]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
release: 1.5.33
[lilypond.git] / lily / parser.yy
index 50b08cb8e3cc61be132ffd733dac070cdb75f490..4f3942169454d53111fd74a13ebe0de890c7b797 100644 (file)
@@ -5,11 +5,27 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
            Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
+/*
+  Two shift/reduce problems:
+    -
+    -
+ */
+
+/*
+
+the rules for who is protecting what are very shady. TODO: uniformise
+this.
+
+
+*/
+
+#include <ctype.h>
 #include <iostream.h>
+
 #include "translator-def.hh"
 #include "lily-guile.hh"
 #include "change-iterator.hh"
@@ -21,7 +37,6 @@
 #include "file-path.hh"
 #include "debug.hh"
 #include "dimensions.hh"
-#include "identifier.hh"
 #include "command-request.hh"
 #include "musical-request.hh"
 #include "my-lily-parser.hh"
 #include "transposed-music.hh"
 #include "time-scaled-music.hh"
 #include "repeated-music.hh"
+#include "untransposable-music.hh"
 #include "lilypond-input-version.hh"
 #include "grace-music.hh"
-#include "auto-change-music.hh"
 #include "part-combine-music.hh"
-
+#include "scm-hash.hh"
+#include "auto-change-iterator.hh"
+#include "un-relativable-music.hh"
 #include "chord.hh"
 
 bool
-is_duration_b (int t)
+regular_identifier_b (SCM id)
 {
-  return t && t == 1 << intlog2(t);
+  String str = ly_scm2string (id);
+  char const *s = str.ch_C() ;
+
+  bool v = true;
+  while (*s && v)
+   {
+        v = v && isalpha (*s);
+        s++;
+   }
+  return v;
 }
 
 
+Music* 
+set_property_music (SCM sym, SCM value)
+{
+       Music * p = new Music (SCM_EOL);
+       p->set_mus_property ("symbol", sym);
+       p->set_mus_property ("iterator-ctor",
+       Property_iterator::constructor_cxx_function);
+
+       p->set_mus_property ("value", value);
+       return p;
+}
+
+bool
+is_duration_b (int t)
+{
+  return t && t == 1 << intlog2 (t);
+}
+
 void
 set_music_properties (Music *p, SCM a)
 {
-  for (SCM k = a; gh_pair_p (k); k = gh_cdr (k))
+  for (SCM k = a; gh_pair_p (k); k = ly_cdr (k))
        {
-       p->set_mus_property (gh_caar (k), gh_cdar (k));
+       p->internal_set_mus_property (ly_caar (k), ly_cdar (k));
        }
 }
 
 
-// mmm JUNKME ?
-Lilypond_version oldest_version ("1.3.59");
 
-void
-print_lilypond_versions (ostream &os)
-{
-  os << _f ("Oldest supported input version: %s", oldest_version.str ()) 
-    << endl;
-}
 
 
-// needed for bison.simple's malloc() and free()
+
+
+// needed for bison.simple's malloc () and free ()
 #include <malloc.h>
 
 #ifndef NDEBUG
@@ -84,7 +122,8 @@ print_lilypond_versions (ostream &os)
 
 #define YYPARSE_PARAM my_lily_parser_l
 #define YYLEX_PARAM my_lily_parser_l
-#define THIS ((My_lily_parser *) my_lily_parser_l)
+#define THIS\
+       ((My_lily_parser *) my_lily_parser_l)
 
 #define yyerror THIS->parser_error
 #define ARRAY_SIZE(a,s)   if (a.size () != s) THIS->parser_error (_f ("Expecting %d arguments", s))
@@ -95,17 +134,14 @@ print_lilypond_versions (ostream &os)
 %union {
 
     Link_array<Request> *reqvec;
-    Identifier *id;
-    String * string;
+
+    String *string; // needed by the lexer as temporary scratch area.
     Music *music;
     Score *score;
     Scope *scope;
-
-    Musical_req* musreq;
+    Scheme_hash_table *scmhash;
     Music_output_def * outputdef;
 
-    Midi_def* midi;
-    Real real;
     Request * request;
 
     /* We use SCMs to do strings, because it saves us the trouble of
@@ -136,10 +172,10 @@ yylex (YYSTYPE *s,  void * v_l)
 
 /* tokens which are not keywords */
 %token AUTOCHANGE
+%token ALIAS
 %token APPLY
 %token ARPEGGIO
 %token DYNAMICSCRIPT
-%token TEXTSCRIPT
 %token ACCEPTS
 %token ALTERNATIVE
 %token BAR
@@ -152,14 +188,15 @@ yylex (YYSTYPE *s,  void * v_l)
 %token CONSISTS
 %token DURATION
 %token SEQUENTIAL
-%token ELEMENTDESCRIPTIONS
+%token GROBDESCRIPTIONS
 %token SIMULTANEOUS
 %token CONSISTSEND
 %token DENIES
 %token DURATION
 %token EXTENDER
-%token FONT
-%token GRACE
+%token FIGURES FIGURE_OPEN FIGURE_CLOSE
+%token GLISSANDO
+%token GRACE 
 %token HEADER
 %token HYPHEN
 %token IN_T
@@ -167,18 +204,19 @@ yylex (YYSTYPE *s,  void * v_l)
 %token KEY
 %token LYRICS
 %token MARK
-%token MEASURES
+%token MULTI_MEASURE_REST
 %token MIDI
 %token MM_T
-%token MUSICAL_PITCH
+%token PITCH
+%token DEFAULT
 %token NAME
-%token NOTENAMES
+%token PITCHNAMES
 %token NOTES
 %token PAPER
 %token PARTIAL
 %token PENALTY
 %token PROPERTY
-%token PUSH POP 
+%token OVERRIDE SET REVERT 
 %token PT_T
 %token RELATIVE
 %token REMOVE
@@ -199,62 +237,68 @@ yylex (YYSTYPE *s,  void * v_l)
 %token TRANSLATOR
 %token TRANSPOSE
 %token TYPE
+%token UNSET
 %token CONTEXT
 
 /* escaped */
-%token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER 
+%token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE E_TILDE
+%token E_BACKSLASH
 %token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET 
 
 %type <i>      exclamations questions dots
+%type <i>      bass_number bass_mod
+%type <scm>    bass_figure figure_list figure_spec
 %token <i>     DIGIT
 %token <scm>   NOTENAME_PITCH
 %token <scm>   TONICNAME_PITCH
 %token <scm>   CHORDMODIFIER_PITCH
 %token <scm>   DURATION_IDENTIFIER
+%token <scm>    FRACTION
 %token <id>    IDENTIFIER
 
 
-%token <id>    SCORE_IDENTIFIER
-%token <id>    MUSIC_OUTPUT_DEF_IDENTIFIER
+%token <scm>   SCORE_IDENTIFIER
+%token <scm>   MUSIC_OUTPUT_DEF_IDENTIFIER
 
 %token <scm>   NUMBER_IDENTIFIER
 %token <scm>   REQUEST_IDENTIFIER
 %token <scm>   MUSIC_IDENTIFIER TRANSLATOR_IDENTIFIER
 %token <scm>   STRING_IDENTIFIER SCM_IDENTIFIER 
 %token <scm>   RESTNAME
-%token <scm>   STRING 
+%token <scm>   STRING   
 %token <scm>   SCM_T
 %token <i>     UNSIGNED
-%token <real>   REAL
+%token <scm>   REAL
 
 %type <outputdef> output_def
-%type <scope>  lilypond_header lilypond_header_body
+%type <scmhash>        lilypond_header lilypond_header_body
 %type <request>        open_request_parens close_request_parens open_request close_request
 %type <request> request_with_dir request_that_take_dir verbose_request
 %type <i>      sub_quotes sup_quotes
 %type <music>  simple_element  request_chord command_element Simple_music  Composite_music 
-%type <music>  Alternative_music Repeated_music
+%type <music>  Repeated_music
+%type <scm>     Alternative_music
 %type <i>      tremolo_type
 %type <i>      bare_int  bare_unsigned
 %type <i>      script_dir
 
 %type <scm>    identifier_init 
 
-%type <scm> steno_duration optional_notemode_duration
-%type <scm> entered_notemode_duration explicit_duration
+%type <scm> steno_duration optional_notemode_duration multiplied_duration
+%type <scm>  verbose_duration
        
 %type <reqvec>  pre_requests post_requests
 %type <request> gen_text_def
-%type <scm>   steno_musical_pitch musical_pitch absolute_musical_pitch
-%type <scm>   steno_tonic_pitch
+%type <scm>   steno_pitch pitch absolute_pitch
+%type <scm>   explicit_pitch steno_tonic_pitch
 
 %type <scm>    chord_additions chord_subtractions chord_notes chord_step
 %type <music>  chord
 %type <scm>    chord_note chord_inversion chord_bass
-%type <scm>    duration_length
+%type <scm>    duration_length fraction
 
 %type <scm>  embedded_scm scalar
-%type <music>  Music Sequential_music Simultaneous_music Music_sequence
+%type <music>  Music Sequential_music Simultaneous_music 
 %type <music>  relative_music re_rhythmed_music part_combined_music
 %type <music>  property_def translator_change
 %type <scm> Music_list
@@ -264,7 +308,8 @@ yylex (YYSTYPE *s,  void * v_l)
 %type <music> command_req verbose_command_req
 %type <request>        extender_req
 %type <request> hyphen_req
-%type <scm>    string bare_number number_expression
+%type <scm>    string bare_number number_expression number_term number_factor 
+
 %type <score>  score_block score_body
 
 %type <scm>    translator_spec_block translator_spec_body
@@ -275,7 +320,10 @@ yylex (YYSTYPE *s,  void * v_l)
 
 
 %left '-' '+'
-%left '*' '/'
+
+/* We don't assign precedence to / and *, because we might need varied
+prec levels in different prods */
+
 %left UNARY_MINUS
 
 %%
@@ -285,11 +333,9 @@ lilypond:  /* empty */
        | lilypond assignment  { }
        | lilypond error {
                THIS->error_level_i_  = 1;
-               //THIS->parser_error (_ ("ly invalid"));
        }
        | lilypond INVALID      {
                THIS->error_level_i_  = 1;
-               //THIS->parser_error (_ ("ly invalid"));
        }
        ;
 
@@ -301,19 +347,18 @@ toplevel_expression:
                THIS->lexer_p_->chordmodifier_tab_  = $1;
        }
        | lilypond_header {
-               delete header_global_p;
-               header_global_p = $1;
+               if (global_header_p)
+                       scm_gc_unprotect_object (global_header_p->self_scm ());
+               global_header_p = $1;
        }
        | score_block {
                score_global_array.push ($1);
        }
        | output_def {
-               Identifier * id = new
-                       Music_output_def_identifier ($1, MUSIC_OUTPUT_DEF_IDENTIFIER);
                if (dynamic_cast<Paper_def*> ($1))
-                       THIS->lexer_p_->set_identifier ("$defaultpaper", id->self_scm ());
+                       THIS->lexer_p_->set_identifier ("$defaultpaper", $1->self_scm ());
                else if (dynamic_cast<Midi_def*> ($1))
-                       THIS->lexer_p_->set_identifier ("$defaultmidi", id->self_scm ());
+                       THIS->lexer_p_->set_identifier ("$defaultmidi", $1->self_scm ());
        }
        | embedded_scm {
                // junk value
@@ -330,24 +375,21 @@ chordmodifiers_block:
        CHORDMODIFIERS notenames_body   {  $$ = $2; }
        ;
 
-
 notenames_block:
-       NOTENAMES notenames_body   {  $$ = $2; }
+       PITCHNAMES notenames_body   {  $$ = $2; }
        ;
 
-
-
 notenames_body:
        embedded_scm    {
          int i = scm_ilength ($1);
 
          SCM tab = scm_make_vector (gh_int2scm (i), SCM_EOL);
-         for (SCM s = $1; gh_pair_p (s); s = gh_cdr (s)) {
-               SCM pt = gh_cdar (s);
+         for (SCM s = $1; gh_pair_p (s); s = ly_cdr (s)) {
+               SCM pt = ly_cdar (s);
                if (!unsmob_pitch (pt))
                        THIS->parser_error ("Need pitch object.");
                else
-                       scm_hashq_set_x (tab, gh_caar(s), pt);
+                       scm_hashq_set_x (tab, ly_caar (s), pt);
          }
 
          $$ = tab;
@@ -356,10 +398,12 @@ notenames_body:
 
 lilypond_header_body:
        {
-               $$ = new Scope;
-               THIS->lexer_p_-> scope_l_arr_.push ($$);
+               $$ = new Scheme_hash_table;
+               
+               Scope *sc = new Scope ($$);
+               THIS->lexer_p_-> scope_l_arr_.push (sc);
        }
-       | lilypond_header_body assignment semicolon { 
+       | lilypond_header_body assignment  { 
 
        }
        ;
@@ -367,7 +411,7 @@ lilypond_header_body:
 lilypond_header:
        HEADER '{' lilypond_header_body '}'     {
                $$ = $3;
-               THIS->lexer_p_-> scope_l_arr_.pop ();           
+               delete THIS->lexer_p_-> scope_l_arr_.pop ();
        }
        ;
 
@@ -377,9 +421,20 @@ lilypond_header:
 */
 assignment:
        STRING {
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /* cont */ '=' identifier_init  {
+
+       /*
+               Should find generic way of associating input with objects.
+       */
+               Input ip = THIS->pop_spot ();
+
+               if (! regular_identifier_b ($1))
+               {
+                       ip.warning (_ ("Identifier should have  alphabetic characters only"));
+               }
+
                THIS->lexer_p_->set_identifier (ly_scm2string ($1), $4);
 
 /*
@@ -389,9 +444,6 @@ assignment:
 all objects can be unprotected as soon as they're here.
 
 */
-               Identifier * id =unsmob_identifier ($4);
-               Input spot = THIS->pop_spot ();
-               if (id) id->set_spot (spot);
        }
        ;
 
@@ -399,23 +451,25 @@ all objects can be unprotected as soon as they're here.
 
 identifier_init:
        score_block {
-               $$ = (new Score_identifier ($1, SCORE_IDENTIFIER))->self_scm();
+               $$ = $1->self_scm ();
+               scm_gc_unprotect_object ($$);
        }
        | output_def {
-               $$ = (new Music_output_def_identifier ($1, MUSIC_OUTPUT_DEF_IDENTIFIER))->self_scm();
+               $$ = $1->self_scm ();
+               scm_gc_unprotect_object ($$);
        }
        | translator_spec_block {
                $$ = $1;
        }
        | Music  {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
        | post_request {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
        }
        | number_expression {
@@ -441,7 +495,7 @@ translator_spec_body:
                $$ = unsmob_translator_def ($1)->clone_scm ();
                unsmob_translator_def ($$)-> set_spot (THIS->here_input ());
        }
-       | TYPE STRING semicolon {
+       | TYPE STRING   {
                $$ = Translator_def::make_scm ();
                Translator_def*td =  unsmob_translator_def ($$);
                td->translator_group_type_ = $2;
@@ -450,46 +504,40 @@ translator_spec_body:
        | translator_spec_body STRING '=' embedded_scm                  {
                unsmob_translator_def ($$)->add_property_assign ($2, $4);
        }
-       | translator_spec_body STRING PUSH embedded_scm '=' embedded_scm {
+       | translator_spec_body STRING OVERRIDE embedded_scm '=' embedded_scm {
                unsmob_translator_def ($$)
                        ->add_push_property (scm_string_to_symbol ($2), $4, $6);
        }
-       | translator_spec_body STRING POP embedded_scm  {
-         unsmob_translator_def($$)->add_pop_property (
+       | translator_spec_body STRING REVERT embedded_scm  {
+         unsmob_translator_def ($$)->add_pop_property (
                scm_string_to_symbol ($2), $4);
        }
-       | translator_spec_body STRING '=' identifier_init semicolon     { 
-               SCM v = gh_int2scm (0);
-               if (gh_string_p ($4) || gh_number_p ($4) || gh_boolean_p ($4))
-                       v = $4;
-               else 
-                       THIS->parser_error (_("Wrong type for property value"));
-
-               /* ugh*/
-               unsmob_translator_def($$)->add_property_assign ($2, v);
-       }
-       | translator_spec_body NAME STRING semicolon {
+       | translator_spec_body NAME STRING  {
                unsmob_translator_def ($$)->type_name_ = $3;
        }
-       | translator_spec_body CONSISTS STRING semicolon {
+       | translator_spec_body CONSISTS STRING  {
                unsmob_translator_def ($$)->add_element ($3);
        }
-       | translator_spec_body ELEMENTDESCRIPTIONS embedded_scm {
-               for (SCM p = $3; gh_pair_p (p); p = gh_cdr (p))
-                       unsmob_translator_def ($$)
-                       ->add_property_assign (scm_symbol_to_string (gh_caar (p)), gh_cdar (p));
-
+       | translator_spec_body ALIAS STRING  {
+               Translator_def*td = unsmob_translator_def ($$);
+               td->type_aliases_ = gh_cons ($3, td->type_aliases_);
        }
-       | translator_spec_body CONSISTSEND STRING semicolon {
+       | translator_spec_body GROBDESCRIPTIONS embedded_scm {
+               Translator_def*td = unsmob_translator_def($$);
+               // td->add_property_assign (ly_symbol2scm ("allGrobDescriptions"), $3);
+               for (SCM p = $3; gh_pair_p (p); p = ly_cdr (p))
+                       td->add_property_assign (scm_symbol_to_string (ly_caar (p)), ly_cdar (p));
+       }
+       | translator_spec_body CONSISTSEND STRING  {
                unsmob_translator_def ($$)->add_last_element ( $3);
        }
-       | translator_spec_body ACCEPTS STRING semicolon {
+       | translator_spec_body ACCEPTS STRING  {
                unsmob_translator_def ($$)->set_acceptor ($3,true);
        }
-       | translator_spec_body DENIES STRING semicolon {
+       | translator_spec_body DENIES STRING  {
                unsmob_translator_def ($$)->set_acceptor ($3,false);
        }
-       | translator_spec_body REMOVE STRING semicolon {
+       | translator_spec_body REMOVE STRING  {
                unsmob_translator_def ($$)->remove_element ($3);
        }
        ;
@@ -499,42 +547,35 @@ translator_spec_body:
 */
 score_block:
        SCORE { 
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /*cont*/ '{' score_body '}'     {
                THIS->pop_spot ();
                $$ = $4;
                if (!$$->def_p_arr_.size ())
                {
-                 Identifier *id =
-                       unsmob_identifier (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
-                 $$->add_output (id ? id->access_content_Music_output_def (true) : new Paper_def );
+                 Music_output_def *id =
+                       unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
+                 $$->add_output (id ? id->clone () :  new Paper_def );
                }
        }
-/*
-       | SCORE '{' score_body error {
-               $$ = $3
-               $$->set_spot (THIS->here_input ());
-               // THIS->here_input ().error ("SCORE INVALID");
-               $$->error ("SCORE INVALID");
-               THIS->parser_error (_f ("SCORE ERROR"));
-       }
-*/
        ;
 
 score_body:
        Music   {
                $$ = new Score;
-
+       
                $$->set_spot (THIS->here_input ());
                SCM m = $1->self_scm ();
-               scm_unprotect_object (m);
+               scm_gc_unprotect_object (m);
                $$->music_ = m;
        }
        | SCORE_IDENTIFIER {
-               $$ = $1->access_content_Score (true);
+               $$ = new Score (*unsmob_score ($1));
+               $$->set_spot (THIS->here_input ());
        }
        | score_body lilypond_header    {
+               scm_gc_unprotect_object ($2->self_scm ()); 
                $$->header_p_ = $2;
        }
        | score_body output_def {
@@ -552,18 +593,18 @@ score_body:
 output_def:
        music_output_def_body '}' {
                $$ = $1;
-               THIS-> lexer_p_-> scope_l_arr_.pop();
+               THIS-> lexer_p_-> scope_l_arr_.pop ();
        }
        ;
 
 music_output_def_body:
        MIDI '{'    {
-        Identifier *id = unsmob_identifier (THIS->lexer_p_->lookup_identifier ("$defaultmidi"));
+          Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultmidi"));
 
                
         Midi_def* p =0;
        if (id)
-               p = dynamic_cast<Midi_def*> (id->access_content_Music_output_def (true));
+               p = dynamic_cast<Midi_def*> (id->clone ());
        else
                p = new Midi_def;
 
@@ -571,26 +612,29 @@ music_output_def_body:
         THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
        }
        | PAPER '{'     {
-                 Identifier *id = unsmob_identifier (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
+               Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
                  Paper_def *p = 0;
                if (id)
-                       p = dynamic_cast<Paper_def*> (id->access_content_Music_output_def (true));
+                       p = dynamic_cast<Paper_def*> (id->clone ());
                else
                        p = new Paper_def;
                THIS-> lexer_p_-> scope_l_arr_.push (p->scope_p_);
                $$ = p;
        }
        | PAPER '{' MUSIC_OUTPUT_DEF_IDENTIFIER         {
-               Music_output_def *p = $3->access_content_Music_output_def (true);
+               Music_output_def *p = unsmob_music_output_def ($3);
+               p = p->clone ();
                THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
                $$ = p;
        }
        | MIDI '{' MUSIC_OUTPUT_DEF_IDENTIFIER  {
-               Music_output_def *p = $3->access_content_Music_output_def (true);
+               Music_output_def *p = unsmob_music_output_def ($3);
+               p = p->clone ();
+
                THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
                $$ = p;
        }
-       | music_output_def_body assignment semicolon {
+       | music_output_def_body assignment  {
 
        }
        | music_output_def_body translator_spec_block   {
@@ -599,7 +643,7 @@ music_output_def_body:
        | music_output_def_body STYLESHEET embedded_scm {
                dynamic_cast<Paper_def*> ($$)-> style_sheet_ = $3;
        }
-       | music_output_def_body tempo_request semicolon {
+       | music_output_def_body tempo_request  {
                /*
                        junk this ? there already is tempo stuff in
                        music.
@@ -621,17 +665,22 @@ tempo_request:
        }
        ;
 
+/*
+The representation of a  list is the
+
+  (LIST . LAST-CONS)
+
+ to have  efficient append.
+*/
 Music_list: /* empty */ {
                $$ = gh_cons (SCM_EOL, SCM_EOL);
        }
        | Music_list Music {
                SCM s = $$;
                SCM c = gh_cons ($2->self_scm (), SCM_EOL);
-               scm_unprotect_object ($2->self_scm ()); /* UGH */
-
-       
-               if (gh_pair_p (gh_cdr (s)))
-                       gh_set_cdr_x (gh_cdr (s), c); /* append */
+               scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
+               if (gh_pair_p (ly_cdr (s)))
+                       gh_set_cdr_x (ly_cdr (s), c); /* append */
                else
                        gh_set_car_x (s, c); /* set first cons */
                gh_set_cdr_x (s, c) ;  /* remember last cell */ 
@@ -648,27 +697,38 @@ Music:
 
 Alternative_music:
        /* empty */ {
-               $$ = 0;
+               $$ = SCM_EOL;
        }
-       | ALTERNATIVE Music_sequence {
-               $$ = $2;
-               $2->set_spot (THIS->here_input ());
+       | ALTERNATIVE '{' Music_list '}' {
+               $$ = $3;
        }
        ;
 
-
-
-
 Repeated_music:
-       REPEAT STRING bare_unsigned Music Alternative_music
+       REPEAT string bare_unsigned Music Alternative_music
        {
-               Music_sequence* m = dynamic_cast <Music_sequence*> ($5);
-               if (m && $3 < m->length_i ())
-                       $5->origin ()->warning (_ ("More alternatives than repeats.  Junking excess alternatives."));
+               Music *beg = $4;
+               int times = $3;
+               SCM alts = gh_pair_p ($5) ? gh_car ($5) : SCM_EOL;
+               if (times < scm_ilength (alts)) {
+                 unsmob_music (gh_car (alts))
+                   ->origin ()->warning (
+                   _("More alternatives than repeats.  Junking excess alternatives."));
+                 alts = ly_truncate_list (times, alts);
+               }
+
+               Repeated_music * r = new Repeated_music (SCM_EOL);
+               if (beg)
+                       {
+                       r-> set_mus_property ("element", beg->self_scm ());
+                       scm_gc_unprotect_object (beg->self_scm ());
+                       }
+               r->set_mus_property ("repeat-count", gh_int2scm (times >? 1));
 
-               SCM func = scm_eval2 (ly_symbol2scm ("repeat-name-to-ctor"), SCM_EOL);
+               r-> set_mus_property ("elements",alts);
+               SCM func = scm_primitive_eval (ly_symbol2scm ("repeat-name-to-ctor"));
                SCM result = gh_call1 (func, $2);
-               Repeated_music * r = new Repeated_music ($4, $3 >? 1, m);
+
                set_music_properties (r, result);
 
                r->set_spot (*$4->origin ());
@@ -676,26 +736,26 @@ Repeated_music:
        }
        ;
 
-Music_sequence: '{' Music_list '}'     {
-               $$ = new Music_sequence (gh_car ($2));
-       }
-       ;
-
 Sequential_music:
        SEQUENTIAL '{' Music_list '}'           {
-               $$ = new Sequential_music (gh_car ($3));
+               $$ = new Sequential_music (SCM_EOL);
+               $$->set_mus_property ("elements", ly_car ($3));
        }
        | '{' Music_list '}'            {
-               $$ = new Sequential_music (gh_car ($2));
+               $$ = new Sequential_music (SCM_EOL);
+               $$->set_mus_property ("elements", ly_car ($2));
        }
        ;
 
 Simultaneous_music:
        SIMULTANEOUS '{' Music_list '}'{
-               $$ = new Simultaneous_music (gh_car ($3));
+               $$ = new Simultaneous_music (SCM_EOL);
+               $$->set_mus_property ("elements", ly_car ($3));
+
        }
        | '<' Music_list '>'    {
-               $$ = new Simultaneous_music (gh_car ($2));
+               $$ = new Simultaneous_music (SCM_EOL);
+               $$->set_mus_property ("elements", ly_car ($2));
        }
        ;
 
@@ -705,20 +765,20 @@ Simple_music:
                SCM pred = $2;
                if (!gh_symbol_p ($3))
                {
-                       THIS->parser_error (_("Second argument must be a symbol")); 
+                       THIS->parser_error (_ ("Second argument must be a symbol")); 
                }
                /*hould check # args */
                if (!gh_procedure_p (pred))
                {
-                       THIS->parser_error (_("First argument must be a procedure taking 1 argument"));
+                       THIS->parser_error (_ ("First argument must be a procedure taking 1 argument"));
                }
 
-         Music *m = new Music;
-         m->set_mus_property ("predicate", pred);
-         m->set_mus_property ("symbol", $3);
-         m->set_mus_property ("value",  $5);
-         m->set_mus_property ("type",
-                       Output_property_music_iterator::constructor_cxx_function);
+               Music *m = new Music (SCM_EOL);
+               m->set_mus_property ("predicate", pred);
+               m->set_mus_property ("grob-property", $3);
+               m->set_mus_property ("grob-value",  $5);
+               m->set_mus_property ("iterator-ctor",
+               Output_property_music_iterator::constructor_cxx_function);
 
                $$ = m;
        }
@@ -727,20 +787,14 @@ Simple_music:
        }
        | property_def
        | translator_change
-       | Simple_music '*' bare_unsigned '/' bare_unsigned      {
-               $$ = $1;
-               $$->compress (Moment($3, $5 ));
-       }
-       | Simple_music '*' bare_unsigned                 {
-               $$ = $1;
-               $$->compress (Moment ($3, 1));
-       }
        ;
 
 
 Composite_music:
        CONTEXT STRING Music    {
-               Context_specced_music *csm =  new Context_specced_music ($3);
+               Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", $3->self_scm ());
+               scm_gc_unprotect_object ($3->self_scm ());
 
                csm->set_mus_property ("context-type",$2);
                csm->set_mus_property ("context-id", ly_str02scm (""));
@@ -748,17 +802,58 @@ Composite_music:
                $$ = csm;
        }
        | AUTOCHANGE STRING Music       {
-               Auto_change_music * chm = new Auto_change_music ($3);
+               Music * chm = new Music_wrapper (SCM_EOL);
+               chm->set_mus_property ("element", $3->self_scm ());
+               chm->set_mus_property ("iterator-ctor", Auto_change_iterator::constructor_cxx_function);
+
+               scm_gc_unprotect_object ($3->self_scm ());
                chm->set_mus_property ("what", $2); 
 
                $$ = chm;
                chm->set_spot (*$3->origin ());
        }
        | GRACE Music {
-               $$ = new Grace_music ($2);
+#if 1
+       /*
+               The other version is for easier debugging  of
+               Sequential_music_iterator in combination with grace notes.
+       */
+
+               SCM start = THIS->lexer_p_->lookup_identifier ("startGraceMusic");
+               SCM stop = THIS->lexer_p_->lookup_identifier ("stopGraceMusic");
+               Music *startm = unsmob_music (start);
+               Music *stopm = unsmob_music (stop);
+
+               SCM ms = SCM_EOL;
+               if (stopm) {
+                       stopm = stopm->clone ();
+                       ms = gh_cons (stopm->self_scm (), ms);
+                       scm_gc_unprotect_object (stopm->self_scm ());
+               }
+               ms = gh_cons ($2->self_scm (), ms);
+               scm_gc_unprotect_object ($2->self_scm());
+               if (startm) {
+                       startm = startm->clone ();
+                       ms = gh_cons (startm->self_scm () , ms);
+                       scm_gc_unprotect_object (startm->self_scm ());
+               }
+
+               Music* seq = new Sequential_music (SCM_EOL);
+               seq->set_mus_property ("elements", ms);
+
+               $$ = new Grace_music (SCM_EOL);
+               $$->set_mus_property ("element", seq->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
+#else
+               $$ = new Grace_music (SCM_EOL);
+               $$->set_mus_property ("element", $2->self_scm ());
+               scm_gc_unprotect_object ($2->self_scm ());
+#endif
        }
-       | CONTEXT STRING '=' STRING Music {
-               Context_specced_music *csm =  new Context_specced_music ($5);
+       | CONTEXT string '=' string Music {
+               Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", $5->self_scm ());
+               scm_gc_unprotect_object ($5->self_scm ());
 
                csm->set_mus_property ("context-type", $2);
                csm->set_mus_property ("context-id", $4);
@@ -766,30 +861,53 @@ Composite_music:
                $$ = csm;
        }
        | TIMES {
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /* CONTINUED */ 
-               bare_unsigned '/' bare_unsigned Music   
+               fraction Music  
 
        {
-               $$ = new Time_scaled_music ($3, $5, $6);
+               int n = gh_scm2int (ly_car ($3)); int d = gh_scm2int (ly_cdr ($3));
+               Music *mp = $4;
+               $$ = new Time_scaled_music (SCM_EOL);
                $$->set_spot (THIS->pop_spot ());
+
+
+               $$->set_mus_property ("element", mp->self_scm ());
+               scm_gc_unprotect_object (mp->self_scm ());
+               $$->set_mus_property ("numerator", gh_int2scm (n));
+               $$->set_mus_property ("denominator", gh_int2scm (d));
+               $$->compress (Moment (Rational (n,d)));
+
        }
        | Repeated_music                { $$ = $1; }
        | Simultaneous_music            { $$ = $1; }
        | Sequential_music              { $$ = $1; }
-       | TRANSPOSE musical_pitch Music {
-               $$ = new Transposed_music ($3, *unsmob_pitch ($2));
+       | TRANSPOSE pitch Music {
+               $$ = new Transposed_music (SCM_EOL);
+               Music *p = $3;
+               Pitch pit = *unsmob_pitch ($2);
+
+               p->transpose (pit);
+               $$->set_mus_property ("element", p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
        }
        | TRANSPOSE steno_tonic_pitch Music {
-               $$ = new Transposed_music ($3, *unsmob_pitch ($2));
+               $$ = new Transposed_music (SCM_EOL);
+               Music *p = $3;
+               Pitch pit = *unsmob_pitch ($2);
+
+               p->transpose (pit);
+               $$->set_mus_property ("element", p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
+       
        }
        | APPLY embedded_scm Music  {
                SCM ret = gh_call1 ($2, $3->self_scm ());
                Music *m = unsmob_music (ret);
                if (!m) {
                        THIS->parser_error ("\\apply must return a Music");
-                       m = new Music ();
+                       m = new Music (SCM_EOL);
                        }
                $$ = m;
        }
@@ -799,11 +917,24 @@ Composite_music:
                { $$ = $3;
                  THIS->lexer_p_->pop_state ();
                }
+       | FIGURES
+               { THIS->lexer_p_->push_figuredbass_state (); }
+       Music
+               {
+                 Music * chm = new Untransposable_music () ;
+                 chm->set_mus_property ("element", $3->self_scm ());
+                 $$ = chm;
+
+                 THIS->lexer_p_->pop_state ();
+       }
        | CHORDS
                { THIS->lexer_p_->push_chord_state (); }
        Music
                {
-                 $$ = $3;
+                 Music * chm = new Un_relativable_music ;
+                 chm->set_mus_property ("element", $3->self_scm ());
+                 $$ = chm;
+
                  THIS->lexer_p_->pop_state ();
        }
        | LYRICS
@@ -819,29 +950,47 @@ Composite_music:
        ;
 
 relative_music:
-       RELATIVE absolute_musical_pitch Music {
-               $$ = new Relative_octave_music ($3, *unsmob_pitch ($2));
+       RELATIVE absolute_pitch Music {
+               Music * p = $3;
+               Pitch pit = *unsmob_pitch ($2);
+               $$ = new Relative_octave_music (SCM_EOL);
+
+               $$->set_mus_property ("element", p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
+
+               $$->set_mus_property ("last-pitch", p->to_relative_octave (pit).smobbed_copy ());
+
        }
        ;
 
 re_rhythmed_music:
        ADDLYRICS Music Music {
-               Lyric_combine_music * l = new Lyric_combine_music ($2, $3);
-               $$ = l;
+         Lyric_combine_music * l = new Lyric_combine_music (SCM_EOL);
+         l->set_mus_property ("elements", gh_list ($2->self_scm (), $3->self_scm (), SCM_UNDEFINED));
+         scm_gc_unprotect_object ($3->self_scm ());
+         scm_gc_unprotect_object ($2->self_scm ());
+         $$ = l;
        }
        ;
 
 part_combined_music:
        PARTCOMBINE STRING Music Music {
-               Part_combine_music * p = new Part_combine_music ($2, $3, $4);
+               Part_combine_music * p = new Part_combine_music (SCM_EOL);
+
+               p->set_mus_property ("what", $2);
+               p->set_mus_property ("elements", gh_list ($3->self_scm (),$4->self_scm (), SCM_UNDEFINED));  
+
+               scm_gc_unprotect_object ($3->self_scm ());
+               scm_gc_unprotect_object ($4->self_scm ());  
+
                $$ = p;
        }
        ;
 
 translator_change:
        TRANSLATOR STRING '=' STRING  {
-               Music * t = new Music;
-               t->set_mus_property ("type",
+               Music * t = new Music (SCM_EOL);
+               t->set_mus_property ("iterator-ctor",
                        Change_iterator::constructor_cxx_function);
                t-> set_mus_property ("change-to-type", $2);
                t-> set_mus_property ("change-to-id", $4);
@@ -853,40 +1002,77 @@ translator_change:
 
 property_def:
        PROPERTY STRING '.' STRING '='  scalar {
-               Music *t = new Music;
+               
+               Music *t = set_property_music (scm_string_to_symbol ($4), $6);
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
 
-               t->set_mus_property ("type",
-                       Property_iterator::constructor_cxx_function);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
+
+               $$ = csm;
+               $$->set_spot (THIS->here_input ());
+
+               csm-> set_mus_property ("context-type", $2);
+       }
+       | PROPERTY STRING '.' STRING UNSET {
+               Music *t = new Music (SCM_EOL);
+
+               t->set_mus_property ("iterator-ctor",
+                       Property_unset_iterator::constructor_cxx_function);
                t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-               t->set_mus_property ("value", $6);
 
-               Context_specced_music *csm = new Context_specced_music (t);
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
+
+               $$ = csm;
+               $$->set_spot (THIS->here_input ());
+
+               csm-> set_mus_property ("context-type", $2);
+       }
+       | PROPERTY STRING '.' STRING SET embedded_scm '=' embedded_scm {
+               Music *t = new Music (SCM_EOL);
+               t->set_mus_property ("iterator-ctor",
+                       Push_property_iterator::constructor_cxx_function);
+               t->set_mus_property ("symbols", scm_string_to_symbol ($4));
+               t->set_mus_property ("pop-first", SCM_BOOL_T);
+               t->set_mus_property ("grob-property", $6);
+               t->set_mus_property ("grob-value", $8);
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
                csm-> set_mus_property ("context-type", $2);
        }
-       | PROPERTY STRING '.' STRING PUSH embedded_scm '=' embedded_scm {
-               Music *t = new Music;
-               t->set_mus_property ("type",
+       | PROPERTY STRING '.' STRING OVERRIDE embedded_scm '=' embedded_scm {
+               Music *t = new Music (SCM_EOL);
+               t->set_mus_property ("iterator-ctor",
                        Push_property_iterator::constructor_cxx_function);
                t->set_mus_property ("symbols", scm_string_to_symbol ($4));
-               t->set_mus_property ("element-property", $6);
-               t->set_mus_property ("element-value", $8);
-               Context_specced_music *csm = new Context_specced_music (t);
+               t->set_mus_property ("grob-property", $6);
+               t->set_mus_property ("grob-value", $8);
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
+
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
                csm-> set_mus_property ("context-type", $2);
        }
-       | PROPERTY STRING '.' STRING POP embedded_scm {
-               Music *t = new Music;
-               t->set_mus_property ("type",
+       | PROPERTY STRING '.' STRING REVERT embedded_scm {
+               Music *t = new Music (SCM_EOL);
+               t->set_mus_property ("iterator-ctor",
                        Pop_property_iterator::constructor_cxx_function);
                t->set_mus_property ("symbols", scm_string_to_symbol ($4));
-               t->set_mus_property ("element-property", $6);
+               t->set_mus_property ("grob-property", $6);
+
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
-               Context_specced_music *csm = new Context_specced_music (t);
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
@@ -902,91 +1088,126 @@ scalar:
 
 
 request_chord:
-       pre_requests simple_element post_requests       {
-               Music_sequence *l = dynamic_cast<Music_sequence*>($2);
-               if (l) {
-                       for (int i=0; i < $1->size(); i++)
-                               l->append_music ($1->elem(i));
-                       for (int i=0; i < $3->size(); i++)
-                               l->append_music ($3->elem(i));
-                       }
-               else
-                       programming_error ("Need Sequence to add music to");
-               $$ = $2;
+       pre_requests {
+               THIS->push_spot ();
+       } /*cont */ simple_element post_requests        {
+               Music_sequence *l = dynamic_cast<Music_sequence*> ($3);
                
+               $1->concat (*$4);
+               for (int i=0; i < $1->size (); i++) {
+                 Music * m = $1->elem (i);
+                 l->append_music (m);
+               }
+               $$ = $3;
+
+               delete $1;
+               delete $4;
        }
        | command_element
        ;
 
 command_element:
        command_req {
-               $$ = new Request_chord (gh_cons ($1->self_scm (), SCM_EOL));
+               $$ = new Request_chord (SCM_EOL);
+               $$->set_mus_property ("elements", gh_cons ($1->self_scm (), SCM_EOL));
                $$-> set_spot (THIS->here_input ());
                $1-> set_spot (THIS->here_input ());
        }
-       | BAR STRING ';'                        {
-               Music *t = new Music;
+       | E_BACKSLASH {
+               $$ = new Music (gh_list (gh_cons (ly_symbol2scm ("name"), ly_symbol2scm ("separator")), SCM_UNDEFINED));
+               $$->set_spot (THIS->here_input ());
+       }
+       | '|'      {
 
-               t->set_mus_property ("type",
-                       Property_iterator::constructor_cxx_function);
-               t->set_mus_property ("symbol", ly_symbol2scm ("whichBar"));
-               t->set_mus_property ("value", $2);
+               extern Music * get_barcheck();
+               $$ = get_barcheck ();
+               $$->set_spot (THIS->here_input ());
+       }
+       | BAR STRING                    {
+               Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
+
+               Context_specced_music *csm = new Context_specced_music (SCM_EOL);
+               csm->set_mus_property ("element", t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
-               Context_specced_music *csm = new Context_specced_music (t);
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
                csm->set_mus_property ("context-type", ly_str02scm ("Score"));
        }
-       | PARTIAL duration_length ';'   {
-               Music * p = new Music;
-               p->set_mus_property ("symbol", ly_symbol2scm ( "measurePosition"));
-               p->set_mus_property ("type",
-                       Property_iterator::constructor_cxx_function);
+       | PARTIAL duration_length       {
+               Moment m = - unsmob_duration ($2)->length_mom ();
+               Music * p = set_property_music (ly_symbol2scm ( "measurePosition"),m.smobbed_copy ());
 
-               Moment m = - unsmob_duration($2)->length_mom ();
-               p->set_mus_property ("value", m.smobbed_copy ());
+               Context_specced_music * sp = new Context_specced_music (SCM_EOL);
+               sp->set_mus_property ("element", p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
 
-               Context_specced_music * sp = new Context_specced_music (p);
                $$ =sp ;
                sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
        }
-       | CLEF STRING ';' {
-               SCM func = scm_eval2 (ly_symbol2scm ("clef-name-to-properties"), SCM_EOL);
+       | CLEF STRING  {
+               SCM func = scm_primitive_eval (ly_symbol2scm ("clef-name-to-properties"));
                SCM result = gh_call1 (func, $2);
 
                SCM l = SCM_EOL;
-               for (SCM s = result ; gh_pair_p (s); s = gh_cdr (s)) {
-                       Music * p = new Music;
-                       set_music_properties(p, gh_car (s));
+               for (SCM s = result ; gh_pair_p (s); s = ly_cdr (s)) {
+                       Music * p = new Music (SCM_EOL);
+                       set_music_properties (p, ly_car (s));
                        l = gh_cons (p->self_scm (), l);
-                       scm_unprotect_object (p->self_scm ());
+                       scm_gc_unprotect_object (p->self_scm ());
                }
-               Sequential_music * seq = new Sequential_music (l);
+               Sequential_music * seq = new Sequential_music (SCM_EOL);
+               seq->set_mus_property ("elements", l);
+
+               Context_specced_music * sp = new Context_specced_music (SCM_EOL);
+               sp->set_mus_property ("element", seq->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
 
-               Context_specced_music * sp = new Context_specced_music (seq);
                $$ =sp ;
-               sp-> set_mus_property("context-type", ly_str02scm("Staff"));
+               sp-> set_mus_property ("context-type", ly_str02scm ("Staff"));
        }
-       | TIME_T bare_unsigned '/' bare_unsigned ';' {
-               Music * p = new Music;
-               p->set_mus_property ("symbol",
-                       ly_symbol2scm ( "timeSignatureFraction"));
-               p->set_mus_property ("type",
-                       Property_iterator::constructor_cxx_function);
+       | TIME_T fraction  {
+               Music * p1 = set_property_music (ly_symbol2scm ( "timeSignatureFraction"), $2);
 
-               p->set_mus_property ("value", gh_cons (gh_int2scm ($2),
-                                                       gh_int2scm ($4)));
+  int l = gh_scm2int (ly_car ($2));
+  int o = gh_scm2int (ly_cdr ($2));
+  
+  Moment one_beat = Moment (1)/Moment (o);
+  Moment len = Moment (l) * one_beat;
+
+
+               Music *p2 = set_property_music (ly_symbol2scm ("measureLength"), len.smobbed_copy ());
+               Music *p3 = set_property_music (ly_symbol2scm ("beatLength"), one_beat.smobbed_copy ());
+
+               SCM list = scm_list_n (p1->self_scm (), p2->self_scm (), p3->self_scm(), SCM_UNDEFINED);
+               Sequential_music *seq = new Sequential_music (SCM_EOL);
+               seq->set_mus_property ("elements", list);
+               
+
+               Context_specced_music * sp = new Context_specced_music (SCM_EOL);
+               sp->set_mus_property ("element", seq->self_scm ());
+
+               
+
+               scm_gc_unprotect_object (p3->self_scm ());
+               scm_gc_unprotect_object (p2->self_scm ());
+               scm_gc_unprotect_object (p1->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
+
+               $$ = sp;
+
+/*
+ TODO: should make alias TimingContext for Score
+*/
 
-               Context_specced_music * sp = new Context_specced_music (p);
-               $$ =sp ;
                sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
        }
        ;
 
 command_req:
        shorthand_command_req   { $$ = $1; }
-       | verbose_command_req semicolon { $$ = $1; }
+       | verbose_command_req   { $$ = $1; }
        ;
 
 shorthand_command_req:
@@ -996,56 +1217,57 @@ shorthand_command_req:
        | hyphen_req {
                $$ = $1;
        }
-       | '|'                           {
-               $$ = new Barcheck_req;
-       }
        | '~'   {
                $$ = new Tie_req;
        }
        | '['           {
                Span_req*b= new Span_req;
-               b->set_span_dir(START);
+               b->set_span_dir (START);
                b->set_mus_property ("span-type", ly_str02scm ("beam"));
                $$ =b;
+
+
+               THIS->last_beam_start_ = b->self_scm ();
        }
        | ']'           {
                Span_req*b= new Span_req;
-               b->set_span_dir( STOP);
+               b->set_span_dir ( STOP);
                b->set_mus_property ("span-type", ly_str02scm ("beam"));
                $$ = b;
        }
        | BREATHE {
                $$ = new Breathing_sign_req;
        }
+       | E_TILDE {
+               $$ = new Porrectus_req;
+       }
        ;
 
-
 verbose_command_req:
-       COMMANDSPANREQUEST bare_int STRING {
+       COMMANDSPANREQUEST bare_int STRING { /*TODO: junkme */
                Span_req * sp_p = new Span_req;
-               sp_p-> set_span_dir ( Direction($2));
+               sp_p-> set_span_dir ( Direction ($2));
                sp_p->set_mus_property ("span-type",$3);
                sp_p->set_spot (THIS->here_input ());
                $$ = sp_p;
        }
-       | MARK  {
+       | MARK DEFAULT  {
                Mark_req * m = new Mark_req;
                $$ = m;
        }
-       | MARK STRING {
+       | MARK scalar {
                Mark_req *m = new Mark_req;
                m->set_mus_property ("label", $2);
                $$ = m;
 
        }
-       | MARK bare_unsigned {
-               Mark_req *m = new Mark_req;
-               m->set_mus_property ("label",  gh_int2scm ($2));
-               $$ = m;
-       }
-       | PENALTY bare_int      {
+       | PENALTY SCM_T         {
                Break_req * b = new Break_req;
-               b->set_mus_property ("penalty", gh_double2scm ( $2 / 100.0));
+               SCM s = $2;
+               if (!gh_number_p (s))
+                       s  =gh_int2scm (0);
+
+               b->set_mus_property ("penalty", s);
                b->set_spot (THIS->here_input ());
                $$ = b;
        }
@@ -1058,7 +1280,7 @@ verbose_command_req:
        | tempo_request {
                $$ = $1;
        }
-       | KEY {
+       | KEY DEFAULT {
                Key_change_req *key_p= new Key_change_req;
                $$ = key_p;
        }
@@ -1066,7 +1288,7 @@ verbose_command_req:
                Key_change_req *key_p= new Key_change_req;
                
                key_p->set_mus_property ("pitch-alist", $3);
-               ((Music* )key_p)->transpose (* unsmob_pitch ($2));
+               ((Music*)key_p)->transpose (* unsmob_pitch ($2));
                $$ = key_p; 
        }
        ;
@@ -1092,7 +1314,7 @@ request_that_take_dir:
        gen_text_def
        | verbose_request
        | script_abbreviation {
-               SCM s = THIS->lexer_p_->lookup_identifier ("dash-" + ly_scm2string ($1));
+               SCM s = THIS->lexer_p_->lookup_identifier ("dash" + ly_scm2string ($1));
                Articulation_req *a = new Articulation_req;
                if (gh_string_p (s))
                        a->set_mus_property ("articulation-type", s);
@@ -1121,41 +1343,44 @@ verbose_request:
                        TODO: junkme, use text-type == dynamic
                */
                Text_script_req *d = new Text_script_req;
-               d->set_mus_property ("text-type" , ly_symbol2scm ("dynamic"));
+               SCM dyn = ly_symbol2scm ("dynamic");
+               d->set_mus_property ("text-type" , dyn);
                d->set_mus_property ("text", $2);
                d->set_spot (THIS->here_input ());
                $$ = d;
        }
-       | TEXTSCRIPT embedded_scm {
-               Text_script_req *t = new Text_script_req;
-               t->set_mus_property ("text", $2);
-               t->set_spot (THIS->here_input ());
-               $$ = t;
-       }
        | SPANREQUEST bare_int STRING {
                Span_req * sp_p = new Span_req;
-               sp_p->set_span_dir( Direction($2));
+               sp_p->set_span_dir ( Direction ($2));
                sp_p->set_mus_property ("span-type", $3);
                sp_p->set_spot (THIS->here_input ());
                $$ = sp_p;
        }
-       | tremolo_type  {
-               Tremolo_req* a = new Tremolo_req;
-               a->set_spot (THIS->here_input ());
-               a->set_mus_property ("tremolo-type", gh_int2scm ($1));
-               $$ = a;
-       }
+       | tremolo_type  {
+               Tremolo_req* a = new Tremolo_req;
+               a->set_spot (THIS->here_input ());
+               a->set_mus_property ("tremolo-type", gh_int2scm ($1));
+               $$ = a;
+        }
        | SCRIPT STRING         { 
                Articulation_req * a = new Articulation_req;
                a->set_mus_property ("articulation-type", $2);
                a->set_spot (THIS->here_input ());
                $$ = a;
        }
+       /*
+duh, junk this syntax from the parser, if possible. 
+       */
        | ARPEGGIO {
                Arpeggio_req *a = new Arpeggio_req;
                a->set_spot (THIS->here_input ());
                $$ = a;
        }
+       | GLISSANDO {
+               Glissando_req *g = new Glissando_req;
+               g->set_spot /* No pun intended */ (THIS->here_input ());
+               $$ = g;
+       }       
        ;
 
 sup_quotes:
@@ -1176,7 +1401,7 @@ sub_quotes:
        }
        ;
 
-steno_musical_pitch:
+steno_pitch:
        NOTENAME_PITCH  {
                $$ = $1;
        }
@@ -1216,24 +1441,31 @@ steno_tonic_pitch:
        }
        ;
 
-musical_pitch:
-       steno_musical_pitch {
+pitch:
+       steno_pitch {
                $$ = $1;
        }
-       | MUSICAL_PITCH embedded_scm {
-               if (!unsmob_pitch ($2))
+       | explicit_pitch {
+               $$ = $1;
+       }
+       ;
+
+explicit_pitch:
+       PITCH embedded_scm {
+               $$ = $2;
+               if (!unsmob_pitch ($2)) {
                        THIS->parser_error (_f ("Expecting musical-pitch value", 3));
-                Pitch m;
-               $$ = m.smobbed_copy ();
+                        $$ = Pitch ().smobbed_copy ();
+               }
        }
        ;
 
-explicit_duration:
+verbose_duration:
        DURATION embedded_scm   {
                $$ = $2;
                if (!unsmob_duration ($2))
                {
-                       THIS->parser_error (_("Must have duration object"));
+                       THIS->parser_error (_ ("Must have duration object"));
                        $$ = Duration ().smobbed_copy ();
                }
        }
@@ -1265,7 +1497,12 @@ close_request_parens:
        '('     {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm( "slur"));
+               s->set_mus_property ("span-type", ly_str02scm ( "slur"));
+       }
+       | E_OPEN        {
+               Span_req* s= new Span_req;
+               $$ = s;
+               s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
        }
        | E_SMALLER {
                Span_req*s =new Span_req;
@@ -1297,7 +1534,12 @@ open_request_parens:
        | ')'   {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm( "slur"));
+               s->set_mus_property ("span-type", ly_str02scm ( "slur"));
+       }
+       | E_CLOSE       {
+               Span_req* s= new Span_req;
+               $$ = s;
+               s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
        }
        ;
 
@@ -1317,9 +1559,9 @@ gen_text_def:
        | DIGIT {
                String ds = to_str ($1);
                Text_script_req* t = new Text_script_req;
-
-               t->set_mus_property ("text",  ly_str02scm (ds.ch_C()));
-               t->set_mus_property ("text-type" , ly_symbol2scm ("finger"));
+               SCM finger = ly_symbol2scm ("finger");
+               t->set_mus_property ("text",  ly_str02scm (ds.ch_C ()));
+               t->set_mus_property ("text-type" , finger);
                t->set_spot (THIS->here_input ());
                $$ = t;
        }
@@ -1327,26 +1569,25 @@ gen_text_def:
 
 script_abbreviation:
        '^'             {
-               $$ = gh_str02scm  ("hat");
+               $$ = gh_str02scm ("Hat");
        }
        | '+'           {
-               $$ = gh_str02scm("plus");
+               $$ = gh_str02scm ("Plus");
        }
        | '-'           {
-               $$ = gh_str02scm ("dash");
+               $$ = gh_str02scm ("Dash");
        }
        | '|'           {
-               $$ = gh_str02scm ("bar");
+               $$ = gh_str02scm ("Bar");
        }
        | '>'           {
-               $$ = gh_str02scm ("larger");
+               $$ = gh_str02scm ("Larger");
        }
        | '.'           {
-               $$ = gh_str02scm ("dot");
+               $$ = gh_str02scm ("Dot");
        }
        ;
 
-
 script_dir:
        '_'     { $$ = DOWN; }
        | '^'   { $$ = UP; }
@@ -1362,37 +1603,38 @@ pre_requests:
        }
        ;
 
-absolute_musical_pitch:
-       steno_musical_pitch     {
+absolute_pitch:
+       steno_pitch     {
                $$ = $1;
        }
        ;
 
 duration_length:
-       steno_duration {
+       multiplied_duration {
                $$ = $1;
        }
-       | duration_length '*' bare_unsigned {
-               $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
-       }
-       | duration_length '/' bare_unsigned {
-               $$ = unsmob_duration ($$)->compressed (Moment (1,$3)).smobbed_copy ();
-       }
-       ;
-
-entered_notemode_duration:
-       steno_duration  {
-               THIS->set_last_duration (unsmob_duration ($1));
-       }
+       | verbose_duration {
+               $$ = $1;
+       }       
        ;
 
 optional_notemode_duration:
        {
-               $$ = THIS->default_duration_.smobbed_copy ();
+               Duration dd = THIS->default_duration_;
+               $$ = dd.smobbed_copy ();
+
+               THIS->beam_check ($$);
        }
-       | entered_notemode_duration {
+       | multiplied_duration   {
                $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
+
+               THIS->beam_check ($$);
        }
+       | verbose_duration {
+               $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
+       }       
        ;
 
 steno_duration:
@@ -1408,7 +1650,31 @@ steno_duration:
        | DURATION_IDENTIFIER dots      {
                Duration *d =unsmob_duration ($1);
                Duration k (d->duration_log (),d->dot_count () + $2);
-               $$ = k.smobbed_copy ();         
+               $$ = k.smobbed_copy ();
+       }
+       ;
+
+
+
+
+multiplied_duration:
+       steno_duration {
+               $$ = $1;
+       }
+       | multiplied_duration '*' bare_unsigned {
+               $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
+       }
+       | multiplied_duration '*' FRACTION {
+               Rational  m (gh_scm2int (ly_car ($3)), gh_scm2int (ly_cdr ($3)));
+
+               $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
+       }
+       ;
+
+fraction:
+       FRACTION { $$ = $1; }
+       | UNSIGNED '/' UNSIGNED {
+               $$ = gh_cons (gh_int2scm ($1), gh_int2scm ($3));
        }
        ;
 
@@ -1434,8 +1700,60 @@ tremolo_type:
        ;
 
 
+bass_number:
+       DIGIT
+       | UNSIGNED 
+       ;
+
+bass_mod:
+       '-'     { $$ = -1; }
+       | '+'   { $$ = 1; } 
+       | '!'   { $$ = 0; }
+       ;
+
+bass_figure:
+       bass_number  {
+               Pitch p ;
+               p .notename_i_ = $1 - 1;
+               p.normalise();
+               
+               Note_req * nr = new Note_req;
+               $$ = nr->self_scm ();
+               nr->set_mus_property ("pitch", p.smobbed_copy ());
+               scm_gc_unprotect_object ($$);
+       }
+       | bass_figure bass_mod {
+               if ($2) { 
+                       SCM sp = unsmob_music ($1)->get_mus_property ("pitch");
+                       unsmob_pitch (sp)->alteration_i_ += $2;
+               } else {
+                       unsmob_music ($1)->set_mus_property ("force-accidental", SCM_BOOL_T);
+               }
+       }
+       ;
+
+figure_list:
+       /**/            {
+               $$ = SCM_EOL;
+       }
+       | figure_list bass_figure {
+               $$ = gh_cons ($2, $1); 
+       }
+       ;
+
+figure_spec:
+       FIGURE_OPEN figure_list FIGURE_CLOSE {
+               Music * m = new Request_chord (SCM_EOL);
+               $2 = scm_reverse_x ($2, SCM_EOL);
+               m->set_mus_property ("elements",  $2);
+               $$ = m->self_scm ();
+       }
+       ;
+
 simple_element:
-       musical_pitch exclamations questions optional_notemode_duration {
+       pitch exclamations questions optional_notemode_duration {
+
+               Input i = THIS->pop_spot ();
                if (!THIS->lexer_p_->note_state_b ())
                        THIS->parser_error (_ ("Have to be in Note mode for notes"));
 
@@ -1449,41 +1767,49 @@ simple_element:
                if ($2 % 2 || $3 % 2)
                        n->set_mus_property ("force-accidental", SCM_BOOL_T);
 
-               Simultaneous_music*v = new Request_chord (gh_list (n->self_scm (), SCM_UNDEFINED));
+               Simultaneous_music*v = new Request_chord (SCM_EOL);
+               v->set_mus_property ("elements", scm_list_n (n->self_scm (), SCM_UNDEFINED));
                
-/*
-FIXME
-*/
-               v->set_spot (THIS->here_input ());
-               n->set_spot (THIS->here_input ());
-
+               v->set_spot (i);
+               n->set_spot (i);
                $$ = v;
        }
-       | RESTNAME optional_notemode_duration           {
-
-               SCM e = SCM_UNDEFINED;
-                 if (ly_scm2string ($1) =="s")
-                   { /* Space */
-                     Skip_req * skip_p = new Skip_req;
-                     skip_p->set_mus_property ("duration" ,$2);
-
-                     skip_p->set_spot (THIS->here_input());
+       | figure_spec optional_notemode_duration {
+               Music * m = unsmob_music ($1);
+               Input i = THIS->pop_spot (); 
+               m->set_spot (i);
+               for (SCM s = m->get_mus_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
+                       {
+                               unsmob_music (ly_car (s))->set_mus_property ("duration", $2);
+                       }
+               $$ = m;
+       }       
+       | RESTNAME optional_notemode_duration           {
+
+               Input i = THIS->pop_spot ();
+               SCM e = SCM_UNDEFINED;
+               if (ly_scm2string ($1) =="s") {
+                       /* Space */
+                       Skip_req * skip_p = new Skip_req;
+                       skip_p->set_mus_property ("duration" ,$2);
+                       skip_p->set_spot (i);
                        e = skip_p->self_scm ();
-                   }
-                 else
-                   {
-                     Rest_req * rest_req_p = new Rest_req;
-                     rest_req_p->set_mus_property ("duration", $2);
-                     rest_req_p->set_spot (THIS->here_input());
+                 }
+                 else {
+                       Rest_req * rest_req_p = new Rest_req;
+                       rest_req_p->set_mus_property ("duration", $2);
+                       rest_req_p->set_spot (i);
                        e = rest_req_p->self_scm ();
                    }
-                 Simultaneous_music* velt_p = new Request_chord (gh_list (e,SCM_UNDEFINED));
-                 velt_p->set_spot (THIS->here_input());
-
+               Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
+               velt_p-> set_mus_property ("elements", scm_list_n (e,SCM_UNDEFINED));
+               velt_p->set_spot (i);
 
-                 $$ = velt_p;
+               $$ = velt_p;
        }
-       | MEASURES optional_notemode_duration   {
+       | MULTI_MEASURE_REST optional_notemode_duration         {
+               Input i = THIS->pop_spot ();
+
                Skip_req * sk = new Skip_req;
                sk->set_mus_property ("duration", $2);
                Span_req *sp1 = new Span_req;
@@ -1494,37 +1820,33 @@ FIXME
                sp1->set_mus_property ("span-type", r);
                sp2->set_mus_property ("span-type", r);
 
-               Request_chord * rqc1 = new Request_chord (gh_list (sp1->self_scm (), SCM_UNDEFINED));
-               Request_chord * rqc2 = new Request_chord (gh_list (sk->self_scm (), SCM_UNDEFINED));;
-               Request_chord * rqc3 = new Request_chord(gh_list (sp2->self_scm (), SCM_UNDEFINED));;
+               Request_chord * rqc1 = new Request_chord (SCM_EOL);
+               rqc1->set_mus_property ("elements", scm_list_n (sp1->self_scm (), SCM_UNDEFINED));
+               Request_chord * rqc2 = new Request_chord (SCM_EOL);
+               rqc2->set_mus_property ("elements", scm_list_n (sk->self_scm (), SCM_UNDEFINED));;
+               Request_chord * rqc3 = new Request_chord (SCM_EOL);
+               rqc3->set_mus_property ("elements", scm_list_n (sp2->self_scm (), SCM_UNDEFINED));;
 
-               SCM ms = gh_list (rqc1->self_scm (), rqc2->self_scm (), rqc3->self_scm (), SCM_UNDEFINED);
+               SCM ms = scm_list_n (rqc1->self_scm (), rqc2->self_scm (), rqc3->self_scm (), SCM_UNDEFINED);
 
-               $$ = new Sequential_music (ms);
+               $$ = new Sequential_music (SCM_EOL);
+               $$->set_mus_property ("elements", ms);
        }
-       | STRING { 
-               THIS->remember_spot ();
-       } 
-       /* cont */
-       optional_notemode_duration      {
-               if (!THIS->lexer_p_->lyric_state_b ()) {
-                       THIS->pop_spot ().error (_ ("Have to be in Lyric mode for lyrics"));
-                       THIS->error_level_i_  = 1;
-                       THIS->parser_error (_ ("Giving up"));
-               } 
-               else
-                       THIS->pop_spot ();
+       | STRING optional_notemode_duration     {
+               Input i = THIS->pop_spot ();
+
                Lyric_req* lreq_p = new Lyric_req;
                 lreq_p->set_mus_property ("text", $1);
-               lreq_p->set_mus_property ("duration",$3);
-               lreq_p->set_spot (THIS->here_input());
-               Simultaneous_music* velt_p = new Request_chord (gh_list (lreq_p->self_scm (), SCM_UNDEFINED));
-
+               lreq_p->set_mus_property ("duration",$2);
+               lreq_p->set_spot (i);
+               Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
+               velt_p->set_mus_property ("elements", scm_list_n (lreq_p->self_scm (), SCM_UNDEFINED));
 
                $$= velt_p;
-
        }
        | chord {
+               Input i = THIS->pop_spot ();
+
                if (!THIS->lexer_p_->chord_state_b ())
                        THIS->parser_error (_ ("Have to be in Chord mode for chords"));
                $$ = $1;
@@ -1589,10 +1911,11 @@ chord_step:
                $$ = gh_cons ($1, SCM_EOL);
        }
        | CHORDMODIFIER_PITCH {
-               $$ = gh_cons ($1, SCM_EOL);
+               $$ = gh_cons (unsmob_pitch ($1)->smobbed_copy (), SCM_EOL);
        }
        | CHORDMODIFIER_PITCH chord_note { /* Ugh. */
-               $$ = gh_list ($1, $2, SCM_UNDEFINED);
+               $$ = scm_list_n (unsmob_pitch ($1)->smobbed_copy (),
+                       $2, SCM_UNDEFINED);
        }
        ;
 
@@ -1628,76 +1951,75 @@ chord_note:
        UTILITIES
  */
 number_expression:
-       bare_number {
-               $$ = $1;
+       number_expression '+' number_term {
+               $$ = scm_sum ($1, $3);
        }
-       | '-'  number_expression %prec UNARY_MINUS {
-               $$ = scm_difference ($2, SCM_UNDEFINED);
+       | number_expression '-' number_term {
+               $$ = scm_difference ($1, $3);
        }
-       | number_expression '*' number_expression {
+       | number_term 
+       ;
+
+number_term:
+       number_factor {
+               $$ = $1;
+       }
+       | number_factor '*' number_factor {
                $$ = scm_product ($1, $3);
        }
-       | number_expression '/' number_expression {
+       | number_factor '/' number_factor {
                $$ = scm_divide ($1, $3);
        }
-       | number_expression '+' number_expression {
-               $$ = scm_sum ($1, $3);
-       }
-       | number_expression '-' number_expression {
-               $$ = scm_difference ($1, $3);
-       }
-       | '(' number_expression ')'     {
+       ;
+
+number_factor:
+       '(' number_expression ')'       {
                $$ = $2;
        }
+       | '-'  number_factor { /* %prec UNARY_MINUS */
+               $$ = scm_difference ($2, SCM_UNDEFINED);
+       }
+       | bare_number
        ;
 
+
 bare_number:
        UNSIGNED        {
                $$ = gh_int2scm ($1);
        }
-       | DIGIT         {
-               $$ = gh_int2scm ($1);
-       }
        | REAL          {
-               $$ = gh_double2scm ($1);
+               $$ = $1;
        }
        | NUMBER_IDENTIFIER             {
                $$ = $1;
        }
        | REAL CM_T     {
-               $$ = gh_double2scm ($1 CM);
+               $$ = gh_double2scm (gh_scm2double ($1) CM );
        }
        | REAL PT_T     {
-               $$ = gh_double2scm ($1 PT);
+               $$ = gh_double2scm (gh_scm2double ($1) PT);
        }
        | REAL IN_T     {
-               $$ = gh_double2scm ($1 INCH);
+               $$ = gh_double2scm (gh_scm2double ($1) INCH);
        }
        | REAL MM_T     {
-               $$ = gh_double2scm ($1 MM);
+               $$ = gh_double2scm (gh_scm2double ($1) MM);
        }
        | REAL CHAR_T   {
-               $$ = gh_double2scm ($1 CHAR);
+               $$ = gh_double2scm (gh_scm2double ($1) CHAR);
        }
        ;
 
 
 bare_unsigned:
-       bare_number {
-               if (scm_integer_p ($1) == SCM_BOOL_T) {
-                       $$ = gh_scm2int ($1);
-
-               } else {
-                       THIS->parser_error (_("need integer number arg"));
-                       $$ = 0;
-               }
-               if ($$ < 0) {
-                       THIS->parser_error (_("Must be positive integer"));
-                       $$ = -$$;
-                       }
-
+       UNSIGNED {
+                       $$ = $1;
+       }
+       | DIGIT {
+               $$ = $1;
        }
        ;
+
 bare_int:
        bare_number {
                if (scm_integer_p ($1) == SCM_BOOL_T)
@@ -1706,7 +2028,7 @@ bare_int:
                        $$ = k;
                } else
                {
-                       THIS->parser_error (_("need integer number arg"));
+                       THIS->parser_error (_ ("need integer number arg"));
                        $$ = 0;
                }
        }
@@ -1724,7 +2046,7 @@ string:
                $$ = $1;
        }
        | string '+' string {
-               $$ = scm_string_append (scm_listify ($1, $3, SCM_UNDEFINED));
+               $$ = scm_string_append (scm_list_n ($1, $3, SCM_UNDEFINED));
        }
        ;
 
@@ -1740,10 +2062,6 @@ questions:
        ;
 
 
-semicolon:
-       ';'
-       ;
-
 %%
 
 void
@@ -1765,3 +2083,24 @@ My_lily_parser::do_yyparse ()
 }
 
 
+/*
+Should make this optional?    It will also complain when you do
+
+       [s4]
+
+which is entirely legitimate.
+
+Or we can scrap it. Barchecks should detect wrong durations, and
+skipTypesetting speeds it up a lot.
+*/
+void
+My_lily_parser::beam_check (SCM dur)
+{
+  Duration *d = unsmob_duration (dur);
+  if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
+    {
+      Music * m = unsmob_music (last_beam_start_);
+      m->origin ()->warning (_("Suspect duration found following this beam"));
+    }
+  last_beam_start_ = SCM_EOL;
+}