]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
Run grand replace for 2015.
[lilypond.git] / lily / parser.yy
index e69f9f55175ccf2133824417cc8bb30586292dbd..8a050f0ef938ee091a29fcb455d62caa90eb0d6f 100644 (file)
@@ -1,8 +1,8 @@
-/* -*- mode: c++; c-file-style: "linux" -*- */
+/* -*- mode: c++; c-file-style: "linux"; indent-tabs-mode: t -*- */
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
                  Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
  * inconsistent state of indentation.
  */
 
-%code requires {
+%{
 
 #define yyerror Lily_parser::parser_error
 
 #define YYLLOC_DEFAULT(Current,Rhs,N) \
        ((Current).set_location ((Rhs)[1], (Rhs)[N]))
 
-#define YYPRINT(file, type, value)                                      \
-        do {                                                            \
-                if (scm_is_eq (value, SCM_UNSPECIFIED))                 \
-                        break;                                          \
-                char *p = scm_to_locale_string                          \
-                        (scm_simple_format (SCM_BOOL_F,                 \
-                                            scm_from_locale_string ("~S"), \
-                                            scm_list_1 (value)));       \
-                fputs (p, file);                                        \
-                free (p);                                               \
-        } while (0)
+#define YYPRINT(file, type, value)                                     \
+       do {                                                            \
+               if (scm_is_eq (value, SCM_UNSPECIFIED))                 \
+                       break;                                          \
+               SCM s = scm_call_2 (ly_lily_module_constant ("value->lily-string"), \
+                                   value,                              \
+                                   parser->self_scm ());               \
+               char *p = scm_to_locale_string (s);                     \
+               fputs (p, file);                                        \
+               free (p);                                               \
+       } while (0)
 
-}
+%}
 
 %parse-param {Lily_parser *parser}
 %parse-param {SCM *retval}
@@ -80,40 +80,24 @@ or
 %nonassoc COMPOSITE
 %left ADDLYRICS
 
- /* ADDLYRICS needs to have lower precedence than argument scanning,
-  * or we won't be able to tell music apart from closed_music without
-  * lookahead in the context of function calls.
-  */
-
-%nonassoc DEFAULT
-
- /* \default is only applied after exhausting function arguments */
-
-%nonassoc FUNCTION_ARGLIST
-
- /* expressions with units are permitted into argument lists */
-
-%right PITCH_IDENTIFIER NOTENAME_PITCH TONICNAME_PITCH
-      UNSIGNED REAL DURATION_IDENTIFIER ':'
+%right ':' UNSIGNED REAL E_UNSIGNED EVENT_IDENTIFIER EVENT_FUNCTION '^' '_'
+       HYPHEN EXTENDER DURATION_IDENTIFIER '!'
 
- /* The above are the symbols that can start optional function arguments
-    that are recognized in the grammar rather than by predicate
+ /* The above are needed for collecting tremoli and other items (that
+    could otherwise be interpreted as belonging to the next function
+    argument) greedily, and together with the next rule will serve to
+    join numbers and units greedily instead of allowing them into
+    separate function arguments
  */
 
-%nonassoc NUMBER_IDENTIFIER '/'
-
- /* Number-unit expressions, where permitted, are concatenated into
-  * function arguments, just like fractions and tremoli.  Tremoli must
-  * not have higher precedence than UNSIGNED, or Lilypond will not
-  * join ':' with a following optional number.
-  */
+%nonassoc NUMBER_IDENTIFIER
 
 %left PREC_TOP
 
 
 
 
-%pure_parser
+%pure-parser
 %locations
 
 
@@ -157,44 +141,50 @@ using namespace std;
 #include "warn.hh"
 
 void
-Lily_parser::parser_error (Input const *i, Lily_parser *parser, SCM *, string s)
+Lily_parser::parser_error (Input const *i, Lily_parser *parser, SCM *, const string &s)
 {
        parser->parser_error (*i, s);
 }
 
+// The following are somewhat precarious constructs as they may change
+// the value of the lookahead token.  That implies that the lookahead
+// token must not yet have made an impact on the state stack other
+// than causing the reduction of the current rule, or switching the
+// lookahead token while Bison is mulling it over will cause trouble.
+
 #define MYBACKUP(Token, Value, Location)                               \
-do                                                                     \
-       if (yychar == YYEMPTY)                                          \
-       {                                                               \
+       do {                                                            \
+               if (yychar != YYEMPTY)                                  \
+                       parser->lexer_->push_extra_token                \
+                               (yylloc, yychar, yylval);               \
                if (Token)                                              \
-                       parser->lexer_->push_extra_token (Token, Value); \
-               parser->lexer_->push_extra_token (BACKUP);              \
-       } else {                                                        \
-               parser->parser_error                                    \
-                       (Location, _("Too much lookahead"));            \
-       }                                                               \
-while (0)
+                       parser->lexer_->push_extra_token                \
+                               (Location, Token, Value);               \
+               parser->lexer_->push_extra_token (Location, BACKUP);    \
+               yychar = YYEMPTY;                                       \
+       } while (0)
 
 
 #define MYREPARSE(Location, Pred, Token, Value)                                \
-do                                                                     \
-       if (yychar == YYEMPTY)                                          \
-       {                                                               \
-               parser->lexer_->push_extra_token (Token, Value);        \
-               parser->lexer_->push_extra_token (REPARSE,              \
-                                                 Pred);                \
-       } else {                                                        \
-               parser->parser_error                                    \
-                       (Location, _("Too much lookahead"));            \
-       }                                                               \
-while (0)
+       do {                                                            \
+               if (yychar != YYEMPTY)                                  \
+                       parser->lexer_->push_extra_token                \
+                               (yylloc, yychar, yylval);               \
+               parser->lexer_->push_extra_token                        \
+                       (Location, Token, Value);                       \
+               parser->lexer_->push_extra_token                        \
+                       (Location, REPARSE, Pred);                      \
+               yychar = YYEMPTY;                                       \
+       } while (0)
 
 %}
 
 
 %{
 
-#define MY_MAKE_MUSIC(x, spot)  make_music_with_input (ly_symbol2scm (x), spot)
+#define MY_MAKE_MUSIC(x, spot) \
+       make_music_with_input (ly_symbol2scm (x), \
+                              parser->lexer_->override_input (spot))
 
 /* ES TODO:
 - Don't use lily module, create a new module instead.
@@ -203,12 +193,12 @@ while (0)
 #define LOWLEVEL_MAKE_SYNTAX(proc, args)       \
   scm_apply_0 (proc, args)
 /* Syntactic Sugar. */
-#define MAKE_SYNTAX(name, location, ...)       \
-  LOWLEVEL_MAKE_SYNTAX (ly_lily_module_constant (name), scm_list_n (parser->self_scm (), make_input (location) , ##__VA_ARGS__, SCM_UNDEFINED))
+#define MAKE_SYNTAX(name, location, ...)                               \
+       LOWLEVEL_MAKE_SYNTAX (ly_lily_module_constant (name), scm_list_n (parser->self_scm (), parser->lexer_->override_input (location).smobbed_copy (), ##__VA_ARGS__, SCM_UNDEFINED))
 #define START_MAKE_SYNTAX(name, ...)                                   \
        scm_list_n (ly_lily_module_constant (name) , ##__VA_ARGS__, SCM_UNDEFINED)
 #define FINISH_MAKE_SYNTAX(start, location, ...)                       \
-       LOWLEVEL_MAKE_SYNTAX (scm_car (start), scm_cons2 (parser->self_scm (), make_input (location), scm_append_x (scm_list_2 (scm_cdr (start), scm_list_n (__VA_ARGS__, SCM_UNDEFINED)))))
+       LOWLEVEL_MAKE_SYNTAX (scm_car (start), scm_cons2 (parser->self_scm (), parser->lexer_->override_input (location).smobbed_copy (), scm_append_x (scm_list_2 (scm_cdr (start), scm_list_n (__VA_ARGS__, SCM_UNDEFINED)))))
 
 SCM get_next_unique_context_id ();
 SCM get_next_unique_lyrics_context_id ();
@@ -224,15 +214,16 @@ SCM get_next_unique_lyrics_context_id ();
 
 static Music *make_music_with_input (SCM name, Input where);
 SCM check_scheme_arg (Lily_parser *parser, Input loc,
-                     SCM arg, SCM args, SCM pred);
+                     SCM arg, SCM args, SCM pred, SCM disp = SCM_UNDEFINED);
+SCM make_music_from_simple (Lily_parser *parser, Input loc, SCM pitch);
 SCM loc_on_music (Input loc, SCM arg);
 SCM make_chord_elements (Input loc, SCM pitch, SCM dur, SCM modification_list);
 SCM make_chord_step (SCM step, Rational alter);
 SCM make_simple_markup (SCM a);
-bool is_duration (int t);
-bool is_regular_identifier (SCM id);
+SCM make_duration (SCM t, int dots = 0);
+bool is_regular_identifier (SCM id, bool multiple=false);
+SCM try_string_variants (SCM pred, SCM str);
 int yylex (YYSTYPE *s, YYLTYPE *loc, Lily_parser *parser);
-void set_music_properties (Music *p, SCM a);
 
 %}
 
@@ -282,6 +273,7 @@ void set_music_properties (Music *p, SCM a);
 %token REST "\\rest"
 %token REVERT "\\revert"
 %token SCORE "\\score"
+%token SCORELINES "\\score-lines"
 %token SEQUENTIAL "\\sequential"
 %token SET "\\set"
 %token SIMULTANEOUS "\\simultaneous"
@@ -306,16 +298,8 @@ void set_music_properties (Music *p, SCM a);
 %token DOUBLE_ANGLE_OPEN "<<"
 %token DOUBLE_ANGLE_CLOSE ">>"
 %token E_BACKSLASH "\\"
-%token E_ANGLE_CLOSE "\\>"
-%token E_CHAR "\\C[haracter]"
-%token E_CLOSE "\\)"
 %token E_EXCLAMATION "\\!"
-%token E_BRACKET_OPEN "\\["
-%token E_OPEN "\\("
-%token E_BRACKET_CLOSE "\\]"
-%token E_ANGLE_OPEN "\\<"
 %token E_PLUS "\\+"
-%token E_TILDE "\\~"
 %token EXTENDER "__"
 
 /*
@@ -326,8 +310,6 @@ If we give names, Bison complains.
 %token FIGURE_SPACE "_"
 %token HYPHEN "--"
 
-%token CHORDMODIFIERS
-%token LYRIC_MARKUP
 %token MULTI_MEASURE_REST
 
 
@@ -336,8 +318,6 @@ If we give names, Bison complains.
 
 /* Artificial tokens, for more generic function syntax */
 %token EXPECT_MARKUP "markup?"
-%token EXPECT_PITCH "ly:pitch?"
-%token EXPECT_DURATION "ly:duration?"
 %token EXPECT_SCM "scheme?"
 %token BACKUP "(backed-up?)"
 %token REPARSE "(reparsed?)"
@@ -350,10 +330,8 @@ If we give names, Bison complains.
 %token EMBEDDED_LILY "#{"
 
 %token BOOK_IDENTIFIER
-%token CHORDMODIFIER_PITCH
 %token CHORD_MODIFIER
 %token CHORD_REPETITION
-%token CONTEXT_DEF_IDENTIFIER
 %token CONTEXT_MOD_IDENTIFIER
 %token DRUM_PITCH
 %token PITCH_IDENTIFIER
@@ -361,9 +339,7 @@ If we give names, Bison complains.
 %token EVENT_IDENTIFIER
 %token EVENT_FUNCTION
 %token FRACTION
-%token LYRICS_STRING
 %token LYRIC_ELEMENT
-%token LYRIC_MARKUP_IDENTIFIER
 %token MARKUP_FUNCTION
 %token MARKUP_LIST_FUNCTION
 %token MARKUP_IDENTIFIER
@@ -372,15 +348,14 @@ If we give names, Bison complains.
 %token MUSIC_IDENTIFIER
 %token NOTENAME_PITCH
 %token NUMBER_IDENTIFIER
-%token OUTPUT_DEF_IDENTIFIER
 %token REAL
 %token RESTNAME
+%token SCM_ARG
 %token SCM_FUNCTION
 %token SCM_IDENTIFIER
 %token SCM_TOKEN
-%token SCORE_IDENTIFIER
 %token STRING
-%token STRING_IDENTIFIER
+%token SYMBOL_LIST
 %token TONICNAME_PITCH
 
 %left '-' '+'
@@ -431,6 +406,13 @@ toplevel_expression:
                SCM proc = parser->lexer_->lookup_identifier ("toplevel-bookpart-handler");
                scm_call_2 (proc, parser->self_scm (), $1);
        }
+       | BOOK_IDENTIFIER {
+               SCM proc = parser->lexer_->lookup_identifier
+                       (Book::unsmob($1)->paper_
+                        ? "toplevel-book-handler"
+                        : "toplevel-bookpart-handler");
+               scm_call_2 (proc, parser->self_scm (), $1);
+       }
        | score_block {
                SCM proc = parser->lexer_->lookup_identifier ("toplevel-score-handler");
                scm_call_2 (proc, parser->self_scm (), $1);
@@ -447,9 +429,42 @@ toplevel_expression:
                SCM proc = parser->lexer_->lookup_identifier ("toplevel-text-handler");
                scm_call_2 (proc, parser->self_scm (), $1);
        }
+       | SCM_TOKEN {
+               // Evaluate and ignore #xxx, as opposed to \xxx
+               parser->lexer_->eval_scm_token ($1, @1);
+       }
+       | embedded_scm_active
+       {
+               SCM out = SCM_UNDEFINED;
+               if (Text_interface::is_markup ($1))
+                       out = scm_list_1 ($1);
+               else if (Text_interface::is_markup_list ($1))
+                       out = $1;
+               if (scm_is_pair (out))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("toplevel-text-handler");
+                       scm_call_2 (proc, parser->self_scm (), out);
+               } else if (Score::is_smob ($1))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("toplevel-score-handler");
+                       scm_call_2 (proc, parser->self_scm (), $1);
+               } else if (Output_def * od = Output_def::unsmob ($1)) {
+                       SCM id = SCM_EOL;
+
+                       if (od->c_variable ("is-paper") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultpaper");
+                       else if (od->c_variable ("is-midi") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultmidi");
+                       else if (od->c_variable ("is-layout") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultlayout");
+
+                       parser->lexer_->set_identifier (id, $1);
+               } else if (!scm_is_eq ($1, SCM_UNSPECIFIED))
+                       parser->parser_error (@1, _("bad expression type"));
+       }
        | output_def {
                SCM id = SCM_EOL;
-               Output_def * od = unsmob_output_def ($1);
+               Output_def * od = Output_def::unsmob ($1);
 
                if (od->c_variable ("is-paper") == SCM_BOOL_T)
                        id = ly_symbol2scm ("$defaultpaper");
@@ -465,16 +480,23 @@ toplevel_expression:
 embedded_scm_bare:
        SCM_TOKEN
        {
-               $$ = parser->lexer_->eval_scm_token ($1);
+               $$ = parser->lexer_->eval_scm_token ($1, @1);
        }
        | SCM_IDENTIFIER
        ;
 
+embedded_scm_active:
+       SCM_IDENTIFIER
+       | scm_function_call
+       ;
+
 embedded_scm_bare_arg:
-       embedded_scm_bare
-       | STRING
-       | STRING_IDENTIFIER
-       | full_markup
+       SCM_ARG
+       | SCM_TOKEN
+       {
+               $$ = parser->lexer_->eval_scm_token ($1, @1);
+       }
+       | FRACTION
        | full_markup_list
        | context_modification
        | score_block
@@ -491,10 +513,19 @@ embedded_scm:
        | scm_function_call
        ;
 
+/* embedded_scm_arg is _not_ casting pitches to music by default, this
+ * has to be done by the function itself.  Note that this may cause
+ * the results of scm_function_call or embedded_scm_bare_arg to be
+ * turned into music from pitches as well.  Note that this creates a
+ * distinctly awkward situation for calculated drum pitches.  Those
+ * are at the current point of time rejected as music constituents as
+ * they can't be distinguished from "proper" symbols.
+ */
+
 embedded_scm_arg:
        embedded_scm_bare_arg
        | scm_function_call
-       | music_arg
+       | music_assign
        ;
 
 scm_function_call:
@@ -504,17 +535,57 @@ scm_function_call:
        }
        ;
 
+embedded_lilypond_number:
+       '-' embedded_lilypond_number
+       {
+               $$ = scm_difference ($2, SCM_UNDEFINED);
+       }
+       | bare_number_common
+       | UNSIGNED NUMBER_IDENTIFIER
+       {
+               $$ = scm_product ($1, $2);
+       }
+       ;
+
 embedded_lilypond:
        /* empty */
        {
+               // FIXME: @$ does not contain a useful source location
+               // for empty rules, and the only token in the whole
+               // production, EMBEDDED_LILY, is synthetic and also
+               // contains no source location.
                $$ = MAKE_SYNTAX ("void-music", @$);
        }
-       | identifier_init
+       | identifier_init_nonumber
+       | embedded_lilypond_number
+       | post_event post_events
+       {
+               $$ = scm_reverse_x ($2, SCM_EOL);
+               if (Music *m = Music::unsmob ($1))
+               {
+                       if (m->is_mus_type ("post-event-wrapper"))
+                               $$ = scm_append
+                                       (scm_list_2 (m->get_property ("elements"),
+                                                    $$));
+                       else
+                               $$ = scm_cons ($1, $$);
+               }
+               if (scm_is_pair ($$)
+                   && scm_is_null (scm_cdr ($$)))
+                       $$ = scm_car ($$);
+               else
+               {
+                       Music * m = MY_MAKE_MUSIC ("PostEvents", @$);
+                       m->set_property ("elements", $$);
+                       $$ = m->unprotect ();
+               }
+       }
+       | multiplied_duration
        | music_embedded music_embedded music_list {
                $3 = scm_reverse_x ($3, SCM_EOL);
-               if (unsmob_music ($2))
+               if (Music::is_smob ($2))
                        $3 = scm_cons ($2, $3);
-               if (unsmob_music ($1))
+               if (Music::is_smob ($1))
                        $3 = scm_cons ($1, $3);
                $$ = MAKE_SYNTAX ("sequential-music", @$, $3);
        }
@@ -533,6 +604,9 @@ lilypond_header_body:
        /* empty */ { $$ = SCM_UNSPECIFIED; }
        | lilypond_header_body assignment  {
 
+       }
+       | lilypond_header_body embedded_scm  {
+
        }
        ;
 
@@ -547,7 +621,6 @@ lilypond_header:
 */
 assignment_id:
        STRING          { $$ = $1; }
-       | LYRICS_STRING { $$ = $1; }
        ;
 
 assignment:
@@ -560,80 +633,131 @@ assignment:
                parser->lexer_->set_identifier (path, $4);
                 $$ = SCM_UNSPECIFIED;
        }
-       | embedded_scm { $$ = SCM_UNSPECIFIED; }
+       | assignment_id '.' property_path '=' identifier_init {
+               SCM path = scm_cons (scm_string_to_symbol ($1), $3);
+               parser->lexer_->set_identifier (path, $5);
+                $$ = SCM_UNSPECIFIED;
+       }
        ;
 
 
 identifier_init:
+       identifier_init_nonumber
+       | number_expression
+       | post_event_nofinger post_events
+       {
+               $$ = scm_reverse_x ($2, SCM_EOL);
+               if (Music *m = Music::unsmob ($1))
+               {
+                       if (m->is_mus_type ("post-event-wrapper"))
+                               $$ = scm_append
+                                       (scm_list_2 (m->get_property ("elements"),
+                                                    $$));
+                       else
+                               $$ = scm_cons ($1, $$);
+               }
+               if (scm_is_pair ($$)
+                   && scm_is_null (scm_cdr ($$)))
+                       $$ = scm_car ($$);
+               else
+               {
+                       Music * m = MY_MAKE_MUSIC ("PostEvents", @$);
+                       m->set_property ("elements", $$);
+                       $$ = m->unprotect ();
+               }
+       }
+       ;
+
+identifier_init_nonumber:
        score_block
        | book_block
        | bookpart_block
        | output_def
        | context_def_spec_block
        | music_assign
-       | post_event_nofinger
-       | number_expression
+       | pitch_or_music
        | FRACTION
        | string
         | embedded_scm
-       | full_markup
        | full_markup_list
         | context_modification
        ;
 
 context_def_spec_block:
        CONTEXT '{' context_def_spec_body '}'
-               {
+       {
                $$ = $3;
+               Context_def *td = Context_def::unsmob ($$);
+               if (!td) {
+                       $$ = Context_def::make_scm ();
+                       td = Context_def::unsmob ($$);
+               }
+               td->origin ()->set_spot (@$);
        }
        ;
 
 context_mod_arg:
        embedded_scm
-       | composite_music
-       ;
-
-context_mod_embedded:
-       context_mod_arg
+       |
        {
-               if (unsmob_music ($1)) {
-                       SCM proc = parser->lexer_->lookup_identifier ("context-mod-music-handler");
-                       $1 = scm_call_2 (proc, parser->self_scm (), $1);
-               }
-               if (unsmob_context_mod ($1))
-                       $$ = $1;
-               else {
-                       parser->parser_error (@1, _ ("not a context mod"));
-               }
+               SCM nn = parser->lexer_->lookup_identifier ("pitchnames");
+               parser->lexer_->push_note_state (nn);
+       }
+       composite_music
+       {
+               parser->lexer_->pop_state ();
+               $$ = $2;
        }
        ;
 
 
 context_def_spec_body:
        /**/ {
-               $$ = Context_def::make_scm ();
-               unsmob_context_def ($$)->origin ()->set_spot (@$);
-       }
-       | CONTEXT_DEF_IDENTIFIER {
-               $$ = $1;
-               unsmob_context_def ($$)->origin ()->set_spot (@$);
+               $$ = SCM_UNSPECIFIED;
        }
        | context_def_spec_body context_mod {
-               unsmob_context_def ($$)->add_context_mod ($2);
+               if (!SCM_UNBNDP ($2)) {
+                       Context_def *td = Context_def::unsmob ($$);
+                       if (!td) {
+                               $$ = Context_def::make_scm ();
+                               td = Context_def::unsmob ($$);
+                       }
+                       Context_def::unsmob ($$)->add_context_mod ($2);
+               }
        }
        | context_def_spec_body context_modification {
-                Context_def *td = unsmob_context_def ($$);
-                SCM new_mods = unsmob_context_mod ($2)->get_mods ();
+                Context_def *td = Context_def::unsmob ($$);
+               if (!td) {
+                       $$ = Context_def::make_scm ();
+                       td = Context_def::unsmob ($$);
+               }
+                SCM new_mods = Context_mod::unsmob ($2)->get_mods ();
                 for (SCM m = new_mods; scm_is_pair (m); m = scm_cdr (m)) {
                     td->add_context_mod (scm_car (m));
                 }
        }
-       | context_def_spec_body context_mod_embedded {
-                Context_def *td = unsmob_context_def ($$);
-                SCM new_mods = unsmob_context_mod ($2)->get_mods ();
-                for (SCM m = new_mods; scm_is_pair (m); m = scm_cdr (m)) {
-                    td->add_context_mod (scm_car (m));
-                }
+       | context_def_spec_body context_mod_arg {
+               Context_def *td = Context_def::unsmob ($1);
+               if (scm_is_eq ($2, SCM_UNSPECIFIED))
+                       ;
+               else if (!td && Context_def::unsmob ($2))
+                       $$ = $2;
+               else {
+                       if (!td) {
+                               $$ = Context_def::make_scm ();
+                               td = Context_def::unsmob ($$);
+                       }
+                       if (Music::is_smob ($2)) {
+                               SCM proc = parser->lexer_->lookup_identifier ("context-mod-music-handler");
+                               $2 = scm_call_2 (proc, parser->self_scm (), $2);
+                       }
+                       if (Context_mod *cm = Context_mod::unsmob ($2)) {
+                               for (SCM m = cm->get_mods (); scm_is_pair (m); m = scm_cdr (m)) {
+                                       td->add_context_mod (scm_car (m));
+                               }
+                       } else
+                               parser->parser_error (@2, _ ("not a context mod"));
+               }
        }
        ;
 
@@ -642,6 +766,7 @@ context_def_spec_body:
 book_block:
        BOOK '{' book_body '}'  {
                $$ = $3;
+               Book::unsmob ($$)->origin ()->set_spot (@$);
                pop_paper (parser);
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-book"), SCM_BOOL_F);
        }
@@ -654,8 +779,7 @@ book_body:
        {
                Book *book = new Book;
                init_papers (parser);
-               book->origin ()->set_spot (@$);
-               book->paper_ = dynamic_cast<Output_def*> (unsmob_output_def (parser->lexer_->lookup_identifier ("$defaultpaper"))->clone ());
+               book->paper_ = dynamic_cast<Output_def*> (Output_def::unsmob (parser->lexer_->lookup_identifier ("$defaultpaper"))->clone ());
                book->paper_->unprotect ();
                push_paper (parser, book->paper_);
                book->header_ = get_header (parser);
@@ -663,12 +787,11 @@ book_body:
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-book"), $$);
        }
        | BOOK_IDENTIFIER {
-               unsmob_book ($1)->origin ()->set_spot (@$);
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-book"), $1);
        }
        | book_body paper_block {
-               unsmob_book ($1)->paper_ = unsmob_output_def ($2);
-               set_paper (parser, unsmob_output_def ($2));
+               Book::unsmob ($1)->paper_ = Output_def::unsmob ($2);
+               set_paper (parser, Output_def::unsmob ($2));
        }
        | book_body bookpart_block {
                SCM proc = parser->lexer_->lookup_identifier ("book-bookpart-handler");
@@ -690,13 +813,45 @@ book_body:
                SCM proc = parser->lexer_->lookup_identifier ("book-text-handler");
                scm_call_2 (proc, $1, $2);
        }
+       | book_body SCM_TOKEN {
+               // Evaluate and ignore #xxx, as opposed to \xxx
+               parser->lexer_->eval_scm_token ($2, @2);
+       }
+       | book_body embedded_scm_active
+       {
+               SCM out = SCM_UNDEFINED;
+               if (Text_interface::is_markup ($2))
+                       out = scm_list_1 ($2);
+               else if (Text_interface::is_markup_list ($2))
+                       out = $2;
+               if (scm_is_pair (out))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("book-text-handler");
+                       scm_call_2 (proc, $1, out);
+               } else if (Score::is_smob ($2))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("book-score-handler");
+                       scm_call_2 (proc, $1, $2);
+               } else if (Output_def *od = Output_def::unsmob ($2)) {
+                       SCM id = SCM_EOL;
+
+                       if (od->c_variable ("is-paper") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultpaper");
+                       else if (od->c_variable ("is-midi") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultmidi");
+                       else if (od->c_variable ("is-layout") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultlayout");
+
+                       parser->lexer_->set_identifier (id, $2);
+               } else if (!scm_is_eq ($2, SCM_UNSPECIFIED))
+                       parser->parser_error (@2, _("bad expression type"));
+       }
        | book_body
        {
-               parser->lexer_->add_scope (unsmob_book ($1)->header_);
+               parser->lexer_->add_scope (Book::unsmob ($1)->header_);
        } lilypond_header
-       | book_body embedded_scm { }
        | book_body error {
-                Book *book = unsmob_book ($1);
+                Book *book = Book::unsmob ($1);
                book->paper_ = 0;
                book->scores_ = SCM_EOL;
                book->bookparts_ = SCM_EOL;
@@ -706,6 +861,7 @@ book_body:
 bookpart_block:
        BOOKPART '{' bookpart_body '}' {
                $$ = $3;
+               Book::unsmob ($$)->origin ()->set_spot (@$);
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-bookpart"), SCM_BOOL_F);
        }
        ;
@@ -713,16 +869,14 @@ bookpart_block:
 bookpart_body:
        {
                Book *book = new Book;
-               book->origin ()->set_spot (@$);
                 $$ = book->unprotect ();
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-bookpart"), $$);
        }
        | BOOK_IDENTIFIER {
-               unsmob_book ($1)->origin ()->set_spot (@$);
                parser->lexer_->set_identifier (ly_symbol2scm ("$current-bookpart"), $1);
        }
        | bookpart_body paper_block {
-               unsmob_book ($$)->paper_ = unsmob_output_def ($2);
+               Book::unsmob ($$)->paper_ = Output_def::unsmob ($2);
        }
        | bookpart_body score_block {
                SCM proc = parser->lexer_->lookup_identifier ("bookpart-score-handler");
@@ -740,16 +894,48 @@ bookpart_body:
                SCM proc = parser->lexer_->lookup_identifier ("bookpart-text-handler");
                scm_call_2 (proc, $1, $2);
        }
+       | bookpart_body SCM_TOKEN {
+               // Evaluate and ignore #xxx, as opposed to \xxx
+               parser->lexer_->eval_scm_token ($2, @2);
+       }
+       | bookpart_body embedded_scm_active
+       {
+               SCM out = SCM_UNDEFINED;
+               if (Text_interface::is_markup ($2))
+                       out = scm_list_1 ($2);
+               else if (Text_interface::is_markup_list ($2))
+                       out = $2;
+               if (scm_is_pair (out))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("bookpart-text-handler");
+                       scm_call_2 (proc, $1, out);
+               } else if (Score::is_smob ($2))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier ("bookpart-score-handler");
+                       scm_call_2 (proc, $1, $2);
+               } else if (Output_def *od = Output_def::unsmob ($2)) {
+                       SCM id = SCM_EOL;
+
+                       if (od->c_variable ("is-paper") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultpaper");
+                       else if (od->c_variable ("is-midi") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultmidi");
+                       else if (od->c_variable ("is-layout") == SCM_BOOL_T)
+                               id = ly_symbol2scm ("$defaultlayout");
+
+                       parser->lexer_->set_identifier (id, $2);
+               } else if (!scm_is_eq ($2, SCM_UNSPECIFIED))
+                       parser->parser_error (@2, _("bad expression type"));
+       }
        | bookpart_body
        {
-                Book *book = unsmob_book ($1);
+                Book *book = Book::unsmob ($1);
                if (!ly_is_module (book->header_))
                        book->header_ = ly_make_module (false);
                parser->lexer_->add_scope (book->header_);
        } lilypond_header
-       | bookpart_body embedded_scm { }
        | bookpart_body error {
-                Book *book = unsmob_book ($1);
+                Book *book = Book::unsmob ($1);
                book->paper_ = 0;
                book->scores_ = SCM_EOL;
        }
@@ -757,41 +943,103 @@ bookpart_body:
 
 score_block:
        SCORE '{' score_body '}'        {
+               Score::unsmob ($3)->origin ()->set_spot (@$);
                $$ = $3;
        }
        ;
 
 score_body:
-       music {
-               SCM scorify = ly_lily_module_constant ("scorify-music");
-               $$ = scm_call_2 (scorify, $1, parser->self_scm ());
-
-               unsmob_score ($$)->origin ()->set_spot (@$);
+       score_items {
+               if (!Score::is_smob ($1)) {
+                       parser->parser_error (@1, _("Missing music in \\score"));
+                       $$ = (new Score)->unprotect ();
+                       if (scm_is_pair ($1) && ly_is_module (scm_car ($1)))
+                       {
+                               Score::unsmob ($$)->set_header (scm_car ($1));
+                               $1 = scm_cdr ($1);
+                       }
+                       for (SCM p = scm_reverse_x ($1, SCM_EOL);
+                            scm_is_pair (p); p = scm_cdr (p))
+                       {
+                               Score::unsmob ($$)->
+                                       add_output_def (Output_def::unsmob (scm_car (p)));
+                       }
+               }
        }
-       | SCORE_IDENTIFIER {
-               unsmob_score ($$)->origin ()->set_spot (@$);
+       | score_body error {
+               Score::unsmob ($$)->error_found_ = true;
        }
-       | score_body
-       {
-                Score *score = unsmob_score ($1);
-               if (!ly_is_module (score->get_header ()))
-                       score->set_header (ly_make_module (false));
-               parser->lexer_->add_scope (score->get_header ());
-       } lilypond_header
-       | score_body output_def {
-                Output_def *od = unsmob_output_def ($2);
-               if (od->lookup_variable (ly_symbol2scm ("is-paper")) == SCM_BOOL_T)
-               {
-                       parser->parser_error (@2, _("\\paper cannot be used in \\score, use \\layout instead"));
+       ;
+
+score_item:
+       embedded_scm
+       | music
+       | output_def
+       ;
 
+score_items:
+       /* empty */
+       {
+               $$ = SCM_EOL;
+       }
+       | score_items score_item
+       {
+               Output_def *od = Output_def::unsmob ($2);
+               if (od) {
+                       if (od->lookup_variable (ly_symbol2scm ("is-paper")) == SCM_BOOL_T)
+                       {
+                               parser->parser_error (@2, _("\\paper cannot be used in \\score, use \\layout instead"));
+                               od = 0;
+                               $2 = SCM_UNSPECIFIED;
+                       }
+               } else if (!Score::is_smob ($$)) {
+                       if (Music::is_smob ($2)) {
+                               SCM scorify = ly_lily_module_constant ("scorify-music");
+                               $2 = scm_call_2 (scorify, $2, parser->self_scm ());
+                       }
+                       if (Score::is_smob ($2))
+                       {
+                               $$ = $2;
+                               $2 = SCM_UNSPECIFIED;
+                       }
                }
-               else
-               {
-                       unsmob_score ($1)->add_output_def (od);
+               Score *score = Score::unsmob ($$);
+               if (score && scm_is_pair ($1)) {
+                       if (ly_is_module (scm_car ($1)))
+                       {
+                               score->set_header (scm_car ($1));
+                               $1 = scm_cdr ($1);
+                       }
+                       for (SCM p = scm_reverse_x ($1, SCM_EOL);
+                            scm_is_pair (p); p = scm_cdr (p))
+                       {
+                               score->add_output_def (Output_def::unsmob (scm_car (p)));
+                       }
                }
+               if (od) {
+                       if (score)
+                               score->add_output_def (od);
+                       else if (scm_is_pair ($$) && ly_is_module (scm_car ($$)))
+                               scm_set_cdr_x ($$, scm_cons ($2, scm_cdr ($$)));
+                       else
+                               $$ = scm_cons ($2, $$);
+               } else if (!scm_is_eq ($2, SCM_UNSPECIFIED))
+                       parser->parser_error (@2, _("Spurious expression in \\score"));
        }
-       | score_body error {
-               unsmob_score ($$)->error_found_ = true;
+       | score_items
+       {
+               if (Score *score = Score::unsmob ($1)) {
+                       if (!ly_is_module (score->get_header ()))
+                               score->set_header (ly_make_module (false));
+                       parser->lexer_->add_scope (score->get_header ());
+               } else {
+                       if (!scm_is_pair ($1) || !ly_is_module (scm_car ($1)))
+                               $1 = scm_cons (ly_make_module (false), $1);
+                       parser->lexer_->add_scope (scm_car ($1));
+               }
+       } lilypond_header
+       {
+               $$ = $1;
        }
        ;
 
@@ -802,7 +1050,7 @@ score_body:
 
 paper_block:
        output_def {
-                Output_def *od = unsmob_output_def ($1);
+                Output_def *od = Output_def::unsmob ($1);
 
                if (od->lookup_variable (ly_symbol2scm ("is-paper")) != SCM_BOOL_T)
                {
@@ -815,7 +1063,8 @@ paper_block:
 
 output_def:
        output_def_body '}' {
-               $$ = $1;
+               if (scm_is_pair ($1))
+                       $$ = scm_car ($1);
 
                parser->lexer_->remove_scope ();
                parser->lexer_->pop_state ();
@@ -855,42 +1104,69 @@ output_def_head_with_mode_switch:
 // is still time to escape from notes mode.
 
 music_or_context_def:
-       music_arg
-       {
-               parser->lexer_->pop_state ();
-       }
-       | CONTEXT
-       {
-               parser->lexer_->pop_state ();
-       } '{' context_def_spec_body '}'
-       {
-               $$ = $4;
-       }
+       music_assign
+       | context_def_spec_block
        ;
 
 output_def_body:
        output_def_head_with_mode_switch '{' {
-               $$ = $1;
-               unsmob_output_def ($$)->input_origin_.set_spot (@$);
-       }
-       | output_def_head_with_mode_switch '{' OUTPUT_DEF_IDENTIFIER    {
-               Output_def *o = unsmob_output_def ($3);
-               o->input_origin_.set_spot (@$);
-               $$ = o->self_scm ();
-               parser->lexer_->remove_scope ();
-               parser->lexer_->add_scope (o->scope_);
+               Output_def::unsmob ($1)->input_origin_.set_spot (@$);
+               // This is a stupid trick to mark the beginning of the
+               // body for deciding whether to allow
+               // embedded_scm_active to have an output definition
+               $$ = scm_list_1 ($1);
        }
        | output_def_body assignment  {
-
+               if (scm_is_pair ($1))
+                       $$ = scm_car ($1);
+       }
+       | output_def_body embedded_scm_active
+       {
+               // We don't switch into note mode for Scheme functions
+               // here.  Does not seem warranted/required in output
+               // definitions.
+               if (scm_is_pair ($1))
+               {
+                       Output_def *o = Output_def::unsmob ($2);
+                       if (o) {
+                               o->input_origin_.set_spot (@$);
+                               $1 = o->self_scm ();
+                               parser->lexer_->remove_scope ();
+                               parser->lexer_->add_scope (o->scope_);
+                               $2 = SCM_UNSPECIFIED;
+                       } else
+                               $1 = scm_car ($1);
+               }
+               if (Context_def::is_smob ($2))
+                       assign_context_def (Output_def::unsmob ($1), $2);
+               // Seems unlikely, but let's be complete:
+               else if (Music::is_smob ($2))
+               {
+                       SCM proc = parser->lexer_->lookup_identifier
+                               ("output-def-music-handler");
+                       scm_call_3 (proc, parser->self_scm (),
+                                   $1, $2);
+               } else if (!scm_is_eq ($2, SCM_UNSPECIFIED))
+                       parser->parser_error (@2, _("bad expression type"));
+               $$ = $1;
+       }
+       | output_def_body SCM_TOKEN {
+               if (scm_is_pair ($1))
+                       $$ = scm_car ($1);
+               // Evaluate and ignore #xxx, as opposed to \xxx
+               parser->lexer_->eval_scm_token ($2, @2);
        }
        | output_def_body
        {
+               if (scm_is_pair ($1))
+                       $1 = scm_car ($1);
                SCM nn = parser->lexer_->lookup_identifier ("pitchnames");
                parser->lexer_->push_note_state (nn);
        } music_or_context_def
        {
-               if (unsmob_context_def ($3))
-                       assign_context_def (unsmob_output_def ($1), $3);
+               parser->lexer_->pop_state ();
+               if (Context_def::is_smob ($3))
+                       assign_context_def (Output_def::unsmob ($1), $3);
                else {
 
                        SCM proc = parser->lexer_->lookup_identifier
@@ -898,6 +1174,7 @@ output_def_body:
                        scm_call_3 (proc, parser->self_scm (),
                                    $1, $3);
                }
+               $$ = $1;
        }
        | output_def_body error {
 
@@ -908,12 +1185,12 @@ tempo_event:
        TEMPO steno_duration '=' tempo_range    {
                $$ = MAKE_SYNTAX ("tempo", @$, SCM_EOL, $2, $4);
        }
-       | TEMPO scalar_closed steno_duration '=' tempo_range    {
+       | TEMPO scalar steno_duration '=' tempo_range   {
                $$ = MAKE_SYNTAX ("tempo", @$, $2, $3, $5);
        }
        | TEMPO scalar {
                $$ = MAKE_SYNTAX ("tempo", @$, $2);
-       }
+       } %prec ':'
        ;
 
 /*
@@ -924,7 +1201,7 @@ music_list:
                $$ = SCM_EOL;
        }
        | music_list music_embedded {
-               if (unsmob_music ($2))
+               if (Music::is_smob ($2))
                        $$ = scm_cons ($2, $1);
        }
        | music_list error {
@@ -943,43 +1220,80 @@ braced_music_list:
        }
        ;
 
-music: music_arg
+music: music_assign
        | lyric_element_music
+       | pitch_as_music
+       ;
+
+pitch_as_music:
+       pitch_or_music
+       {
+               $$ = make_music_from_simple (parser, @1, $1);
+                if (!Music::is_smob ($$))
+               {
+                        parser->parser_error (@1, _ ("music expected"));
+                       $$ = MAKE_SYNTAX ("void-music", @$);
+               }
+       }
        ;
 
 music_embedded:
        music
-       | embedded_scm
        {
-               if (unsmob_music ($1)
-                   || scm_is_eq ($1, SCM_UNSPECIFIED))
-                       $$ = $1;
-               else
-               {
-                       @$.warning (_ ("Ignoring non-music expression"));
+               if (Music::unsmob ($1)->is_mus_type ("post-event")) {
+                       parser->parser_error (@1, _ ("unexpected post-event"));
                        $$ = SCM_UNSPECIFIED;
                }
        }
+       | music_embedded_backup
+       {
+               $$ = $1;
+       }
+       | music_embedded_backup BACKUP lyric_element_music
+       {
+               $$ = $3;
+       }
+       | multiplied_duration post_events
+       {
+               Music *n = MY_MAKE_MUSIC ("NoteEvent", @$);
+
+               parser->default_duration_ = *Duration::unsmob ($1);
+               n->set_property ("duration", $1);
+
+               if (scm_is_pair ($2))
+                       n->set_property ("articulations",
+                                        scm_reverse_x ($2, SCM_EOL));
+               $$ = n->unprotect ();
+       }
        ;
 
-music_arg:
-       simple_music
+music_embedded_backup:
+       embedded_scm
        {
-               if (unsmob_pitch ($1)) {
-                       Music *n = MY_MAKE_MUSIC ("NoteEvent", @1);
-                       n->set_property ("pitch", $1);
-                       n->set_property ("duration",
-                                        parser->default_duration_.smobbed_copy ());
-                       $$ = n->unprotect ();
+               if (scm_is_eq ($1, SCM_UNSPECIFIED))
+                       $$ = $1;
+               else if (Music *m = Music::unsmob ($1)) {
+                       if (m->is_mus_type ("post-event")) {
+                               parser->parser_error
+                                       (@1, _ ("unexpected post-event"));
+                               $$ = SCM_UNSPECIFIED;
+                       } else
+                               $$ = $1;
+               } else if (parser->lexer_->is_lyric_state ()
+                          && Text_interface::is_markup ($1))
+                       MYBACKUP (LYRIC_ELEMENT, $1, @1);
+               else {
+                       @$.warning (_ ("Ignoring non-music expression"));
+                       $$ = $1;
                }
        }
-       | composite_music %prec COMPOSITE
        ;
 
+// music_assign does not need to contain lyrics: there are no
+// assignments in lyricmode.
 music_assign:
        simple_music
        | composite_music %prec COMPOSITE
-       | lyric_element_music
        ;
 
 repeated_music:
@@ -1018,7 +1332,11 @@ simple_music:
        ;
 
 context_modification:
-        WITH { parser->lexer_->push_initial_state (); } '{' context_mod_list '}'
+        WITH
+       {
+               SCM nn = parser->lexer_->lookup_identifier ("pitchnames");
+               parser->lexer_->push_note_state (nn);
+       } '{' context_mod_list '}'
         {
                 parser->lexer_->pop_state ();
                 $$ = $4;
@@ -1031,9 +1349,13 @@ context_modification:
         {
                 $$ = $1;
         }
-       | WITH embedded_scm_closed
+       | WITH context_modification_arg
        {
-               if (unsmob_context_mod ($2))
+               if (Music::is_smob ($2)) {
+                       SCM proc = parser->lexer_->lookup_identifier ("context-mod-music-handler");
+                       $2 = scm_call_2 (proc, parser->self_scm (), $2);
+               }
+               if (Context_mod::is_smob ($2))
                        $$ = $2;
                else {
                        parser->parser_error (@2, _ ("not a context mod"));
@@ -1042,6 +1364,11 @@ context_modification:
        }
         ;
 
+context_modification_arg:
+       embedded_scm
+       | MUSIC_IDENTIFIER
+       ;
+
 optional_context_mod:
         /**/ {
             $$ = SCM_EOL;
@@ -1057,33 +1384,118 @@ context_mod_list:
             $$ = Context_mod ().smobbed_copy ();
         }
         | context_mod_list context_mod  {
-                 unsmob_context_mod ($1)->add_context_mod ($2);
+               if (!SCM_UNBNDP ($2))
+                       Context_mod::unsmob ($1)->add_context_mod ($2);
         }
         | context_mod_list CONTEXT_MOD_IDENTIFIER {
-                 Context_mod *md = unsmob_context_mod ($2);
+                 Context_mod *md = Context_mod::unsmob ($2);
                  if (md)
-                     unsmob_context_mod ($1)->add_context_mods (md->get_mods ());
+                     Context_mod::unsmob ($1)->add_context_mods (md->get_mods ());
         }
-       | context_mod_list context_mod_embedded {
-               unsmob_context_mod ($1)->add_context_mods
-                       (unsmob_context_mod ($2)->get_mods ());
+       | context_mod_list context_mod_arg {
+               if (scm_is_eq ($2, SCM_UNSPECIFIED))
+                       ;
+               else if (Music::is_smob ($2)) {
+                       SCM proc = parser->lexer_->lookup_identifier ("context-mod-music-handler");
+                       $2 = scm_call_2 (proc, parser->self_scm (), $2);
+               }
+               if (Context_mod::is_smob ($2))
+                       Context_mod::unsmob ($$)->add_context_mods
+                               (Context_mod::unsmob ($2)->get_mods ());
+               else {
+                       parser->parser_error (@2, _ ("not a context mod"));
+               }
         }
         ;
 
-composite_music:
-       complex_music
+context_prefix:
+       CONTEXT symbol optional_id optional_context_mod {
+                Context_mod *ctxmod = Context_mod::unsmob ($4);
+                SCM mods = SCM_EOL;
+                if (ctxmod)
+                        mods = ctxmod->get_mods ();
+               $$ = START_MAKE_SYNTAX ("context-specification", $2, $3, mods, SCM_BOOL_F);
+       }
+       | NEWCONTEXT symbol optional_id optional_context_mod {
+                Context_mod *ctxmod = Context_mod::unsmob ($4);
+                SCM mods = SCM_EOL;
+                if (ctxmod)
+                        mods = ctxmod->get_mods ();
+               $$ = START_MAKE_SYNTAX ("context-specification", $2, $3, mods, SCM_BOOL_T);
+       }
+       ;
+
+new_lyrics:
+       ADDLYRICS lyric_mode_music {
+               $$ = scm_list_1 ($2);
+       }
+       | new_lyrics ADDLYRICS lyric_mode_music {
+               $$ = scm_cons ($3, $1);
+       }
+       ;
+
+/* basic_music is basically the same as composite_music but with
+ * context-prefixed music and lyricized music explicitly removed.  The
+ * reason is that in a sequence
+ *
+ *   \new Staff \new Voice { ... } \addlyrics { ... } \addlyrics { ... }
+ *
+ * we need to group both \addlyrics together (as they go with the same
+ * voice) but then combine them with \new Voice { ... }, meaning that
+ * combining \new Voice { ... } needs higher priority than
+ * { ... } \addlyrics, and *not* have \new Staff \new Voice { ... }
+ * combine before combining \new Voice { ... } \addlyrics: only one
+ * layer of context-prefixed music should assemble before \addlyrics
+ * is integrated.  Total mess, and we sort this mess out with explicit
+ * rules preferring a single context-prefix.
+ */
+
+basic_music:
+       music_function_call
+       | repeated_music
        | music_bare
+       | LYRICSTO simple_string lyric_mode_music {
+               $$ = MAKE_SYNTAX ("lyric-combine", @$, $2, SCM_EOL, $3);
+       }
+       | LYRICSTO symbol '=' simple_string lyric_mode_music
+       {
+               $$ = MAKE_SYNTAX ("lyric_combine", @$, $3, $2, $4);
+       }
+       ;
+
+contextable_music:
+       basic_music
+       | pitch_as_music
+       | event_chord
        ;
 
-/* Music that can be parsed without lookahead */
-closed_music:
-       music_bare
-       | complex_music_prefix closed_music
+contexted_basic_music:
+       context_prefix contextable_music new_lyrics
+       {
+               Input i;
+               i.set_location (@1, @2);
+               $$ = FINISH_MAKE_SYNTAX ($1, i, $2);
+               $$ = MAKE_SYNTAX ("add-lyrics", @$, $$, scm_reverse_x ($3, SCM_EOL));
+       } %prec COMPOSITE
+       | context_prefix contextable_music
+       {
+               $$ = FINISH_MAKE_SYNTAX ($1, @$, $2);
+       } %prec COMPOSITE
+       | context_prefix contexted_basic_music
        {
                $$ = FINISH_MAKE_SYNTAX ($1, @$, $2);
        }
        ;
 
+composite_music:
+       basic_music %prec COMPOSITE
+       | contexted_basic_music
+       | basic_music new_lyrics
+       {
+               $$ = MAKE_SYNTAX ("add-lyrics", @$, $1, scm_reverse_x ($2, SCM_EOL));
+       } %prec COMPOSITE
+       ;
+
 music_bare:
        mode_changed_music
        | MUSIC_IDENTIFIER
@@ -1095,43 +1507,104 @@ grouped_music_list:
        | sequential_music              { $$ = $1; }
        ;
 
-/* An argument list. If a function \foo expects scm scm pitch, then the lexer expands \foo into the token sequence:
- MUSIC_FUNCTION EXPECT_PITCH EXPECT_SCM EXPECT_SCM EXPECT_NO_MORE_ARGS
-and this rule returns the reversed list of arguments. */
+/* Function argument lists are arguably the most complex part in the
+ * parser.  They are pretty tricky to understand because of the way
+ * they are processed, and because of optional arguments that can be
+ * omitted.  When there are several optional arguments in a row,
+ * omitting one automatically omits all following arguments.  Optional
+ * arguments can only be omitted when either
+ *
+ * a) the omission is explicitly started with \default
+ * b) the omission is implicitly started by an argument not matching
+ *    its predicate, and there is a mandatory argument later that can
+ *    "catch" the argument that does not fit.
+ *
+ * When argument parsing starts, the lexer pushes EXPECT_SCM tokens
+ * (corresponding to mandatory arguments and having a predicate
+ * function as semantic value) or EXPECT_OPTIONAL EXPECT_SCM (where
+ * the semantic value of the EXPECT_OPTIONAL token is the default to
+ * use when the optional argument is omitted, and EXPECT_SCM again has
+ * the argument predicate as semantic value) in reverse order to the
+ * parser, followed by EXPECT_NO_MORE_ARGS.  The argument list is then
+ * processed inside-out while actual tokens are consumed.
+ *
+ * This means that the argument list tokens determine the actions
+ * taken as they arrive.  The structure of the argument list is known
+ * to the parser and stored in its parse stack when the first argument
+ * is being parsed.  What the parser does not know is which predicates
+ * will match and whether or not \default will be appearing in the
+ * argument list, and where.
+ *
+ * Sequences of 0 or more optional arguments are scanned using either
+ * function_arglist_backup or function_arglist_nonbackup.  The first
+ * is used when optional arguments are followed by at least one
+ * mandatory argument: in that case optional arguments may be skipped
+ * by either a false predicate (in which case the expression will be
+ * pushed back as one or more tokens, preceded by a BACKUP token) or
+ * by using \default.
+ *
+ * If optional arguments are at the end of the argument list, they are
+ * instead scanned using function_arglist_nonbackup: here the only
+ * manner to enter into skipping of optional arguments is the use of
+ * \default.
+ *
+ * The argument list of a normal function call is parsed using
+ * function_arglist.  The part of an argument list before a mandatory
+ * argument is parsed using function_arglist_optional.
+ *
+ * The difference is that leading optional arguments are scanned using
+ * function_arglist_nonbackup and function_arglist_backup,
+ * respectively.
+ *
+ * Most other details are obvious in the rules themselves.
+ *
+ */
 
-function_arglist_skip:
-       function_arglist_common
-       | EXPECT_OPTIONAL EXPECT_PITCH function_arglist_skip
-       {
-               $$ = scm_cons ($1, $3);
-       } %prec FUNCTION_ARGLIST
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_skip
+symbol_list_arg:
+       SYMBOL_LIST
+       | SYMBOL_LIST '.' symbol_list_rev
        {
-               $$ = scm_cons ($1, $3);
-       } %prec FUNCTION_ARGLIST
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip
+               $$ = scm_append (scm_list_2 ($1, scm_reverse_x ($3, SCM_EOL)));
+       }
+       ;
+
+symbol_list_rev:
+       symbol_list_part
+       | symbol_list_rev '.' symbol_list_part
        {
-               $$ = scm_cons ($1, $3);
-       } %prec FUNCTION_ARGLIST
+               $$ = scm_append_x (scm_list_2 ($3, $1));
+       }
        ;
 
+// symbol_list_part delivers elements in reverse copy.
 
-function_arglist_nonbackup_common:
-       EXPECT_OPTIONAL EXPECT_PITCH function_arglist pitch_also_in_chords {
-               $$ = scm_cons ($4, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_closed duration_length {
-               $$ = scm_cons ($4, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed FRACTION
+symbol_list_part:
+       symbol_list_element
        {
-               $$ = check_scheme_arg (parser, @4, $4, $3, $2);
+               SCM sym_l_p = ly_lily_module_constant ("symbol-list?");
+               $$ = try_string_variants (sym_l_p, $1);
+               if (SCM_UNBNDP ($$)) {
+                       parser->parser_error (@1, _("not a symbol"));
+                       $$ = SCM_EOL;
+               } else
+                       $$ = scm_reverse ($$);
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed post_event_nofinger
+       ;
+
+
+symbol_list_element:
+       STRING
+       | embedded_scm_bare
+       ;
+
+
+function_arglist_nonbackup:
+       function_arglist_common
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup post_event_nofinger
        {
                $$ = check_scheme_arg (parser, @4, $4, $3, $2);
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed '-' UNSIGNED
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup '-' UNSIGNED
        {
                SCM n = scm_difference ($5, SCM_UNDEFINED);
                if (scm_is_true (scm_call_1 ($2, n)))
@@ -1139,74 +1612,178 @@ function_arglist_nonbackup_common:
                else {
                        Music *t = MY_MAKE_MUSIC ("FingeringEvent", @5);
                        t->set_property ("digit", $5);
-                       $$ = t->unprotect ();
-                       if (scm_is_true (scm_call_1 ($2, $$)))
-                               $$ = scm_cons ($$, $3);
-                       else
-                               $$ = check_scheme_arg (parser, @4, n, $3, $2);
+                       $$ = check_scheme_arg (parser, @4, t->unprotect (),
+                                              $3, $2, n);
                }
-               
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed '-' REAL
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup '-' REAL
        {
                $$ = check_scheme_arg (parser, @4,
                                       scm_difference ($5, SCM_UNDEFINED),
                                       $3, $2);
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed '-' NUMBER_IDENTIFIER
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup '-' NUMBER_IDENTIFIER
        {
                $$ = check_scheme_arg (parser, @4,
                                       scm_difference ($5, SCM_UNDEFINED),
                                       $3, $2);
        }
-       ;
-
-function_arglist_closed_nonbackup:
-       function_arglist_nonbackup_common
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist embedded_scm_arg_closed
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup embedded_scm_arg
        {
-               $$ = check_scheme_arg (parser, @4, $4, $3, $2);
+               if (scm_is_true (scm_call_1 ($2, $4)))
+                       $$ = scm_cons ($4, $3);
+               else
+                       $$ = check_scheme_arg (parser, @4,
+                                              make_music_from_simple
+                                              (parser, @4, $4),
+                                              $3, $2);
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed bare_number_closed
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup bare_number_common
        {
                $$ = check_scheme_arg (parser, @4, $4, $3, $2);
        }
-       ;
-
-function_arglist_nonbackup:
-       function_arglist_nonbackup_common
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist embedded_scm_arg
+       | function_arglist_nonbackup_reparse REPARSE pitch_or_music
        {
-               $$ = check_scheme_arg (parser, @4, $4, $3, $2);
+               if (scm_is_true (scm_call_1 ($2, $3)))
+                       $$ = scm_cons ($3, $1);
+               else
+                       $$ = check_scheme_arg (parser, @3,
+                                              make_music_from_simple
+                                              (parser, @3, $3),
+                                              $1, $2);
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed bare_number
+       | function_arglist_nonbackup_reparse REPARSE duration_length
        {
-               $$ = check_scheme_arg (parser, @4, $4, $3, $2);
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
+       }
+       | function_arglist_nonbackup_reparse REPARSE bare_number_common
+       {
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
+       }
+       | function_arglist_nonbackup_reparse REPARSE SCM_ARG
+       {
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
+       }
+       | function_arglist_nonbackup_reparse REPARSE lyric_element_music
+       {
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
+       }
+       | function_arglist_nonbackup_reparse REPARSE symbol_list_arg
+       {
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
        }
        ;
 
-function_arglist_keep:
-       function_arglist_common
-       | function_arglist_backup
+function_arglist_nonbackup_reparse:
+       EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup SCM_IDENTIFIER
+       {
+               $$ = $3;
+               SCM res = try_string_variants ($2, $4);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res))
+                               MYREPARSE (@4, $2, SYMBOL_LIST, res);
+                       else
+                               MYREPARSE (@4, $2, SCM_ARG, res);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($2, make_music_from_simple
+                          (parser, @4, $4))))
+                       MYREPARSE (@4, $2, STRING, $4);
+               else
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup pitch
+       {
+               $$ = $3;
+               if (scm_is_true
+                   (scm_call_1
+                    ($2, make_music_from_simple
+                     (parser, @4, $4))))
+                       MYREPARSE (@4, $2, PITCH_IDENTIFIER, $4);
+               else
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup steno_tonic_pitch
+       {
+               $$ = $3;
+               if (scm_is_true
+                   (scm_call_1
+                    ($2, make_music_from_simple
+                     (parser, @4, $4))))
+                       MYREPARSE (@4, $2, TONICNAME_PITCH, $4);
+               else
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup STRING
+       {
+               $$ = $3;
+               SCM res = try_string_variants ($2, $4);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res))
+                               MYREPARSE (@4, $2, SYMBOL_LIST, res);
+                       else
+                               MYREPARSE (@4, $2, SCM_ARG, res);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($2, make_music_from_simple
+                          (parser, @4, $4))))
+                       MYREPARSE (@4, $2, STRING, $4);
+               else
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup full_markup
+       {
+               $$ = $3;
+               if (scm_is_true (scm_call_1 ($2, $4)))
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($2, make_music_from_simple
+                          (parser, @4, $4))))
+                       MYREPARSE (@4, $2, STRING, $4);
+               else
+                       MYREPARSE (@4, $2, SCM_ARG, $4);
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup UNSIGNED
+       {
+               $$ = $3;
+               if (scm_is_true (scm_call_1 ($2, $4)))
+                       MYREPARSE (@4, $2, REAL, $4);
+               else {
+                       SCM d = make_duration ($4);
+                       if (SCM_UNBNDP (d) || scm_is_false (scm_call_1 ($2, d)))
+                               MYREPARSE (@4, $2, REAL, $4); // trigger error
+                       else
+                               MYREPARSE (@4, $2, DURATION_IDENTIFIER, d);
+               }
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_nonbackup DURATION_IDENTIFIER {
+               $$ = $3;
+               MYREPARSE (@4, $2, DURATION_IDENTIFIER, $4);
+       }
        ;
 
-function_arglist_closed_keep:
-       function_arglist_closed_common
-       | function_arglist_backup
-       ;
 
+// function_arglist_backup can't occur at the end of an argument
+// list.
 function_arglist_backup:
-       EXPECT_OPTIONAL EXPECT_SCM function_arglist_keep embedded_scm_arg_closed
+       function_arglist_common
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup embedded_scm_arg
        {
                if (scm_is_true (scm_call_1 ($2, $4)))
-               {
                        $$ = scm_cons ($4, $3);
-               } else {
-                       $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (SCM_IDENTIFIER, $4, @4);
+               else {
+                       $$ = make_music_from_simple (parser, @4, $4);
+                       if (scm_is_true (scm_call_1 ($2, $$)))
+                               $$ = scm_cons ($$, $3);
+                       else
+                       {
+                               $$ = scm_cons (loc_on_music (@3, $1), $3);
+                               MYBACKUP (SCM_ARG, $4, @4);
+                       }
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep post_event_nofinger
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup post_event_nofinger
        {
                if (scm_is_true (scm_call_1 ($2, $4)))
                {
@@ -1216,66 +1793,87 @@ function_arglist_backup:
                        MYBACKUP (EVENT_IDENTIFIER, $4, @4);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_keep lyric_element
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup pitch
        {
-               // There is no point interpreting a lyrics string as
-               // an event, since we don't allow music possibly
-               // followed by durations or postevent into closed
-               // music, and we only accept closed music in optional
-               // arguments at the moment.  If this changes, more
-               // complex schemes might become interesting here as
-               // well: see how we do this at the mandatory argument
-               // point.
-               if (scm_is_true (scm_call_1 ($2, $4)))
+               if (scm_is_true
+                   (scm_call_1
+                    ($2, make_music_from_simple
+                     (parser, @4, $4))))
+               {
+                       $$ = $3;
+                       MYREPARSE (@4, $2, PITCH_IDENTIFIER, $4);
+               } else if (scm_is_true (scm_call_1 ($2, $4)))
                        $$ = scm_cons ($4, $3);
                else {
                        $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (LYRICS_STRING, $4, @4);
+                       MYBACKUP (PITCH_IDENTIFIER, $4, @4);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep UNSIGNED
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup steno_tonic_pitch
        {
-               if (scm_is_true (scm_call_1 ($2, $4)))
+               if (scm_is_true
+                   (scm_call_1
+                    ($2, make_music_from_simple
+                     (parser, @4, $4))))
                {
                        $$ = $3;
-                       MYREPARSE (@4, $2, UNSIGNED, $4);
-               } else {
+                       MYREPARSE (@4, $2, TONICNAME_PITCH, $4);
+               } else if (scm_is_true (scm_call_1 ($2, $4)))
+                       $$ = scm_cons ($4, $3);
+               else {
                        $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (UNSIGNED, $4, @4);
+                       MYBACKUP (TONICNAME_PITCH, $4, @4);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep REAL
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup full_markup
+       {
+               if (scm_is_true (scm_call_1 ($2, $4)))
+                       $$ = scm_cons ($4, $3);
+               else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
+                       MYBACKUP (SCM_IDENTIFIER, $4, @4);
+               }
+       }
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup UNSIGNED
        {
                if (scm_is_true (scm_call_1 ($2, $4)))
                {
-                       $$ = $3;
                        MYREPARSE (@4, $2, REAL, $4);
+                       $$ = $3;
                } else {
-                       $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (REAL, $4, @4);
+                       SCM d = make_duration ($4);
+                       if (SCM_UNBNDP (d) || scm_is_false (scm_call_1 ($2, d)))
+                       {
+                               $$ = scm_cons (loc_on_music (@3, $1), $3);
+                               MYBACKUP (UNSIGNED, $4, @4);
+                       } else {
+                               MYREPARSE (@4, $2, DURATION_IDENTIFIER, d);
+                               $$ = $3;
+                       }
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep NUMBER_IDENTIFIER
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup REAL
        {
                if (scm_is_true (scm_call_1 ($2, $4)))
                {
-                       $$ = scm_cons ($4, $3);
+                       $$ = $3;
+                       MYREPARSE (@4, $2, REAL, $4);
                } else {
                        $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (NUMBER_IDENTIFIER, $4, @4);
+                       MYBACKUP (REAL, $4, @4);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep FRACTION
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup NUMBER_IDENTIFIER
        {
                if (scm_is_true (scm_call_1 ($2, $4)))
                {
                        $$ = scm_cons ($4, $3);
                } else {
                        $$ = scm_cons (loc_on_music (@3, $1), $3);
-                       MYBACKUP (FRACTION, $4, @4);
+                       MYBACKUP (NUMBER_IDENTIFIER, $4, @4);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep '-' UNSIGNED
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup '-' UNSIGNED
        {
                SCM n = scm_difference ($5, SCM_UNDEFINED);
                if (scm_is_true (scm_call_1 ($2, n))) {
@@ -1290,285 +1888,308 @@ function_arglist_backup:
                        else {
                                $$ = scm_cons (loc_on_music (@3, $1), $3);
                                MYBACKUP (UNSIGNED, $5, @5);
-                               parser->lexer_->push_extra_token ('-');
+                               parser->lexer_->push_extra_token (@4, '-');
                        }
                }
-               
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep '-' REAL
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup '-' REAL
        {
                SCM n = scm_difference ($5, SCM_UNDEFINED);
                if (scm_is_true (scm_call_1 ($2, n))) {
                        MYREPARSE (@5, $2, REAL, n);
                        $$ = $3;
                } else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
                        MYBACKUP (REAL, n, @5);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_closed_keep '-' NUMBER_IDENTIFIER
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup '-' NUMBER_IDENTIFIER
        {
                SCM n = scm_difference ($5, SCM_UNDEFINED);
                if (scm_is_true (scm_call_1 ($2, n))) {
                        $$ = scm_cons (n, $3);
                } else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
                        MYBACKUP (NUMBER_IDENTIFIER, n, @5);
                }
        }
-       | EXPECT_OPTIONAL EXPECT_PITCH function_arglist_keep pitch_also_in_chords
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup DURATION_IDENTIFIER
        {
-               $$ = scm_cons ($4, $3);
+               if (scm_is_true (scm_call_1 ($2, $4)))
+               {
+                       MYREPARSE (@4, $2, DURATION_IDENTIFIER, $4);
+                       $$ = $3;
+               } else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
+                       MYBACKUP (DURATION_IDENTIFIER, $4, @4);
+               }
        }
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_closed_keep duration_length
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup SCM_IDENTIFIER
        {
-               $$ = scm_cons ($4, $3);
+               SCM res = try_string_variants ($2, $4);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res)) {
+                               $$ = $3;
+                               MYREPARSE (@4, $2, SYMBOL_LIST, res);
+                       }
+                       else
+                               $$ = scm_cons (res, $3);
+               else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
+                       MYBACKUP (SCM_IDENTIFIER, $4, @4);
+               }
        }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup BACKUP
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_backup STRING
        {
-               $$ = scm_cons ($1, $3);
-               MYBACKUP(0, SCM_UNDEFINED, @3);
+               SCM res = try_string_variants ($2, $4);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res)) {
+                               $$ = $3;
+                               MYREPARSE (@4, $2, SYMBOL_LIST, res);
+                       }
+                       else
+                               $$ = scm_cons (res, $3);
+               else {
+                       $$ = scm_cons (loc_on_music (@3, $1), $3);
+                       MYBACKUP (STRING, $4, @4);
+               }
        }
-       | function_arglist_backup REPARSE embedded_scm_arg_closed
+       | function_arglist_backup REPARSE pitch_or_music
+       {
+               if (scm_is_true (scm_call_1 ($2, $3)))
+                       $$ = scm_cons ($3, $1);
+               else
+                       $$ = check_scheme_arg (parser, @3,
+                                              make_music_from_simple
+                                              (parser, @3, $3),
+                                              $1, $2);
+       }
+       | function_arglist_backup REPARSE bare_number_common
        {
                $$ = check_scheme_arg (parser, @3,
                                       $3, $1, $2);
        }
-       | function_arglist_backup REPARSE bare_number
+       | function_arglist_backup REPARSE duration_length
        {
                $$ = check_scheme_arg (parser, @3,
                                       $3, $1, $2);
        }
+       | function_arglist_backup REPARSE symbol_list_arg
+       {
+               $$ = check_scheme_arg (parser, @3, $3, $1, $2);
+       }
        ;
 
 function_arglist:
-       function_arglist_common
-       | function_arglist_nonbackup
+       function_arglist_nonbackup
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip_nonbackup DEFAULT
+       {
+               $$ = scm_cons (loc_on_music (@4, $1), $3);
+       }
+       ;
+
+function_arglist_skip_nonbackup:
+       function_arglist_nonbackup
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip_nonbackup
+       {
+               $$ = scm_cons (loc_on_music (@3, $1), $3);
+       }
        ;
 
 function_arglist_common:
-       function_arglist_bare
+       EXPECT_NO_MORE_ARGS {
+               $$ = SCM_EOL;
+       }
        | EXPECT_SCM function_arglist_optional embedded_scm_arg
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               if (scm_is_true (scm_call_1 ($1, $3)))
+                       $$ = scm_cons ($3, $2);
+               else
+                       $$ = check_scheme_arg (parser, @3,
+                                              make_music_from_simple
+                                              (parser, @3, $3),
+                                              $2, $1);
        }
-       | EXPECT_SCM function_arglist_closed_optional bare_number
+       | EXPECT_SCM function_arglist_optional bare_number_common
        {
                $$ = check_scheme_arg (parser, @3,
                                       $3, $2, $1);
        }
-       | EXPECT_SCM function_arglist_closed_optional FRACTION
+       | EXPECT_SCM function_arglist_optional post_event_nofinger
        {
                $$ = check_scheme_arg (parser, @3,
                                       $3, $2, $1);
        }
-       | EXPECT_SCM function_arglist_closed_optional post_event_nofinger
+       | EXPECT_SCM function_arglist_optional '-' NUMBER_IDENTIFIER
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               SCM n = scm_difference ($4, SCM_UNDEFINED);
+               $$ = check_scheme_arg (parser, @4, n, $2, $1);
        }
-       | function_arglist_common_minus
-       | function_arglist_common_lyric
-       ;
-
-function_arglist_common_lyric:
-       EXPECT_SCM function_arglist_optional lyric_element
+       | function_arglist_common_reparse REPARSE SCM_ARG
        {
-               // We check how the predicate thinks about a lyrics
-               // event or about a markup.  If it accepts neither, we
-               // backup the original token.  Otherwise we commit to
-               // taking the token.  Depending on what the predicate
-               // is willing to accept, we interpret as a string, as
-               // a lyric event, or ambiguously (meaning that if
-               // something looking like a duration or post event
-               // follows, we take the event, otherwise the string).
-               SCM lyric_event = MAKE_SYNTAX ("lyric-event", @3, $3,
-                                              parser->default_duration_.smobbed_copy ());
-               if (scm_is_true (scm_call_1 ($1, $3)))
-                       if (scm_is_true (scm_call_1 ($1, lyric_event)))
-                       {
-                               $$ = $2;
-                               MYREPARSE (@3, $1, LYRICS_STRING, $3);
-                       } else {
-                               $$ = scm_cons ($3, $2);
-                       }
-               else if (scm_is_true (scm_call_1 ($1, lyric_event)))
-               {
-                       $$ = $2;
-                       MYREPARSE (@3, $1, LYRIC_ELEMENT, $3);
-               } else {
-                       // This is going to flag a syntax error, we
-                       // know the predicate to be false.
-                       check_scheme_arg (parser, @3,
-                                         $3, $2, $1);
-               }
+               $$ = check_scheme_arg (parser, @3,
+                                      $3, $1, $2);
        }
-       | function_arglist_common_lyric REPARSE lyric_element_arg
+       | function_arglist_common_reparse REPARSE lyric_element_music
        {
-               // This should never be false
                $$ = check_scheme_arg (parser, @3,
                                       $3, $1, $2);
        }
-       ;
-
-function_arglist_common_minus:
-       EXPECT_SCM function_arglist_closed_optional '-' UNSIGNED
+       | function_arglist_common_reparse REPARSE pitch_or_music
        {
-               SCM n = scm_difference ($4, SCM_UNDEFINED);
-               if (scm_is_true (scm_call_1 ($1, n))) {
-                       $$ = $2;
-                       MYREPARSE (@4, $1, REAL, n);
-               } else {
-                       Music *t = MY_MAKE_MUSIC ("FingeringEvent", @4);
-                       t->set_property ("digit", $4);
-                       $$ = t->unprotect ();
-                       if (scm_is_true (scm_call_1 ($1, $$)))
-                               $$ = scm_cons ($$, $2);
-                       else
-                               $$ = check_scheme_arg (parser, @3, n, $2, $1);
-               }
-               
+               if (scm_is_true (scm_call_1 ($2, $3)))
+                       $$ = scm_cons ($3, $1);
+               else
+                       $$ = check_scheme_arg (parser, @3,
+                                              make_music_from_simple
+                                              (parser, @3, $3),
+                                              $1, $2);
        }
-       | EXPECT_SCM function_arglist_closed_optional '-' REAL
+       | function_arglist_common_reparse REPARSE bare_number_common
        {
-               $$ = $2;
-               SCM n = scm_difference ($4, SCM_UNDEFINED);
-               MYREPARSE (@4, $1, REAL, n);
+               $$ = check_scheme_arg (parser, @3,
+                                      $3, $1, $2);
        }
-       | EXPECT_SCM function_arglist_closed_optional '-' NUMBER_IDENTIFIER
+       | function_arglist_common_reparse REPARSE duration_length
        {
-               SCM n = scm_difference ($4, SCM_UNDEFINED);
-               $$ = check_scheme_arg (parser, @4, n, $2, $1);
+               $$ = check_scheme_arg (parser, @3,
+                                      $3, $1, $2);
        }
-       | function_arglist_common_minus REPARSE bare_number
+       | function_arglist_common_reparse REPARSE symbol_list_arg
        {
                $$ = check_scheme_arg (parser, @3, $3, $1, $2);
        }
        ;
 
-function_arglist_closed:
-       function_arglist_closed_common
-       | function_arglist_closed_nonbackup
-       ;
-
-function_arglist_closed_common:
-       function_arglist_bare
-       | EXPECT_SCM function_arglist_optional embedded_scm_arg_closed
+function_arglist_common_reparse:
+       EXPECT_SCM function_arglist_optional SCM_IDENTIFIER
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               $$ = $2;
+               SCM res = try_string_variants ($1, $3);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res))
+                               MYREPARSE (@3, $1, SYMBOL_LIST, res);
+                       else
+                               MYREPARSE (@3, $1, SCM_ARG, res);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($1, make_music_from_simple (parser, @3, $3))))
+                       MYREPARSE (@3, $1, LYRIC_ELEMENT, $3);
+               else
+                       // This is going to flag a syntax error, we
+                       // know the predicate to be false.
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
        }
-       | EXPECT_SCM function_arglist_closed_optional bare_number
+       | EXPECT_SCM function_arglist_optional pitch
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               $$ = $2;
+               if (scm_is_true
+                   (scm_call_1
+                    ($1, make_music_from_simple
+                     (parser, @3, $3))))
+                       MYREPARSE (@3, $1, PITCH_IDENTIFIER, $3);
+               else
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
        }
-       | EXPECT_SCM function_arglist_closed_optional '-' UNSIGNED
+       | EXPECT_SCM function_arglist_optional steno_tonic_pitch
        {
-               SCM n = scm_difference ($4, SCM_UNDEFINED);
-               if (scm_is_true (scm_call_1 ($1, n))) {
-                       $$ = scm_cons (n, $2);
-               } else {
-                       Music *t = MY_MAKE_MUSIC ("FingeringEvent", @4);
-                       t->set_property ("digit", $4);
-                       $$ = t->unprotect ();
-                       if (scm_is_true (scm_call_1 ($1, $$)))
-                               $$ = scm_cons ($$, $2);
+               $$ = $2;
+               if (scm_is_true
+                   (scm_call_1
+                    ($1, make_music_from_simple
+                     (parser, @3, $3))))
+                       MYREPARSE (@3, $1, TONICNAME_PITCH, $3);
+               else
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
+       }
+       | EXPECT_SCM function_arglist_optional STRING
+       {
+               $$ = $2;
+               SCM res = try_string_variants ($1, $3);
+               if (!SCM_UNBNDP (res))
+                       if (scm_is_pair (res))
+                               MYREPARSE (@3, $1, SYMBOL_LIST, res);
                        else
-                               $$ = check_scheme_arg (parser, @3, n, $2, $1);
-               }
-               
+                               MYREPARSE (@3, $1, SCM_ARG, res);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($1, make_music_from_simple (parser, @3, $3))))
+                       MYREPARSE (@3, $1, LYRIC_ELEMENT, $3);
+               else
+                       // This is going to flag a syntax error, we
+                       // know the predicate to be false.
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
        }
-       | EXPECT_SCM function_arglist_closed_optional '-' REAL
+       | EXPECT_SCM function_arglist_optional full_markup
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      scm_difference ($4, SCM_UNDEFINED),
-                                      $2, $1);
+               $$ = $2;
+               if (scm_is_true (scm_call_1 ($1, $3)))
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
+               else if (scm_is_true
+                        (scm_call_1
+                         ($1, make_music_from_simple (parser, @3, $3))))
+                       MYREPARSE (@3, $1, LYRIC_ELEMENT, $3);
+               else
+                       // This is going to flag a syntax error, we
+                       // know the predicate to be false.
+                       MYREPARSE (@3, $1, SCM_ARG, $3);
        }
-       | EXPECT_SCM function_arglist_closed_optional '-' NUMBER_IDENTIFIER
+       | EXPECT_SCM function_arglist_optional UNSIGNED
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      scm_difference ($4, SCM_UNDEFINED),
-                                      $2, $1);
+               $$ = $2;
+               if (scm_is_true (scm_call_1 ($1, $3)))
+                       MYREPARSE (@3, $1, REAL, $3);
+               else {
+                       SCM d = make_duration ($3);
+                       if (SCM_UNBNDP (d) || scm_is_false (scm_call_1 ($1, d)))
+                               MYREPARSE (@3, $1, REAL, $3);
+                       else
+                               MYREPARSE (@3, $1, DURATION_IDENTIFIER, d);
+               }
        }
-       | EXPECT_SCM function_arglist_closed_optional post_event_nofinger
+       | EXPECT_SCM function_arglist_optional DURATION_IDENTIFIER
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               $$ = $2;
+               MYREPARSE (@3, $1, DURATION_IDENTIFIER, $3);
        }
-       | EXPECT_SCM function_arglist_closed_optional FRACTION
+       | EXPECT_SCM function_arglist_optional '-' UNSIGNED
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               $$ = $2;
+               SCM n = scm_difference ($4, SCM_UNDEFINED);
+               if (scm_is_true (scm_call_1 ($1, n)))
+                       MYREPARSE (@4, $1, REAL, n);
+               else {
+                       Music *t = MY_MAKE_MUSIC ("FingeringEvent", @4);
+                       t->set_property ("digit", $4);
+                       SCM m = t->unprotect ();
+                       if (scm_is_true (scm_call_1 ($1, m)))
+                               MYREPARSE (@4, $1, SCM_ARG, m);
+                       else
+                               MYREPARSE (@4, $1, SCM_ARG, $4);
+               }
        }
-       | EXPECT_SCM function_arglist_optional lyric_element
+       | EXPECT_SCM function_arglist_optional '-' REAL
        {
-               $$ = check_scheme_arg (parser, @3,
-                                      $3, $2, $1);
+               $$ = $2;
+               SCM n = scm_difference ($4, SCM_UNDEFINED);
+               MYREPARSE (@4, $1, REAL, n);
        }
        ;
 
 function_arglist_optional:
-       function_arglist_keep %prec FUNCTION_ARGLIST
-       | function_arglist_backup BACKUP
-       | EXPECT_OPTIONAL EXPECT_PITCH function_arglist_optional
+       function_arglist_backup
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip_backup DEFAULT
        {
-               $$ = scm_cons ($1, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_optional
-       {
-               $$ = scm_cons ($1, $3);
+               $$ = scm_cons (loc_on_music (@4, $1), $3);
        }
+       | function_arglist_skip_backup BACKUP
        ;
 
-function_arglist_closed_optional:
-       function_arglist_closed_keep %prec FUNCTION_ARGLIST
-       | function_arglist_backup BACKUP
-       | EXPECT_OPTIONAL EXPECT_PITCH function_arglist_closed_optional
+function_arglist_skip_backup:
+       function_arglist_backup
+       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip_backup
        {
-               $$ = scm_cons ($1, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_closed_optional
-       {
-               $$ = scm_cons ($1, $3);
-       }
-       ;
-
-embedded_scm_closed:
-       embedded_scm_bare
-       | scm_function_call_closed
-       ;
-
-embedded_scm_arg_closed:
-       embedded_scm_bare_arg
-       | scm_function_call_closed
-       | closed_music
-       ;
-
-scm_function_call_closed:
-       SCM_FUNCTION function_arglist_closed {
-               $$ = MAKE_SYNTAX ("music-function", @$,
-                                        $1, $2);
-       } %prec FUNCTION_ARGLIST
-       ;
-
-function_arglist_bare:
-       EXPECT_NO_MORE_ARGS {
-               $$ = SCM_EOL;
-       }
-       | EXPECT_PITCH function_arglist_optional pitch_also_in_chords {
-               $$ = scm_cons ($3, $2);
-       }
-       | EXPECT_DURATION function_arglist_closed_optional duration_length {
-               $$ = scm_cons ($3, $2);
-       }
-       | EXPECT_OPTIONAL EXPECT_PITCH function_arglist_skip DEFAULT {
-               $$ = scm_cons ($1, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_DURATION function_arglist_skip DEFAULT {
-               $$ = scm_cons ($1, $3);
-       }
-       | EXPECT_OPTIONAL EXPECT_SCM function_arglist_skip DEFAULT {
-               $$ = scm_cons ($1, $3);
+               $$ = scm_cons (loc_on_music (@3, $1), $3);
        }
        ;
 
@@ -1587,31 +2208,21 @@ optional_id:
        }
        ;
 
-complex_music:
-       music_function_call
-       | repeated_music                { $$ = $1; }
-       | re_rhythmed_music     { $$ = $1; }
-       | complex_music_prefix music
-       {
-               $$ = FINISH_MAKE_SYNTAX ($1, @$, $2);
-       }
-       ;
+// We must not have lookahead tokens parsed in lyric mode.  In order
+// to save confusion, we take almost the same set as permitted with
+// \lyricmode and/or \lyrics.  However, music identifiers are also
+// allowed, and they obviously do not require switching into lyrics
+// mode for parsing.
 
-complex_music_prefix:
-       CONTEXT simple_string optional_id optional_context_mod {
-                Context_mod *ctxmod = unsmob_context_mod ($4);
-                SCM mods = SCM_EOL;
-                if (ctxmod)
-                        mods = ctxmod->get_mods ();
-               $$ = START_MAKE_SYNTAX ("context-specification", $2, $3, mods, SCM_BOOL_F);
-       }
-       | NEWCONTEXT simple_string optional_id optional_context_mod {
-                Context_mod *ctxmod = unsmob_context_mod ($4);
-                SCM mods = SCM_EOL;
-                if (ctxmod)
-                        mods = ctxmod->get_mods ();
-               $$ = START_MAKE_SYNTAX ("context-specification", $2, $3, mods, SCM_BOOL_T);
+lyric_mode_music:
+       {
+               parser->lexer_->push_lyric_state ();
+       } grouped_music_list
+       {
+               parser->lexer_->pop_state ();
+               $$ = $2;
        }
+       | MUSIC_IDENTIFIER
        ;
 
 mode_changed_music:
@@ -1627,7 +2238,7 @@ mode_changed_music:
                parser->lexer_->pop_state ();
        }
        | mode_changing_head_with_context optional_context_mod grouped_music_list {
-                Context_mod *ctxmod = unsmob_context_mod ($2);
+                Context_mod *ctxmod = Context_mod::unsmob ($2);
                 SCM mods = SCM_EOL;
                 if (ctxmod)
                         mods = ctxmod->get_mods ();
@@ -1698,75 +2309,96 @@ mode_changing_head_with_context:
        }
        ;
 
-new_lyrics:
-       ADDLYRICS { parser->lexer_->push_lyric_state (); }
-       /*cont */
-       composite_music {
-       /* Can also use music at the expensive of two S/Rs similar to
-           \repeat \alternative */
-               parser->lexer_->pop_state ();
-
-               $$ = scm_cons ($3, SCM_EOL);
-       }
-       | new_lyrics ADDLYRICS {
-               parser->lexer_->push_lyric_state ();
-       } composite_music {
-               parser->lexer_->pop_state ();
-               $$ = scm_cons ($4, $1);
+context_change:
+       CHANGE symbol '=' simple_string  {
+               $$ = MAKE_SYNTAX ("context-change", @$, $2, $4);
        }
        ;
 
-re_rhythmed_music:
-       composite_music new_lyrics {
-               $$ = MAKE_SYNTAX ("add-lyrics", @$, $1, scm_reverse_x ($2, SCM_EOL));
-       } %prec COMPOSITE
-       | LYRICSTO simple_string {
-               parser->lexer_->push_lyric_state ();
-       } music {
-               parser->lexer_->pop_state ();
-               $$ = MAKE_SYNTAX ("lyric-combine", @$, $2, $4);
-       }
-       ;
 
-context_change:
-       CHANGE STRING '=' STRING  {
-               $$ = MAKE_SYNTAX ("context-change", @$, scm_string_to_symbol ($2), $4);
+property_path:
+       symbol_list_rev  {
+               $$ = scm_reverse_x ($1, SCM_EOL);
+       }
+       | symbol_list_rev property_path {
+               $$ = scm_reverse_x ($1, $2);
        }
        ;
 
-
-property_path_revved:
-       embedded_scm_closed {
-               $$ = scm_cons ($1, SCM_EOL);
+property_operation:
+       symbol '=' scalar {
+               $$ = scm_list_3 (ly_symbol2scm ("assign"), $1, $3);
        }
-       | property_path_revved embedded_scm_closed {
-               $$ = scm_cons ($2, $1);
+       | UNSET symbol {
+               $$ = scm_list_2 (ly_symbol2scm ("unset"), $2);
+       }
+       | OVERRIDE property_path '=' scalar {
+               if (scm_ilength ($2) < 2) {
+                       parser->parser_error (@2, _("bad grob property path"));
+                       $$ = SCM_UNDEFINED;
+               } else {
+                       $$ = scm_cons (ly_symbol2scm ("push"),
+                                      scm_cons2 (scm_car ($2),
+                                                 $4,
+                                                 scm_cdr ($2)));
+               }
+       }
+       | REVERT revert_arg {
+               $$ = scm_cons (ly_symbol2scm ("pop"), $2);
+       }
+       ;
+
+// This is all quite awkward for the sake of substantial backward
+// compatibility while at the same time allowing a more "natural" form
+// of specification not separating grob specification from grob
+// property path.  The purpose of this definition of revert_arg is to
+// allow the symbol list which specifies grob and property to revert
+// to be optionally be split into two parts after the grob (which in
+// this case is just the first element of the list).  symbol_list_part
+// is only one path component, but it can be parsed without lookahead,
+// so we can follow it with a synthetic BACKUP token when needed.  If
+// the first symbol_list_part already contains multiple elements (only
+// possible if a Scheme expression provides them), we just parse for
+// additional elements introduced by '.', which is what the
+// SYMBOL_LIST backup in connection with the immediately following
+// rule using symbol_list_arg does.
+//
+// As long as we don't have our coffers filled with both grob and at
+// least one grob property specification, the rest of the required
+// symbol list chain may be provided either with or without a leading
+// dot.  This is for both allowing the traditional
+// \revert Accidental #'color
+// as well as well as the "naive" form
+// \revert Accidental.color
+
+revert_arg:
+       revert_arg_backup BACKUP symbol_list_arg
+       {
+               $$ = $3;
        }
        ;
 
-property_path:
-       property_path_revved  {
-               $$ = scm_reverse_x ($1, SCM_EOL);
+revert_arg_backup:
+       revert_arg_part
+       {
+               if (scm_is_null ($1)
+                   || scm_is_null (scm_cdr ($1)))
+                       MYBACKUP (SCM_ARG, $1, @1);
+               else
+                       MYBACKUP (SYMBOL_LIST, scm_reverse_x ($1, SCM_EOL), @1);
        }
        ;
 
-property_operation:
-       STRING '=' scalar {
-               $$ = scm_list_3 (ly_symbol2scm ("assign"),
-                       scm_string_to_symbol ($1), $3);
-       }
-       | UNSET simple_string {
-               $$ = scm_list_2 (ly_symbol2scm ("unset"),
-                       scm_string_to_symbol ($2));
-       }
-       | OVERRIDE simple_string property_path '=' scalar {
-               $$ = scm_append (scm_list_2 (scm_list_3 (ly_symbol2scm ("push"),
-                                                       scm_string_to_symbol ($2), $5),
-                                            $3));
+// revert_arg_part delivers results in reverse
+revert_arg_part:
+       symbol_list_part
+       | revert_arg_backup BACKUP SCM_ARG '.' symbol_list_part
+       {
+               $$ = scm_append_x (scm_list_2 ($5, $3));
        }
-       | REVERT simple_string embedded_scm {
-               $$ = scm_list_3 (ly_symbol2scm ("pop"),
-                       scm_string_to_symbol ($2), $3);
+       | revert_arg_backup BACKUP SCM_ARG symbol_list_part
+       {
+               $$ = scm_append_x (scm_list_2 ($4, $3));
        }
        ;
 
@@ -1805,52 +2437,141 @@ context_mod:
        }
        ;
 
-context_prop_spec:
-       simple_string {
-               if (!is_regular_identifier ($1))
+// If defined, at least two members.
+grob_prop_spec:
+       symbol_list_rev
+       {
+               SCM l = scm_reverse_x ($1, SCM_EOL);
+               if (scm_is_pair (l)
+                   && to_boolean
+                   (scm_object_property (scm_car (l),
+                                         ly_symbol2scm ("is-grob?"))))
+                       l = scm_cons (ly_symbol2scm ("Bottom"), l);
+               if (scm_is_null (l) || scm_is_null (scm_cdr (l))) {
+                       parser->parser_error (@1, _ ("bad grob property path"));
+                       l = SCM_UNDEFINED;
+               }
+               $$ = l;
+       }
+       ;
+
+// If defined, at least three members
+grob_prop_path:
+       grob_prop_spec
+       {
+               if (!SCM_UNBNDP ($1) && scm_is_null (scm_cddr ($1)))
                {
-                       @$.error (_("Grob name should be alphanumeric"));
+                       parser->parser_error (@1, _ ("bad grob property path"));
+                       $$ = SCM_UNDEFINED;
+               }
+       }
+       | grob_prop_spec property_path
+       {
+               if (!SCM_UNBNDP ($1)) {
+                       $$ = scm_append_x (scm_list_2 ($1, $2));
+                       if (scm_is_null (scm_cddr ($$))) {
+                               parser->parser_error (@$, _ ("bad grob property path"));
+                               $$ = SCM_UNDEFINED;
+                       }
                }
 
-               $$ = scm_list_2 (ly_symbol2scm ("Bottom"),
-                       scm_string_to_symbol ($1));
        }
-       | simple_string '.' simple_string {
-               $$ = scm_list_2 (scm_string_to_symbol ($1),
-                       scm_string_to_symbol ($3));
+       ;
+
+// Exactly two elements or undefined
+context_prop_spec:
+       symbol_list_rev
+       {
+               SCM l = scm_reverse_x ($1, SCM_EOL);
+               switch (scm_ilength (l)) {
+               case 1:
+                       l = scm_cons (ly_symbol2scm ("Bottom"), l);
+               case 2:
+                       break;
+               default:
+                       parser->parser_error (@1, _ ("bad context property path"));
+                       l = SCM_UNDEFINED;
+               }
+               $$ = l;
        }
        ;
 
 simple_music_property_def:
-       OVERRIDE context_prop_spec property_path '=' scalar {
-               $$ = scm_append (scm_list_2 (scm_list_n (scm_car ($2),
-                               ly_symbol2scm ("OverrideProperty"),
-                               scm_cadr ($2),
-                               $5, SCM_UNDEFINED),
-                               $3));
-       }
-       | REVERT context_prop_spec embedded_scm {
-               $$ = scm_list_4 (scm_car ($2),
-                       ly_symbol2scm ("RevertProperty"),
-                       scm_cadr ($2),
-                       $3);
+       OVERRIDE grob_prop_path '=' scalar {
+               if (SCM_UNBNDP ($2))
+                       $$ = SCM_UNDEFINED;
+               else {
+                       $$ = scm_list_5 (scm_car ($2),
+                                        ly_symbol2scm ("OverrideProperty"),
+                                        scm_cadr ($2),
+                                        $4,
+                                        scm_cddr ($2));
+               }
+       }
+       | REVERT simple_revert_context revert_arg {
+               $$ = scm_list_4 ($2,
+                                ly_symbol2scm ("RevertProperty"),
+                                scm_car ($3),
+                                scm_cdr ($3));
        }
        | SET context_prop_spec '=' scalar {
-               $$ = scm_list_4 (scm_car ($2),
-                       ly_symbol2scm ("PropertySet"),
-                       scm_cadr ($2),
-                       $4);
+               if (SCM_UNBNDP ($2))
+                       $$ = SCM_UNDEFINED;
+               else
+                       $$ = scm_list_4 (scm_car ($2),
+                                        ly_symbol2scm ("PropertySet"),
+                                        scm_cadr ($2),
+                                        $4);
        }
        | UNSET context_prop_spec {
-               $$ = scm_list_3 (scm_car ($2),
-                       ly_symbol2scm ("PropertyUnset"),
-                       scm_cadr ($2));
+               if (SCM_UNBNDP ($2))
+                       $$ = SCM_UNDEFINED;
+               else
+                       $$ = scm_list_3 (scm_car ($2),
+                                        ly_symbol2scm ("PropertyUnset"),
+                                        scm_cadr ($2));
+       }
+       ;
+
+
+// This is all quite awkward for the sake of substantial backward
+// compatibility while at the same time allowing a more "natural" form
+// of specification not separating grob specification from grob
+// property path.  The purpose of this definition of
+// simple_revert_context is to allow the symbol list which specifies
+// grob and property to revert to be optionally be split into two
+// parts after the grob (which may be preceded by a context
+// specification, a case which we distinguish by checking whether the
+// first symbol is a valid grob symbol instead).
+//
+// See revert_arg above for the main work horse of this arrangement.
+// simple_revert_context just caters for the context and delegates the
+// rest of the job to revert_arg.
+
+simple_revert_context:
+       symbol_list_part
+       {
+               $1 = scm_reverse_x ($1, SCM_EOL);
+               if (scm_is_null ($1)
+                   || to_boolean
+                   (scm_object_property (scm_car ($1),
+                                         ly_symbol2scm ("is-grob?")))) {
+                       $$ = ly_symbol2scm ("Bottom");
+                       parser->lexer_->push_extra_token (@1, SCM_IDENTIFIER, $1);
+               } else {
+                       $$ = scm_car ($1);
+                       parser->lexer_->push_extra_token (@1, SCM_IDENTIFIER,
+                                                         scm_cdr ($1));
+               }
        }
        ;
 
 music_property_def:
        simple_music_property_def {
-               $$ = LOWLEVEL_MAKE_SYNTAX (ly_lily_module_constant ("property-operation"), scm_cons2 (parser->self_scm (), make_input (@$), $1));
+               if (SCM_UNBNDP ($1))
+                       $$ = MAKE_SYNTAX ("void-music", @1);
+               else
+                       $$ = LOWLEVEL_MAKE_SYNTAX (ly_lily_module_constant ("property-operation"), scm_cons2 (parser->self_scm (), @$.smobbed_copy (), $1));
        }
        ;
 
@@ -1858,77 +2579,83 @@ string:
        STRING {
                $$ = $1;
        }
-       | STRING_IDENTIFIER {
-               $$ = $1;
-       }
-       | string '+' string {
-               $$ = scm_string_append (scm_list_2 ($1, $3));
-       }
+       | full_markup
        ;
 
 simple_string: STRING {
                $$ = $1;
        }
-       | LYRICS_STRING {
-               $$ = $1;
+       | embedded_scm_bare
+       {
+               if (scm_is_string ($1)) {
+                       $$ = $1;
+               } else {
+                       parser->parser_error (@1, (_ ("simple string expected")));
+                       $$ = scm_string (SCM_EOL);
+               }
        }
-       | STRING_IDENTIFIER {
-               $$ = $1;
+       ;
+
+symbol:
+       STRING {
+               $$ = scm_string_to_symbol ($1);
+       }
+       | embedded_scm_bare
+       {
+               // This is a bit of overkill but makes the same
+               // routine responsible for all symbol interpretations.
+               $$ = try_string_variants (ly_lily_module_constant ("symbol?"),
+                                         $1);
+               if (SCM_UNBNDP ($$))
+               {
+                       parser->parser_error (@1, (_ ("symbol expected")));
+                       // Generate a unique symbol in case it is used
+                       // for an assignment or similar
+                       $$ = scm_make_symbol (ly_string2scm ("undefined"));
+               }
        }
        ;
 
 scalar:
        embedded_scm_arg
+       | pitch_or_music
+       | SCM_IDENTIFIER
        | bare_number
-       | FRACTION
-       | lyric_element
-       ;
-
-scalar_closed:
-       embedded_scm_arg_closed
-       | bare_number
-       | FRACTION
-       | lyric_element
+       // The following is a rather defensive variant of admitting
+       // negative numbers: the grammar would permit number_factor or
+       // even number_expression.  However, function arguments allow
+       // only this simple kind of negative number, so to have things
+       // like \tweak and \override behave reasonably similar, it
+       // makes sense to rule out things like -- which are rather an
+       // accent in function argument contexts.
+       | '-' bare_number
+       {
+               $$ = scm_difference ($2, SCM_UNDEFINED);
+       }
+       | string
        ;
 
-
 event_chord:
        simple_element post_events {
                // Let the rhythmic music iterator sort this mess out.
                if (scm_is_pair ($2)) {
-                       if (unsmob_pitch ($1)) {
-                               Music *n = MY_MAKE_MUSIC ("NoteEvent", @1);
-                               n->set_property ("pitch", $1);
-                               n->set_property ("duration",
-                                                parser->default_duration_.smobbed_copy ());
-                               $$ = n->unprotect ();
-                       }
-                       unsmob_music ($$)->set_property ("articulations",
+                       Music::unsmob ($$)->set_property ("articulations",
                                                         scm_reverse_x ($2, SCM_EOL));
                }
-       }
-       | simple_chord_elements post_events     {
-               SCM elts = ly_append2 ($1, scm_reverse_x ($2, SCM_EOL));
-
-               Input i;
-               /* why is this giving wrong start location? -ns
-                * i = @$; */
-               i.set_location (@1, @2);
-               $$ = MAKE_SYNTAX ("event-chord", i, elts);
-       }
+       } %prec ':'
        | CHORD_REPETITION optional_notemode_duration post_events {
                Input i;
                i.set_location (@1, @3);
                $$ = MAKE_SYNTAX ("repetition-chord", i,
                                  $2, scm_reverse_x ($3, SCM_EOL));
-       }
+       } %prec ':'
        | MULTI_MEASURE_REST optional_notemode_duration post_events {
                Input i;
                i.set_location (@1, @3);
                $$ = MAKE_SYNTAX ("multi-measure-rest", i, $2,
                                  scm_reverse_x ($3, SCM_EOL));
-       }
-       | command_element
+       } %prec ':'
+       | tempo_event
        | note_chord_element
        ;
 
@@ -1936,19 +2663,19 @@ event_chord:
 note_chord_element:
        chord_body optional_notemode_duration post_events
        {
-               Music *m = unsmob_music ($1);
-               SCM dur = unsmob_duration ($2)->smobbed_copy ();
+               Music *m = Music::unsmob ($1);
+               SCM dur = Duration::unsmob ($2)->smobbed_copy ();
                SCM es = m->get_property ("elements");
                SCM postevs = scm_reverse_x ($3, SCM_EOL);
 
                for (SCM s = es; scm_is_pair (s); s = scm_cdr (s))
-                 unsmob_music (scm_car (s))->set_property ("duration", dur);
+                 Music::unsmob (scm_car (s))->set_property ("duration", dur);
                es = ly_append2 (es, postevs);
 
                m-> set_property ("elements", es);
                m->set_spot (@$);
                $$ = m->self_scm ();
-       }
+       } %prec ':'
        ;
 
 chord_body:
@@ -1956,6 +2683,10 @@ chord_body:
        {
                $$ = MAKE_SYNTAX ("event-chord", @$, scm_reverse_x ($2, SCM_EOL));
        }
+       | FIGURE_OPEN figure_list FIGURE_CLOSE
+       {
+               $$ = MAKE_SYNTAX ("event-chord", @$, scm_reverse_x ($2, SCM_EOL));
+       }
        ;
 
 chord_body_elements:
@@ -1967,7 +2698,7 @@ chord_body_elements:
        ;
 
 chord_body_element:
-       pitch exclamations questions octave_check post_events
+       pitch_or_tonic_pitch exclamations questions octave_check post_events
        {
                bool q = to_boolean ($3);
                bool ex = to_boolean ($2);
@@ -2005,11 +2736,11 @@ chord_body_element:
        }
        | music_function_chord_body
        {
-               Music *m = unsmob_music ($1);
+               Music *m = Music::unsmob ($1);
 
                while (m && m->is_mus_type ("music-wrapper-music")) {
                        $$ = m->get_property ("element");
-                       m = unsmob_music ($$);
+                       m = Music::unsmob ($$);
                }
 
                if (!(m && m->is_mus_type ("rhythmic-event"))) {
@@ -2022,77 +2753,37 @@ chord_body_element:
 music_function_chord_body:
        music_function_call
        | MUSIC_IDENTIFIER
-       ;
-
-// Event functions may only take closed arglists, otherwise it would
-// not be clear whether a following postevent should be associated
-// with the last argument of the event function or with the expression
-// for which the function call acts itself as event.
-
-music_function_event:
-       MUSIC_FUNCTION function_arglist_closed {
-               $$ = MAKE_SYNTAX ("music-function", @$,
-                                        $1, $2);
-       }
+       | embedded_scm
        ;
 
 event_function_event:
-       EVENT_FUNCTION function_arglist_closed {
+       EVENT_FUNCTION function_arglist {
                $$ = MAKE_SYNTAX ("music-function", @$,
                                         $1, $2);
        }
        ;
 
-command_element:
-       command_event {
-               $$ = $1;
-       }
-       | E_BRACKET_OPEN {
-               Music *m = MY_MAKE_MUSIC ("LigatureEvent", @$);
-               m->set_property ("span-direction", scm_from_int (START));
-               $$ = m->unprotect();
-       }
-       | E_BRACKET_CLOSE {
-               Music *m = MY_MAKE_MUSIC ("LigatureEvent", @$);
-               m->set_property ("span-direction", scm_from_int (STOP));
-               $$ = m->unprotect ();
-       }
-       | E_BACKSLASH {
-               $$ = MAKE_SYNTAX ("voice-separator", @$);
-       }
-       | '|'      {
-               SCM pipe = parser->lexer_->lookup_identifier ("pipeSymbol");
-
-               Music *m = unsmob_music (pipe);
-               if (m)
-               {
-                       m = m->clone ();
-                       m->set_spot (@$);
-                       $$ = m->unprotect ();
-               }
-               else
-                       $$ = MAKE_SYNTAX ("bar-check", @$);
-
-       }
-       ;
-
-command_event:
-       E_TILDE {
-               $$ = MY_MAKE_MUSIC ("PesOrFlexaEvent", @$)->unprotect ();
-       }
-       | tempo_event {
-               $$ = $1;
-       }
-       ;
-
-
 post_events:
        /* empty */ {
                $$ = SCM_EOL;
        }
        | post_events post_event {
-               unsmob_music ($2)->set_spot (@2);
-               $$ = scm_cons ($2, $$);
+               $$ = $1;
+               if (Music *m = Music::unsmob ($2))
+               {
+                       if (m->is_mus_type ("post-event-wrapper"))
+                       {
+                               for (SCM p = m->get_property ("elements");
+                                    scm_is_pair (p);
+                                    p = scm_cdr (p))
+                               {
+                                       $$ = scm_cons (scm_car (p), $$);
+                               }
+                       } else {
+                               m->set_spot (@2);
+                               $$ = scm_cons ($2, $$);
+                       }
+               }
        }
        ;
 
@@ -2100,11 +2791,14 @@ post_event_nofinger:
        direction_less_event {
                $$ = $1;
        }
-       | script_dir music_function_event {
+       | script_dir music_function_call {
                $$ = $2;
-               if (!SCM_UNBNDP ($1))
+               if (!Music::unsmob ($2)->is_mus_type ("post-event")) {
+                       parser->parser_error (@2, _ ("post-event expected"));
+                       $$ = SCM_UNSPECIFIED;
+               } else if (!SCM_UNBNDP ($1))
                {
-                       unsmob_music ($$)->set_property ("direction", $1);
+                       Music::unsmob ($$)->set_property ("direction", $1);
                }
        }
        | HYPHEN {
@@ -2120,7 +2814,7 @@ post_event_nofinger:
        | script_dir direction_reqd_event {
                if (!SCM_UNBNDP ($1))
                {
-                       Music *m = unsmob_music ($2);
+                       Music *m = Music::unsmob ($2);
                        m->set_property ("direction", $1);
                }
                $$ = $2;
@@ -2128,7 +2822,7 @@ post_event_nofinger:
        | script_dir direction_less_event {
                if (!SCM_UNBNDP ($1))
                {
-                       Music *m = unsmob_music ($2);
+                       Music *m = Music::unsmob ($2);
                        m->set_property ("direction", $1);
                }
                $$ = $2;
@@ -2136,13 +2830,13 @@ post_event_nofinger:
        | '^' fingering
        {
                $$ = $2;
-               unsmob_music ($$)->set_property ("direction", scm_from_int (UP));
+               Music::unsmob ($$)->set_property ("direction", scm_from_int (UP));
        }
        | '_' fingering
        {
                $$ = $2;
-               unsmob_music ($$)->set_property ("direction", scm_from_int (DOWN));
-       }                       
+               Music::unsmob ($$)->set_property ("direction", scm_from_int (DOWN));
+       }
        ;
 
 post_event:
@@ -2160,55 +2854,8 @@ string_number_event:
        }
        ;
 
-direction_less_char:
-       '['  {
-               $$ = ly_symbol2scm ("bracketOpenSymbol");
-       }
-       | ']'  {
-               $$ = ly_symbol2scm ("bracketCloseSymbol");
-       }
-       | '~'  {
-               $$ = ly_symbol2scm ("tildeSymbol");
-       }
-       | '('  {
-               $$ = ly_symbol2scm ("parenthesisOpenSymbol");
-       }
-       | ')'  {
-               $$ = ly_symbol2scm ("parenthesisCloseSymbol");
-       }
-       | E_EXCLAMATION  {
-               $$ = ly_symbol2scm ("escapedExclamationSymbol");
-       }
-       | E_OPEN  {
-               $$ = ly_symbol2scm ("escapedParenthesisOpenSymbol");
-       }
-       | E_CLOSE  {
-               $$ = ly_symbol2scm ("escapedParenthesisCloseSymbol");
-       }
-       | E_ANGLE_CLOSE  {
-               $$ = ly_symbol2scm ("escapedBiggerSymbol");
-       }
-       | E_ANGLE_OPEN  {
-               $$ = ly_symbol2scm ("escapedSmallerSymbol");
-       }
-       ;
-
 direction_less_event:
-       direction_less_char {
-               SCM predefd = parser->lexer_->lookup_identifier_symbol ($1);
-               Music *m = 0;
-               if (unsmob_music (predefd))
-               {
-                       m = unsmob_music (predefd)->clone ();
-                       m->set_spot (@$);
-               }
-               else
-               {
-                       m = MY_MAKE_MUSIC ("Music", @$);
-               }
-               $$ = m->unprotect ();
-       }
-       | string_number_event
+       string_number_event
        | EVENT_IDENTIFIER      {
                $$ = $1;
        }
@@ -2217,7 +2864,7 @@ direction_less_event:
                a->set_property ("tremolo-type", $1);
                $$ = a->unprotect ();
         }
-       | event_function_event  
+       | event_function_event
        ;
 
 direction_reqd_event:
@@ -2226,11 +2873,21 @@ direction_reqd_event:
        }
        | script_abbreviation {
                SCM s = parser->lexer_->lookup_identifier ("dash" + ly_scm2string ($1));
-               Music *a = MY_MAKE_MUSIC ("ArticulationEvent", @$);
-               if (scm_is_string (s))
+               if (scm_is_string (s)) {
+                       Music *a = MY_MAKE_MUSIC ("ArticulationEvent", @$);
                        a->set_property ("articulation-type", s);
-               else parser->parser_error (@1, _ ("expecting string as script definition"));
-               $$ = a->unprotect ();
+                       $$ = a->unprotect ();
+               } else {
+                       Music *original = Music::unsmob (s);
+                       if (original && original->is_mus_type ("post-event")) {
+                               Music *a = original->clone ();
+                               a->set_spot (parser->lexer_->override_input (@$));
+                               $$ = a->unprotect ();
+                       } else {
+                               parser->parser_error (@1, _ ("expecting string or post-event as script definition"));
+                               $$ = MY_MAKE_MUSIC ("PostEvents", @$)->unprotect ();
+                       }
+               }
        }
        ;
 
@@ -2270,8 +2927,8 @@ steno_pitch:
        NOTENAME_PITCH quotes {
                 if (!scm_is_eq (SCM_INUM0, $2))
                 {
-                        Pitch p = *unsmob_pitch ($1);
-                        p = p.transposed (Pitch (scm_to_int ($2),0,0));
+                        Pitch p = *Pitch::unsmob ($1);
+                        p = p.transposed (Pitch (scm_to_int ($2), 0));
                         $$ = p.smobbed_copy ();
                 }
        }
@@ -2285,8 +2942,8 @@ steno_tonic_pitch:
        TONICNAME_PITCH quotes {
                 if (!scm_is_eq (SCM_INUM0, $2))
                 {
-                        Pitch p = *unsmob_pitch ($1);
-                        p = p.transposed (Pitch (scm_to_int ($2),0,0));
+                        Pitch p = *Pitch::unsmob ($1);
+                        p = p.transposed (Pitch (scm_to_int ($2), 0));
                         $$ = p.smobbed_copy ();
                 }
        }
@@ -2294,10 +2951,17 @@ steno_tonic_pitch:
 
 pitch:
        steno_pitch
-       | PITCH_IDENTIFIER
+       | PITCH_IDENTIFIER quotes {
+                if (!scm_is_eq (SCM_INUM0, $2))
+                {
+                        Pitch p = *Pitch::unsmob ($1);
+                        p = p.transposed (Pitch (scm_to_int ($2), 0));
+                        $$ = p.smobbed_copy ();
+                }
+       }
        ;
 
-pitch_also_in_chords:
+pitch_or_tonic_pitch:
        pitch
        | steno_tonic_pitch
        ;
@@ -2308,12 +2972,24 @@ gen_text_def:
                t->set_property ("text", $1);
                $$ = t->unprotect ();
        }
-       | simple_string {
+       | STRING {
                Music *t = MY_MAKE_MUSIC ("TextScriptEvent", @$);
                t->set_property ("text",
                        make_simple_markup ($1));
                $$ = t->unprotect ();
        }
+       | embedded_scm
+       {
+               Music *m = Music::unsmob ($1);
+               if (m && m->is_mus_type ("post-event"))
+                       $$ = $1;
+               else if (Text_interface::is_markup ($1)) {
+                       Music *t = MY_MAKE_MUSIC ("TextScriptEvent", @$);
+                       t->set_property ("text", $1);
+                       $$ = t->unprotect ();
+               } else
+                       parser->parser_error (@1, _ ("not an articulation"));
+       }
        ;
 
 fingering:
@@ -2334,8 +3010,8 @@ script_abbreviation:
        | '-'           {
                $$ = scm_from_locale_string ("Dash");
        }
-       | '|'           {
-               $$ = scm_from_locale_string ("Bar");
+       | '!'           {
+               $$ = scm_from_locale_string ("Bang");
        }
        | ANGLE_CLOSE   {
                $$ = scm_from_locale_string ("Larger");
@@ -2363,10 +3039,10 @@ duration_length:
 maybe_notemode_duration:
        {
                $$ = SCM_UNDEFINED;
-       }
+       } %prec ':'
        | multiplied_duration   {
                $$ = $1;
-               parser->default_duration_ = *unsmob_duration ($$);
+               parser->default_duration_ = *Duration::unsmob ($$);
        }
 ;
 
@@ -2381,17 +3057,15 @@ optional_notemode_duration:
 
 steno_duration:
        UNSIGNED dots           {
-               int len = 0;
-                int n = scm_to_int ($1);
-               if (!is_duration (n))
-                       parser->parser_error (@1, _f ("not a duration: %d", n));
-               else
-                       len = intlog2 (n);
-
-               $$ = Duration (len, scm_to_int ($2)).smobbed_copy ();
+               $$ = make_duration ($1, scm_to_int ($2));
+               if (SCM_UNBNDP ($$))
+               {
+                       parser->parser_error (@1, _ ("not a duration"));
+                       $$ = Duration ().smobbed_copy ();
+               }
        }
        | DURATION_IDENTIFIER dots      {
-               Duration *d = unsmob_duration ($1);
+               Duration *d = Duration::unsmob ($1);
                Duration k (d->duration_log (),
                             d->dot_count () + scm_to_int ($2));
                k = k.compressed (d->factor ());
@@ -2405,12 +3079,12 @@ multiplied_duration:
                $$ = $1;
        }
        | multiplied_duration '*' UNSIGNED {
-               $$ = unsmob_duration ($$)->compressed (scm_to_int ($3)).smobbed_copy ();
+               $$ = Duration::unsmob ($$)->compressed (scm_to_int ($3)).smobbed_copy ();
        }
        | multiplied_duration '*' FRACTION {
                Rational  m (scm_to_int (scm_car ($3)), scm_to_int (scm_cdr ($3)));
 
-               $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
+               $$ = Duration::unsmob ($$)->compressed (m).smobbed_copy ();
        }
        ;
 
@@ -2425,13 +3099,16 @@ dots:
 
 tremolo_type:
        ':'     {
-               $$ = SCM_INUM0;
+               $$ = scm_from_int (parser->default_tremolo_type_);
        }
        | ':' UNSIGNED {
-                int n = scm_to_int ($2);
-               if (!is_duration (n))
-                       parser->parser_error (@2, _f ("not a duration: %d", n));
-               $$ = $2;
+               if (SCM_UNBNDP (make_duration ($2))) {
+                       parser->parser_error (@2, _ ("not a duration"));
+                       $$ = scm_from_int (parser->default_tremolo_type_);
+               } else {
+                       $$ = $2;
+                       parser->default_tremolo_type_ = scm_to_int ($2);
+               }
        }
        ;
 
@@ -2439,6 +3116,18 @@ bass_number:
        UNSIGNED { $$ = $1; }
        | STRING { $$ = $1; }
        | full_markup { $$ = $1; }
+       | embedded_scm_bare
+       {
+               // as an integer, it needs to be non-negative, and otherwise
+               // it needs to be suitable as a markup.
+               if (scm_is_integer ($1)
+                   ? scm_is_true (scm_negative_p ($1))
+                   : !Text_interface::is_markup ($1))
+               {
+                       parser->parser_error (@1, _ ("bass number expected"));
+                       $$ = SCM_INUM0;
+               }
+       }
        ;
 
 figured_bass_alteration:
@@ -2465,10 +3154,10 @@ bass_figure:
        }
        | bass_figure ']' {
                $$ = $1;
-               unsmob_music ($1)->set_property ("bracket-stop", SCM_BOOL_T);
+               Music::unsmob ($1)->set_property ("bracket-stop", SCM_BOOL_T);
        }
        | bass_figure figured_bass_alteration {
-               Music *m = unsmob_music ($1);
+               Music *m = Music::unsmob ($1);
                if (scm_to_double ($2)) {
                        SCM salter = m->get_property ("alteration");
                        SCM alter = scm_is_number (salter) ? salter : scm_from_int (0);
@@ -2479,39 +3168,24 @@ bass_figure:
                }
        }
        | bass_figure figured_bass_modification  {
-               Music *m = unsmob_music ($1);
-               if ($2 == ly_symbol2scm ("plus"))
-                       {
-                       m->set_property ("augmented", SCM_BOOL_T);
-                       }
-               else if ($2 == ly_symbol2scm ("slash"))
-                       {
-                       m->set_property ("diminished", SCM_BOOL_T);
-                       }
-               else if ($2 == ly_symbol2scm ("exclamation"))
-                       {
-                       m->set_property ("no-continuation", SCM_BOOL_T);
-                       }
-               else if ($2 == ly_symbol2scm ("backslash"))
-                       {
-                       m->set_property ("augmented-slash", SCM_BOOL_T);
-                       }
+               Music *m = Music::unsmob ($1);
+               m->set_property ($2, SCM_BOOL_T);
        }
        ;
 
 
 figured_bass_modification:
        E_PLUS          {
-               $$ = ly_symbol2scm ("plus");
+               $$ = ly_symbol2scm ("augmented");
        }
        | E_EXCLAMATION {
-               $$ = ly_symbol2scm ("exclamation");
+               $$ = ly_symbol2scm ("no-continuation");
        }
        | '/'           {
-               $$ = ly_symbol2scm ("slash");
+               $$ = ly_symbol2scm ("diminished");
        }
        | E_BACKSLASH {
-               $$ = ly_symbol2scm ("backslash");
+               $$ = ly_symbol2scm ("augmented-slash");
        }
        ;
 
@@ -2521,7 +3195,7 @@ br_bass_figure:
        }
        | '[' bass_figure {
                $$ = $2;
-               unsmob_music ($$)->set_property ("bracket-start", SCM_BOOL_T);
+               Music::unsmob ($$)->set_property ("bracket-start", SCM_BOOL_T);
        }
        ;
 
@@ -2534,56 +3208,72 @@ figure_list:
        }
        ;
 
-figure_spec:
-       FIGURE_OPEN figure_list FIGURE_CLOSE {
-               $$ = scm_reverse_x ($2, SCM_EOL);
-       }
-       ;
-
-
 optional_rest:
        /**/   { $$ = SCM_BOOL_F; }
        | REST { $$ = SCM_BOOL_T; }
        ;
 
-simple_element:
-       pitch exclamations questions octave_check maybe_notemode_duration optional_rest {
+pitch_or_music:
+       pitch exclamations questions octave_check maybe_notemode_duration optional_rest post_events {
                if (!parser->lexer_->is_note_state ())
                        parser->parser_error (@1, _ ("have to be in Note mode for notes"));
                if (!SCM_UNBNDP ($2)
                     || !SCM_UNBNDP ($3)
                     || scm_is_number ($4)
                     || !SCM_UNBNDP ($5)
-                    || scm_is_true ($6))
+                    || scm_is_true ($6)
+                   || scm_is_pair ($7))
                {
                        Music *n = 0;
                        if (scm_is_true ($6))
                                n = MY_MAKE_MUSIC ("RestEvent", @$);
                        else
                                n = MY_MAKE_MUSIC ("NoteEvent", @$);
-                       
+
                        n->set_property ("pitch", $1);
                        if (SCM_UNBNDP ($5))
                                n->set_property ("duration",
                                                 parser->default_duration_.smobbed_copy ());
                        else
                                n->set_property ("duration", $5);
-                       
+
                        if (scm_is_number ($4))
                        {
                                int q = scm_to_int ($4);
                                n->set_property ("absolute-octave", scm_from_int (q-1));
                        }
-                       
+
                        if (to_boolean ($3))
                                n->set_property ("cautionary", SCM_BOOL_T);
                        if (to_boolean ($2) || to_boolean ($3))
                                n->set_property ("force-accidental", SCM_BOOL_T);
-                       
+                       if (scm_is_pair ($7))
+                               n->set_property ("articulations",
+                                                scm_reverse_x ($7, SCM_EOL));
                        $$ = n->unprotect ();
                }
-       }
-       | DRUM_PITCH optional_notemode_duration {
+       } %prec ':'
+       | new_chord post_events {
+               if (!parser->lexer_->is_chord_state ())
+                        parser->parser_error (@1, _ ("have to be in Chord mode for chords"));
+               if (scm_is_pair ($2)) {
+                       if (Pitch::is_smob ($1))
+                               $1 = make_chord_elements (@1,
+                                                         $1,
+                                                         parser->default_duration_.smobbed_copy (),
+                                                         SCM_EOL);
+
+                       SCM elts = ly_append2 ($1, scm_reverse_x ($2, SCM_EOL));
+
+                       $$ = MAKE_SYNTAX ("event-chord", @1, elts);
+               } else if (!Pitch::is_smob ($1))
+                       $$ = MAKE_SYNTAX ("event-chord", @1, $1);
+               // A mere pitch drops through.
+       } %prec ':'
+       ;
+
+simple_element:
+       DRUM_PITCH optional_notemode_duration {
                Music *n = MY_MAKE_MUSIC ("NoteEvent", @$);
                n->set_property ("duration", $2);
                n->set_property ("drum-type", $1);
@@ -2605,70 +3295,41 @@ simple_element:
        }
        ;
 
-simple_chord_elements:
-       new_chord {
-                if (!parser->lexer_->is_chord_state ())
-                        parser->parser_error (@1, _ ("have to be in Chord mode for chords"));
-                $$ = $1;
-       }
-       | figure_spec optional_notemode_duration {
-               for (SCM s = $1; scm_is_pair (s); s = scm_cdr (s))
-               {
-                       unsmob_music (scm_car (s))->set_property ("duration", $2);
-               }
-               $$ = $1;
-       }
-       ;
-
 lyric_element:
-       lyric_markup {
+       full_markup {
+               if (!parser->lexer_->is_lyric_state ())
+                       parser->parser_error (@1, _ ("markup outside of text script or \\lyricmode"));
                $$ = $1;
        }
-       | LYRICS_STRING {
+       | STRING {
+               if (!parser->lexer_->is_lyric_state ())
+                       parser->parser_error (@1, _ ("unrecognized string, not in text script or \\lyricmode"));
                $$ = $1;
        }
+       | LYRIC_ELEMENT
        ;
 
-lyric_element_arg:
-       lyric_element
-       | lyric_element multiplied_duration post_events {
-               $$ = MAKE_SYNTAX ("lyric-event", @$, $1, $2);
-               if (scm_is_pair ($3))
-                       unsmob_music ($$)->set_property
-                               ("articulations", scm_reverse_x ($3, SCM_EOL));
-       }
-       | lyric_element post_event post_events {
-               $$ = MAKE_SYNTAX ("lyric-event", @$, $1,
-                                 parser->default_duration_.smobbed_copy ());
-               unsmob_music ($$)->set_property
-                       ("articulations", scm_cons ($2, scm_reverse_x ($3, SCM_EOL)));
-       }
-       | LYRIC_ELEMENT optional_notemode_duration post_events {
-               $$ = MAKE_SYNTAX ("lyric-event", @$, $1, $2);
-               if (scm_is_pair ($3))
-                       unsmob_music ($$)->set_property
-                               ("articulations", scm_reverse_x ($3, SCM_EOL));
-       }
-       ;
-
-
 lyric_element_music:
        lyric_element optional_notemode_duration post_events {
                $$ = MAKE_SYNTAX ("lyric-event", @$, $1, $2);
                if (scm_is_pair ($3))
-                       unsmob_music ($$)->set_property
+                       Music::unsmob ($$)->set_property
                                ("articulations", scm_reverse_x ($3, SCM_EOL));
-       }
+       } %prec ':'
        ;
 
+// Can return a single pitch rather than a list.
 new_chord:
-       steno_tonic_pitch optional_notemode_duration   {
-               $$ = make_chord_elements (@$, $1, $2, SCM_EOL);
+       steno_tonic_pitch maybe_notemode_duration   {
+               if (SCM_UNBNDP ($2))
+                       $$ = $1;
+               else
+                       $$ = make_chord_elements (@$, $1, $2, SCM_EOL);
        }
        | steno_tonic_pitch optional_notemode_duration chord_separator chord_items {
                SCM its = scm_reverse_x ($4, SCM_EOL);
                $$ = make_chord_elements (@$, $1, $2, scm_cons ($3, its));
-       }
+       } %prec ':'
        ;
 
 chord_items:
@@ -2727,10 +3388,10 @@ step_number:
        ;
 
 tempo_range:
-       UNSIGNED {
+       unsigned_number {
                $$ = $1;
-       }
-       | UNSIGNED '~' UNSIGNED {
+       } %prec ':'
+       | unsigned_number '-' unsigned_number {
                $$ = scm_cons ($1, $3);
        }
        ;
@@ -2770,26 +3431,43 @@ number_factor:
        | bare_number
        ;
 
+bare_number_common:
+       REAL
+       | NUMBER_IDENTIFIER
+       | REAL NUMBER_IDENTIFIER
+       {
+               $$ = scm_product ($1, $2);
+       }
+       ;
 
 bare_number:
-       bare_number_closed
+       bare_number_common
+       | UNSIGNED
        | UNSIGNED NUMBER_IDENTIFIER    {
                $$ = scm_product ($1, $2);
        }
-       | REAL NUMBER_IDENTIFIER        {
-               $$ = scm_product ($1, $2);
-       }
-       ;
-
-bare_number_closed:
-       UNSIGNED
-       | REAL
-       | NUMBER_IDENTIFIER
        ;
 
 unsigned_number:
        UNSIGNED
        | NUMBER_IDENTIFIER
+       {
+               if (!scm_is_integer ($1)
+                   || scm_is_true (scm_negative_p ($1)))
+               {
+                       parser->parser_error (@1, _("not an unsigned integer"));
+                       $$ = SCM_INUM0;
+               }
+       }
+       | embedded_scm
+       {
+               if (!scm_is_integer ($1)
+                   || scm_is_true (scm_negative_p ($1)))
+               {
+                       parser->parser_error (@1, _("not an unsigned integer"));
+                       $$ = SCM_INUM0;
+               }
+       }
        ;
 
 exclamations:
@@ -2804,7 +3482,13 @@ exclamations:
        ;
 
 questions:
-       { $$ = SCM_UNDEFINED; }
+// This precedence rule is rather weird.  It triggers when '!' is
+// encountered after a pitch, and is used for deciding whether to save
+// this instead for a figure modification.  This should not actually
+// occur in practice as pitches and figures are generated in different
+// modes.  Using a greedy (%right) precedence makes sure that we don't
+// get stuck in a wrong interpretation.
+       { $$ = SCM_UNDEFINED; } %prec ':'
        | questions '?'
         {
                 if (SCM_UNBNDP ($1))
@@ -2814,27 +3498,8 @@ questions:
         }
        ;
 
-/*
-This should be done more dynamically if possible.
-*/
-
-lyric_markup:
-       LYRIC_MARKUP_IDENTIFIER {
-               $$ = $1;
-       }
-       | LYRIC_MARKUP
-               { parser->lexer_->push_markup_state (); }
-       markup_top {
-               $$ = $3;
-               parser->lexer_->pop_state ();
-       }
-       ;
-
 full_markup_list:
-       MARKUPLIST_IDENTIFIER {
-               $$ = $1;
-       }
-       | MARKUPLIST
+       MARKUPLIST
                { parser->lexer_->push_markup_state (); }
        markup_list {
                $$ = $3;
@@ -2843,10 +3508,7 @@ full_markup_list:
        ;
 
 full_markup:
-       MARKUP_IDENTIFIER {
-               $$ = $1;
-       }
-       | MARKUP
+       MARKUP
                { parser->lexer_->push_markup_state (); }
        markup_top {
                $$ = $3;
@@ -2858,8 +3520,10 @@ markup_top:
        markup_list {
                $$ = scm_list_2 (ly_lily_module_constant ("line-markup"),  $1);
        }
-       | markup_head_1_list simple_markup      {
-               $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
+       | markup_head_1_list simple_markup
+       {
+               $$ = scm_car (MAKE_SYNTAX ("composed-markup-list",
+                                          @2, $1, scm_list_1 ($2)));
        }
        | simple_markup {
                $$ = $1;
@@ -2879,16 +3543,17 @@ markup_scm:
                }
        } BACKUP
        ;
-                       
+
 
 markup_list:
-       MARKUPLIST_IDENTIFIER {
+       markup_composed_list {
                $$ = $1;
        }
-       | markup_composed_list {
-               $$ = $1;
-       }
-       | markup_braced_list {
+       | markup_uncomposed_list
+       ;
+
+markup_uncomposed_list:
+       markup_braced_list {
                $$ = $1;
        }
        | markup_command_list {
@@ -2898,12 +3563,26 @@ markup_list:
        {
                $$ = $2;
        }
+       | SCORELINES {
+               SCM nn = parser->lexer_->lookup_identifier ("pitchnames");
+               parser->lexer_->push_note_state (nn);
+       } '{' score_body '}' {
+               Score *sc = Score::unsmob ($4);
+               sc->origin ()->set_spot (@$);
+               if (sc->defs_.empty ()) {
+                       Output_def *od = get_layout (parser);
+                       sc->add_output_def (od);
+                       od->unprotect ();
+               }
+               $$ = scm_list_1 (scm_list_2 (ly_lily_module_constant ("score-lines-markup-list"), $4));
+               parser->lexer_->pop_state ();
+       }
        ;
 
 markup_composed_list:
-       markup_head_1_list markup_braced_list {
-               $$ = scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, $2);
-
+       markup_head_1_list markup_uncomposed_list {
+               $$ = MAKE_SYNTAX ("composed-markup-list",
+                                 @2, $1, $2);
        }
        ;
 
@@ -2933,7 +3612,7 @@ markup_command_basic_arguments:
        EXPECT_MARKUP_LIST markup_command_list_arguments markup_list {
          $$ = scm_cons ($3, $2);
        }
-       | EXPECT_SCM markup_command_list_arguments embedded_scm_closed {
+       | EXPECT_SCM markup_command_list_arguments embedded_scm {
          $$ = check_scheme_arg (parser, @3, $3, $2, $1);
        }
        | EXPECT_NO_MORE_ARGS {
@@ -2967,19 +3646,17 @@ simple_markup:
        STRING {
                $$ = make_simple_markup ($1);
        }
-       | MARKUP_IDENTIFIER {
-               $$ = $1;
-       }
-       | LYRIC_MARKUP_IDENTIFIER {
-               $$ = $1;
-       }
-       | STRING_IDENTIFIER {
-               $$ = $1;
-       }
        | SCORE {
                SCM nn = parser->lexer_->lookup_identifier ("pitchnames");
                parser->lexer_->push_note_state (nn);
        } '{' score_body '}' {
+               Score *sc = Score::unsmob ($4);
+               sc->origin ()->set_spot (@$);
+               if (sc->defs_.empty ()) {
+                       Output_def *od = get_layout (parser);
+                       sc->add_output_def (od);
+                       od->unprotect ();
+               }
                $$ = scm_list_2 (ly_lily_module_constant ("score-markup"), $4);
                parser->lexer_->pop_state ();
        }
@@ -2993,9 +3670,10 @@ simple_markup:
        ;
 
 markup:
-       markup_head_1_list simple_markup        {
-               SCM mapper = ly_lily_module_constant ("map-markup-command-list");
-               $$ = scm_car (scm_call_2 (mapper, $1, scm_list_1 ($2)));
+       markup_head_1_list simple_markup
+       {
+               $$ = scm_car (MAKE_SYNTAX ("composed-markup-list",
+                                          @2, $1, scm_list_1 ($2)));
        }
        | simple_markup {
                $$ = $1;
@@ -3031,11 +3709,8 @@ otherwise, we have to import music classes into the lexer.
 int
 Lily_lexer::try_special_identifiers (SCM *destination, SCM sid)
 {
-       if (scm_is_string (sid)) {
-               *destination = sid;
-               return STRING_IDENTIFIER;
-       } else if (unsmob_book (sid)) {
-               Book *book =  unsmob_book (sid)->clone ();
+       if (Book::is_smob (sid)) {
+               Book *book =  Book::unsmob (sid)->clone ();
                *destination = book->self_scm ();
                book->unprotect ();
 
@@ -3043,53 +3718,31 @@ Lily_lexer::try_special_identifiers (SCM *destination, SCM sid)
        } else if (scm_is_number (sid)) {
                *destination = sid;
                return NUMBER_IDENTIFIER;
-        } else if (unsmob_context_def (sid)) {
-                Context_def *def= unsmob_context_def (sid)->clone ();
-
-                *destination = def->self_scm ();
-                def->unprotect ();
-
-                return CONTEXT_DEF_IDENTIFIER;
-        } else if (unsmob_context_mod (sid)) {
-                *destination = unsmob_context_mod (sid)->smobbed_copy ();
-
+       } else if (Context_def::is_smob (sid))
+       {
+               *destination = Context_def::unsmob (sid)->clone ()->unprotect ();
+               return SCM_IDENTIFIER;
+        } else if (Context_mod::is_smob (sid)) {
+                *destination = Context_mod::unsmob (sid)->smobbed_copy ();
                 return CONTEXT_MOD_IDENTIFIER;
-       } else if (unsmob_score (sid)) {
-               Score *score = new Score (*unsmob_score (sid));
-               *destination = score->self_scm ();
-
-               score->unprotect ();
-               return SCORE_IDENTIFIER;
-       } else if (Music *mus = unsmob_music (sid)) {
+       } else if (Music *mus = Music::unsmob (sid)) {
                mus = mus->clone ();
                *destination = mus->self_scm ();
-               unsmob_music (*destination)->
-                       set_property ("origin", make_input (last_input_));
-
                bool is_event = mus->is_mus_type ("post-event");
                mus->unprotect ();
                return is_event ? EVENT_IDENTIFIER : MUSIC_IDENTIFIER;
-       } else if (unsmob_pitch (sid)) {
-               *destination = unsmob_pitch (sid)->smobbed_copy ();
+       } else if (Pitch::is_smob (sid)) {
+               *destination = Pitch::unsmob (sid)->smobbed_copy ();
                return PITCH_IDENTIFIER;
-       } else if (unsmob_duration (sid)) {
-               *destination = unsmob_duration (sid)->smobbed_copy ();
+       } else if (Duration::is_smob (sid)) {
+               *destination = Duration::unsmob (sid)->smobbed_copy ();
                return DURATION_IDENTIFIER;
-       } else if (unsmob_output_def (sid)) {
-               Output_def *p = unsmob_output_def (sid);
-               p = p->clone ();
-
-               *destination = p->self_scm ();
-               p->unprotect ();
-               return OUTPUT_DEF_IDENTIFIER;
-       } else if (Text_interface::is_markup (sid)) {
-               *destination = sid;
-               if (is_lyric_state ())
-                       return LYRIC_MARKUP_IDENTIFIER;
-               return MARKUP_IDENTIFIER;
-       } else if (Text_interface::is_markup_list (sid)) {
-               *destination = sid;
-               return MARKUPLIST_IDENTIFIER;
+       } else if (Output_def::is_smob (sid)) {
+               *destination = Output_def::unsmob (sid)->clone ()->unprotect ();
+               return SCM_IDENTIFIER;
+       } else if (Score::is_smob (sid)) {
+               *destination = Score::unsmob (sid)->clone ()->unprotect ();
+               return SCM_IDENTIFIER;
        }
 
        return -1;
@@ -3111,21 +3764,41 @@ get_next_unique_lyrics_context_id ()
        return scm_from_locale_string (s);
 }
 
+// check_scheme_arg checks one argument with a given predicate for use
+// in an argument list and throws a syntax error if it is unusable.
+// The argument is prepended to the argument list in any case.  After
+// throwing a syntax error, the argument list is terminated with #f as
+// its last cdr in order to mark it as uncallable while not losing
+// track of its total length.
+//
+// There are a few special considerations: if optional argument disp
+// is given (otherwise it defaults to SCM_UNDEFINED), it will be used
+// instead of arg in a prospective error message.  This is useful if
+// arg is not the actual argument but rather a transformation of it.
+//
+// If arg itself is SCM_UNDEFINED, the predicate is considered false
+// and an error message using disp is produced unconditionally.
+
 SCM check_scheme_arg (Lily_parser *parser, Input loc,
-                     SCM arg, SCM args, SCM pred)
+                     SCM arg, SCM args, SCM pred, SCM disp)
 {
-       args = scm_cons (arg, args);
-       if (scm_is_true (scm_call_1 (pred, arg)))
-               return args;
+       if (SCM_UNBNDP (arg))
+               args = scm_cons (disp, args);
+       else {
+               args = scm_cons (arg, args);
+               if (scm_is_true (scm_call_1 (pred, arg)))
+                       return args;
+       }
        scm_set_cdr_x (scm_last_pair (args), SCM_EOL);
-       MAKE_SYNTAX ("argument-error", loc, scm_length (args), pred, arg);
+       MAKE_SYNTAX ("argument-error", loc, scm_length (args), pred,
+                    SCM_UNBNDP (disp) ? arg : disp);
        scm_set_cdr_x (scm_last_pair (args), SCM_BOOL_F);
        return args;
 }
 
 SCM loc_on_music (Input loc, SCM arg)
 {
-       if (Music *m = unsmob_music (arg))
+       if (Music *m = Music::unsmob (arg))
        {
                m = m->clone ();
                m->set_spot (loc);
@@ -3134,23 +3807,106 @@ SCM loc_on_music (Input loc, SCM arg)
        return arg;
 }
 
+SCM
+try_string_variants (SCM pred, SCM str)
+{
+       // a matching predicate is always ok
+       if (scm_is_true (scm_call_1 (pred, str)))
+               return str;
+       // a symbol may be interpreted as a list of symbols if it helps
+       if (scm_is_symbol (str)) {
+               str = scm_list_1 (str);
+               if (scm_is_true (scm_call_1 (pred, str)))
+                       return str;
+               return SCM_UNDEFINED;
+       }
+
+       // If this cannot be a string representation of a symbol list,
+       // we are through.
+
+       if (!is_regular_identifier (str, true))
+               return SCM_UNDEFINED;
+
+       str = scm_string_split (str, SCM_MAKE_CHAR ('.'));
+       for (SCM p = str; scm_is_pair (p); p = scm_cdr (p))
+               scm_set_car_x (p, scm_string_to_symbol (scm_car (p)));
+
+       // Let's attempt the symbol list interpretation first.
+
+       if (scm_is_true (scm_call_1 (pred, str)))
+               return str;
+
+       // If there is just one symbol in the list, we might interpret
+       // it as a single symbol
+
+       if (scm_is_null (scm_cdr (str)))
+       {
+               str = scm_car (str);
+               if (scm_is_true (scm_call_1 (pred, str)))
+                       return str;
+       }
+
+       return SCM_UNDEFINED;
+}
+
 bool
-is_regular_identifier (SCM id)
+is_regular_identifier (SCM id, bool multiple)
 {
+  if (!scm_is_string (id))
+         return false;
+
   string str = ly_scm2string (id);
-  char const *s = str.c_str ();
 
-  bool v = true;
-#if 0
-  isalpha (*s);
-  s++;
-#endif
-  while (*s && v)
-   {
-        v = v && isalnum (*s);
-        s++;
-   }
-  return v;
+  bool middle = false;
+
+  for (string::iterator it=str.begin(); it != str.end (); it++)
+  {
+         int c = *it & 0xff;
+         if ((c >= 'a' && c <= 'z')
+             || (c >= 'A' && c <= 'Z')
+             || c > 0x7f)
+                 middle = true;
+         else if (middle && (c == '-' || c == '_' || (multiple && c == '.')))
+                 middle = false;
+         else
+                 return false;
+  }
+  return middle;
+}
+
+SCM
+make_music_from_simple (Lily_parser *parser, Input loc, SCM simple)
+{
+       if (Music::is_smob (simple))
+               return simple;
+       if (parser->lexer_->is_note_state ()) {
+               if (scm_is_symbol (simple)) {
+                       Music *n = MY_MAKE_MUSIC ("NoteEvent", loc);
+                       n->set_property ("duration", parser->default_duration_.smobbed_copy ());
+                       n->set_property ("drum-type", simple);
+                       return n->unprotect ();
+               }
+               if (Pitch::is_smob (simple)) {
+                       Music *n = MY_MAKE_MUSIC ("NoteEvent", loc);
+                       n->set_property ("duration", parser->default_duration_.smobbed_copy ());
+                       n->set_property ("pitch", simple);
+                       return n->unprotect ();
+               }
+               return simple;
+       } else if (parser->lexer_->is_lyric_state ()) {
+               if (Text_interface::is_markup (simple))
+                       return MAKE_SYNTAX ("lyric-event", loc, simple,
+                                           parser->default_duration_.smobbed_copy ());
+       } else if (parser->lexer_->is_chord_state ()) {
+               if (Pitch::is_smob (simple))
+                       return MAKE_SYNTAX
+                               ("event-chord",
+                                loc,
+                                make_chord_elements (loc, simple,
+                                                     parser->default_duration_.smobbed_copy (),
+                                                     SCM_EOL));
+       }
+       return simple;
 }
 
 Music *
@@ -3167,20 +3923,16 @@ make_simple_markup (SCM a)
        return a;
 }
 
-bool
-is_duration (int t)
-{
-  return t && t == 1 << intlog2 (t);
-}
-
-void
-set_music_properties (Music *p, SCM a)
+SCM
+make_duration (SCM d, int dots)
 {
-  for (SCM k = a; scm_is_pair (k); k = scm_cdr (k))
-       p->set_property (scm_caar (k), scm_cdar (k));
+       int t = scm_to_int (d);
+       if (t > 0 && (t & (t-1)) == 0)
+               return Duration (intlog2 (t), dots).smobbed_copy ();
+       else
+               return SCM_UNDEFINED;
 }
 
-
 SCM
 make_chord_step (SCM step_scm, Rational alter)
 {
@@ -3203,7 +3955,7 @@ make_chord_elements (Input loc, SCM pitch, SCM dur, SCM modification_list)
        SCM res = scm_call_3 (chord_ctor, pitch, dur, modification_list);
        for (SCM s = res; scm_is_pair (s); s = scm_cdr (s))
        {
-               unsmob_music (scm_car (s))->set_spot (loc);
+               Music::unsmob (scm_car (s))->set_spot (loc);
        }
        return res;
 }
@@ -3215,6 +3967,9 @@ yylex (YYSTYPE *s, YYLTYPE *loc, Lily_parser *parser)
 
        lex->lexval_ = s;
        lex->lexloc_ = loc;
+       int tok = lex->pop_extra_token ();
+       if (tok >= 0)
+               return tok;
        lex->prepare_for_next_token ();
        return lex->yylex ();
 }