]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
* VERSION (MY_PATCH_LEVEL): make 1.7.0
[lilypond.git] / lily / parser.yy
index 8d47fa28fd9691d08f017e7f61f43fe730516e9a..99ff6633534efbb7039a2bc11f6ff13e91075011 100644 (file)
@@ -23,8 +23,8 @@ this.
 
 */
 
-#include <ctype.h>
 #include <iostream.h>
+#include <ctype.h>
 
 #include "translator-def.hh"
 #include "lily-guile.hh"
@@ -35,7 +35,7 @@ this.
 #include "midi-def.hh"
 #include "main.hh"
 #include "file-path.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "dimensions.hh"
 #include "command-request.hh"
 #include "musical-request.hh"
@@ -45,9 +45,8 @@ this.
 #include "music-list.hh"
 #include "output-property-music-iterator.hh"
 #include "property-iterator.hh"
-#include "file-results.hh"
+#include "input-file-results.hh"
 #include "input.hh"
-#include "scope.hh"
 #include "relative-music.hh"
 #include "lyric-combine-music.hh"
 #include "transposed-music.hh"
@@ -66,7 +65,7 @@ bool
 regular_identifier_b (SCM id)
 {
   String str = ly_scm2string (id);
-  char const *s = str.ch_C() ;
+  char const *s = str.to_str0 () ;
 
   bool v = true;
   while (*s && v)
@@ -84,7 +83,7 @@ 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);
+       Property_iterator::constructor_proc);
 
        p->set_mus_property ("value", value);
        return p;
@@ -99,9 +98,9 @@ is_duration_b (int 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));
        }
 }
 
@@ -112,24 +111,27 @@ set_music_properties (Music *p, SCM a)
 
 
 // needed for bison.simple's malloc () and free ()
-#include <malloc.h>
 
-#ifndef NDEBUG
-#define YYDEBUG 1
-#endif
+// #include <malloc.h>
+#include <stdlib.h>
+
+
 
 #define YYERROR_VERBOSE 1
 
-#define YYPARSE_PARAM my_lily_parser_l
-#define YYLEX_PARAM my_lily_parser_l
+#define YYPARSE_PARAM my_lily_parser
+#define YYLEX_PARAM my_lily_parser
 #define THIS\
-       ((My_lily_parser *) my_lily_parser_l)
+       ((My_lily_parser *) my_lily_parser)
 
 #define yyerror THIS->parser_error
-#define ARRAY_SIZE(a,s)   if (a.size () != s) THIS->parser_error (_f ("Expecting %d arguments", s))
 
 %}
 
+/* We use SCMs to do strings, because it saves us the trouble of
+deleting them.  Let's hope that a stack overflow doesnt trigger a move
+of the parse stack onto the heap. */
+
 
 %union {
 
@@ -138,16 +140,11 @@ set_music_properties (Music *p, SCM a)
     String *string; // needed by the lexer as temporary scratch area.
     Music *music;
     Score *score;
-    Scope *scope;
     Scheme_hash_table *scmhash;
     Music_output_def * outputdef;
 
     Request * request;
 
-    /* We use SCMs to do strings, because it saves us the trouble of
-deleting them.  Let's hope that a stack overflow doesnt trigger a move
-of the parse stack onto the heap. */
-
     SCM scm;
 
     Tempo_req *tempo;
@@ -156,13 +153,13 @@ of the parse stack onto the heap. */
 %{
 
 int
-yylex (YYSTYPE *s,  void * v_l)
+yylex (YYSTYPE *s,  void * v)
 {
-       My_lily_parser   *pars_l = (My_lily_parser*) v_l;
-       My_lily_lexer * lex_l = pars_l->lexer_p_;
+       My_lily_parser   *pars = (My_lily_parser*) v;
+       My_lily_lexer * lex = pars->lexer_;
 
-       lex_l->lexval_l = (void*) s;
-       return lex_l->yylex ();
+       lex->lexval = (void*) s;
+       return lex->yylex ();
 }
 
 
@@ -188,13 +185,14 @@ 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 FIGURES FIGURE_OPEN FIGURE_CLOSE
+%token FIGURE_BRACKET_CLOSE FIGURE_BRACKET_OPEN
 %token GLISSANDO
 %token GRACE 
 %token HEADER
@@ -212,10 +210,10 @@ yylex (YYSTYPE *s,  void * v_l)
 %token NAME
 %token PITCHNAMES
 %token NOTES
+%token ONCE
 %token PAPER
 %token PARTIAL
 %token PENALTY
-%token PORRECTUS
 %token PROPERTY
 %token OVERRIDE SET REVERT 
 %token PT_T
@@ -240,14 +238,19 @@ yylex (YYSTYPE *s,  void * v_l)
 %token TYPE
 %token UNSET
 %token CONTEXT
+%token REST
 
 /* escaped */
 %token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE
-%token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET 
+%token E_LEFTSQUARE E_RIGHTSQUARE E_TILDE
+%token E_BACKSLASH
+%token <i> E_UNSIGNED
+%token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET  CHORD_SLASH
+%token FIGURE_SPACE
 
-%type <i>      exclamations questions dots
+%type <i>      exclamations questions dots optional_rest
 %type <i>      bass_number bass_mod
-%type <scm>    bass_figure figure_list figure_spec
+%type <scm>    br_bass_figure bass_figure figure_list figure_spec
 %token <i>     DIGIT
 %token <scm>   NOTENAME_PITCH
 %token <scm>   TONICNAME_PITCH
@@ -276,15 +279,15 @@ yylex (YYSTYPE *s,  void * v_l)
 %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 multiplied_duration
-%type <scm>  explicit_duration
+%type <scm>  verbose_duration
        
 %type <reqvec>  pre_requests post_requests
 %type <request> gen_text_def
@@ -297,9 +300,9 @@ yylex (YYSTYPE *s,  void * v_l)
 %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 <music>  property_def translator_change  simple_property_def
 %type <scm> Music_list
 %type <outputdef>  music_output_def_body
 %type <request> shorthand_command_req
@@ -307,6 +310,7 @@ yylex (YYSTYPE *s,  void * v_l)
 %type <music> command_req verbose_command_req
 %type <request>        extender_req
 %type <request> hyphen_req
+%type <request> string_request
 %type <scm>    string bare_number number_expression number_term number_factor 
 
 %type <score>  score_block score_body
@@ -331,33 +335,33 @@ lilypond: /* empty */
        | lilypond toplevel_expression {}
        | lilypond assignment  { }
        | lilypond error {
-               THIS->error_level_i_  = 1;
+               THIS->error_level_  = 1;
        }
        | lilypond INVALID      {
-               THIS->error_level_i_  = 1;
+               THIS->error_level_  = 1;
        }
        ;
 
 toplevel_expression:
        notenames_block                 {
-               THIS->lexer_p_->pitchname_tab_ =  $1;
+               THIS->lexer_->pitchname_tab_ =  $1;
        }
        | chordmodifiers_block                  {
-               THIS->lexer_p_->chordmodifier_tab_  = $1;
+               THIS->lexer_->chordmodifier_tab_  = $1;
        }
        | lilypond_header {
-               if (global_header_p)
-                       scm_gc_unprotect_object (global_header_p->self_scm ());
-               global_header_p = $1;
+               if (THIS->input_file_->header_)
+                       scm_gc_unprotect_object (THIS->input_file_->header_->self_scm ());
+               THIS->input_file_->header_ = $1;
        }
        | score_block {
-               score_global_array.push ($1);
+               THIS->input_file_->scores_.push ($1);
        }
        | output_def {
                if (dynamic_cast<Paper_def*> ($1))
-                       THIS->lexer_p_->set_identifier ("$defaultpaper", $1->self_scm ());
+                       THIS->lexer_->set_identifier (scm_makfrom0str ("$defaultpaper"), $1->self_scm ());
                else if (dynamic_cast<Midi_def*> ($1))
-                       THIS->lexer_p_->set_identifier ("$defaultmidi", $1->self_scm ());
+                       THIS->lexer_->set_identifier (scm_makfrom0str ("$defaultmidi"), $1->self_scm ());
        }
        | embedded_scm {
                // junk value
@@ -383,12 +387,12 @@ notenames_body:
          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);
          }
 
          $$ = tab;
@@ -398,9 +402,7 @@ notenames_body:
 lilypond_header_body:
        {
                $$ = new Scheme_hash_table;
-               
-               Scope *sc = new Scope ($$);
-               THIS->lexer_p_-> scope_l_arr_.push (sc);
+               THIS->lexer_-> scopes_.push ($$);
        }
        | lilypond_header_body assignment  { 
 
@@ -410,7 +412,7 @@ lilypond_header_body:
 lilypond_header:
        HEADER '{' lilypond_header_body '}'     {
                $$ = $3;
-               delete THIS->lexer_p_-> scope_l_arr_.pop ();
+               THIS->lexer_->scopes_.pop ();
        }
        ;
 
@@ -431,10 +433,10 @@ assignment:
 
                if (! regular_identifier_b ($1))
                {
-                       ip.warning (_ ("Identifier should have  alphabetic characters only"));
+                       ip.warning (_ ("Identifier should have alphabetic characters only"));
                }
 
-               THIS->lexer_p_->set_identifier (ly_scm2string ($1), $4);
+               THIS->lexer_->set_identifier ($1, $4);
 
 /*
  TODO: devise standard for protection in parser.
@@ -468,7 +470,7 @@ identifier_init:
                $$ = $1->self_scm ();
                scm_gc_unprotect_object ($$);
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
        }
        | number_expression {
@@ -507,6 +509,10 @@ translator_spec_body:
                unsmob_translator_def ($$)
                        ->add_push_property (scm_string_to_symbol ($2), $4, $6);
        }
+       | translator_spec_body STRING SET embedded_scm '=' embedded_scm {
+               unsmob_translator_def ($$)
+                       ->add_push_property (scm_string_to_symbol ($2), $4, $6);
+       }
        | translator_spec_body STRING REVERT embedded_scm  {
          unsmob_translator_def ($$)->add_pop_property (
                scm_string_to_symbol ($2), $4);
@@ -519,13 +525,13 @@ translator_spec_body:
        }
        | translator_spec_body ALIAS STRING  {
                Translator_def*td = unsmob_translator_def ($$);
-               td->type_aliases_ = gh_cons ($3, td->type_aliases_);
+               td->type_aliases_ = scm_cons ($3, td->type_aliases_);
        }
-       | translator_spec_body ELEMENTDESCRIPTIONS embedded_scm {
-               for (SCM p = $3; gh_pair_p (p); p = gh_cdr (p))
-                       unsmob_translator_def ($$)
-                       ->add_property_assign (scm_symbol_to_string (gh_caar (p)), gh_cdar (p));
-
+       | translator_spec_body 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);
@@ -551,10 +557,10 @@ score_block:
        /*cont*/ '{' score_body '}'     {
                THIS->pop_spot ();
                $$ = $4;
-               if (!$$->def_p_arr_.size ())
+               if (!$$->defs_.size ())
                {
                  Music_output_def *id =
-                       unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
+                       unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"));
                  $$->add_output (id ? id->clone () :  new Paper_def );
                }
        }
@@ -567,7 +573,15 @@ score_body:
                $$->set_spot (THIS->here_input ());
                SCM m = $1->self_scm ();
                scm_gc_unprotect_object (m);
+
+               /*
+                       guh.
+               */
+               SCM check_funcs = scm_c_eval_string ("toplevel-music-functions");
+               for (; gh_pair_p (check_funcs); check_funcs = gh_cdr (check_funcs))
+                       m = gh_call1 (gh_car (check_funcs), m);
                $$->music_ = m;
+
        }
        | SCORE_IDENTIFIER {
                $$ = new Score (*unsmob_score ($1));
@@ -575,7 +589,7 @@ score_body:
        }
        | score_body lilypond_header    {
                scm_gc_unprotect_object ($2->self_scm ()); 
-               $$->header_p_ = $2;
+               $$->header_ = $2;
        }
        | score_body output_def {
                $$->add_output ($2);
@@ -592,13 +606,13 @@ score_body:
 output_def:
        music_output_def_body '}' {
                $$ = $1;
-               THIS-> lexer_p_-> scope_l_arr_.pop ();
+               THIS-> lexer_-> scopes_.pop ();
        }
        ;
 
 music_output_def_body:
        MIDI '{'    {
-          Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultmidi"));
+          Music_output_def *id = unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultmidi"));
 
                
         Midi_def* p =0;
@@ -608,29 +622,29 @@ music_output_def_body:
                p = new Midi_def;
 
         $$ = p;
-        THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
+        THIS->lexer_->scopes_.push (p->variable_tab_);
        }
        | PAPER '{'     {
-               Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
+               Music_output_def *id = unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"));
                  Paper_def *p = 0;
                if (id)
                        p = dynamic_cast<Paper_def*> (id->clone ());
                else
                        p = new Paper_def;
-               THIS-> lexer_p_-> scope_l_arr_.push (p->scope_p_);
+               THIS-> lexer_-> scopes_.push (p->variable_tab_);
                $$ = p;
        }
        | PAPER '{' MUSIC_OUTPUT_DEF_IDENTIFIER         {
                Music_output_def *p = unsmob_music_output_def ($3);
                p = p->clone ();
-               THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
+               THIS->lexer_->scopes_.push (p->variable_tab_);
                $$ = p;
        }
        | MIDI '{' MUSIC_OUTPUT_DEF_IDENTIFIER  {
                Music_output_def *p = unsmob_music_output_def ($3);
                p = p->clone ();
 
-               THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
+               THIS->lexer_->scopes_.push (p->variable_tab_);
                $$ = p;
        }
        | music_output_def_body assignment  {
@@ -649,7 +663,9 @@ music_output_def_body:
                */
                int m = gh_scm2int ( $2->get_mus_property ("metronome-count"));
                Duration *d = unsmob_duration ($2->get_mus_property ("duration"));
-               dynamic_cast<Midi_def*> ($$)->set_tempo (d->length_mom (), m);
+               Midi_def * md = dynamic_cast<Midi_def*> ($$);
+               if (md)
+                       md->set_tempo (d->length_mom (), m);
        }
        | music_output_def_body error {
 
@@ -664,15 +680,22 @@ tempo_request:
        }
        ;
 
+/*
+The representation of a  list is the
+
+  (LIST . LAST-CONS)
+
+ to have  efficient append.
+*/
 Music_list: /* empty */ {
-               $$ = gh_cons (SCM_EOL, SCM_EOL);
+               $$ = scm_cons (SCM_EOL, SCM_EOL);
        }
        | Music_list Music {
                SCM s = $$;
-               SCM c = gh_cons ($2->self_scm (), SCM_EOL);
+               SCM c = scm_cons ($2->self_scm (), SCM_EOL);
                scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
-               if (gh_pair_p (gh_cdr (s)))
-                       gh_set_cdr_x (gh_cdr (s), c); /* append */
+               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 */ 
@@ -689,77 +712,83 @@ 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
        {
-               Music_sequence* alts = dynamic_cast <Music_sequence*> ($5);
-               if (alts && $3 < alts->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 ("body", beg->self_scm ());
+                       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));
 
-               if (alts)
-                       {
-                       alts->truncate (times);
-                       r-> set_mus_property ("alternatives", alts->self_scm ());
-                       scm_gc_unprotect_object (alts->self_scm ());  
-                       }
+               r-> set_mus_property ("elements",alts);
                SCM func = scm_primitive_eval (ly_symbol2scm ("repeat-name-to-ctor"));
                SCM result = gh_call1 (func, $2);
 
+               if (gh_equal_p ($2, scm_makfrom0str ("tremolo")))
+               {
+               /*
+               we can not get durations and other stuff correct down the line, so we have to
+               add to the duration log here.
+               */
+                       SCM func = scm_primitive_eval (ly_symbol2scm ("shift-duration-log"));
+                       if (($3 % 3) == 0)
+                         gh_call3 (func, r->self_scm (), gh_int2scm(-intlog2 ($3*2/3)),gh_int2scm(1));
+                       else
+                         gh_call3 (func, r->self_scm (), gh_int2scm(-intlog2 ($3)), gh_int2scm(0));
+               }
+
                set_music_properties (r, result);
 
                r->set_spot (*$4->origin ());
-               $$ = r;
-       }
-       ;
 
-Music_sequence: '{' Music_list '}'     {
-               $$ = new Music_sequence (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
+               $$ = r;
        }
        ;
 
 Sequential_music:
        SEQUENTIAL '{' Music_list '}'           {
                $$ = new Sequential_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($3));
+               $$->set_mus_property ("elements", ly_car ($3));
+               $$->set_spot(THIS->here_input());
        }
        | '{' Music_list '}'            {
                $$ = new Sequential_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
+               $$->set_mus_property ("elements", ly_car ($2));
+               $$->set_spot(THIS->here_input());
        }
        ;
 
 Simultaneous_music:
        SIMULTANEOUS '{' Music_list '}'{
                $$ = new Simultaneous_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($3));
+               $$->set_mus_property ("elements", ly_car ($3));
+               $$->set_spot(THIS->here_input());
 
        }
        | '<' Music_list '>'    {
                $$ = new Simultaneous_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
+               $$->set_mus_property ("elements", ly_car ($2));
+               $$->set_spot(THIS->here_input());
        }
        ;
 
@@ -771,10 +800,10 @@ Simple_music:
                {
                        THIS->parser_error (_ ("Second argument must be a symbol")); 
                }
-               /*hould check # args */
+               /* Should 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 one argument"));
                }
 
                Music *m = new Music (SCM_EOL);
@@ -782,12 +811,14 @@ Simple_music:
                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);
+               Output_property_music_iterator::constructor_proc);
 
                $$ = m;
        }
        | MUSIC_IDENTIFIER {
                $$ = unsmob_music ($1)->clone ();
+
+               $$->set_spot (THIS->here_input());
        }
        | property_def
        | translator_change
@@ -801,14 +832,14 @@ Composite_music:
                scm_gc_unprotect_object ($3->self_scm ());
 
                csm->set_mus_property ("context-type",$2);
-               csm->set_mus_property ("context-id", ly_str02scm (""));
+               csm->set_mus_property ("context-id", scm_makfrom0str (""));
 
                $$ = csm;
        }
        | AUTOCHANGE STRING Music       {
                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);
+               chm->set_mus_property ("iterator-ctor", Auto_change_iterator::constructor_proc);
 
                scm_gc_unprotect_object ($3->self_scm ());
                chm->set_mus_property ("what", $2); 
@@ -823,22 +854,22 @@ Composite_music:
                Sequential_music_iterator in combination with grace notes.
        */
 
-               SCM start = THIS->lexer_p_->lookup_identifier ("startGraceMusic");
-               SCM stop = THIS->lexer_p_->lookup_identifier ("stopGraceMusic");
+               SCM start = THIS->lexer_->lookup_identifier ("startGraceMusic");
+               SCM stop = THIS->lexer_->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);
+                       ms = scm_cons (stopm->self_scm (), ms);
                        scm_gc_unprotect_object (stopm->self_scm ());
                }
-               ms = gh_cons ($2->self_scm (), ms);
+               ms = scm_cons ($2->self_scm (), ms);
                scm_gc_unprotect_object ($2->self_scm());
                if (startm) {
                        startm = startm->clone ();
-                       ms = gh_cons (startm->self_scm () , ms);
+                       ms = scm_cons (startm->self_scm () , ms);
                        scm_gc_unprotect_object (startm->self_scm ());
                }
 
@@ -853,8 +884,6 @@ Composite_music:
                $$->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 (SCM_EOL);
@@ -873,7 +902,7 @@ Composite_music:
                fraction Music  
 
        {
-               int n = gh_scm2int (gh_car ($3)); int d = gh_scm2int (gh_cdr ($3));
+               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 ());
@@ -918,37 +947,39 @@ Composite_music:
                $$ = m;
        }
        | NOTES
-               { THIS->lexer_p_->push_note_state (); }
+               { THIS->lexer_->push_note_state (); }
        Music
                { $$ = $3;
-                 THIS->lexer_p_->pop_state ();
+                 THIS->lexer_->pop_state ();
                }
        | FIGURES
-               { THIS->lexer_p_->push_figuredbass_state (); }
+               { THIS->lexer_->push_figuredbass_state (); }
        Music
                {
                  Music * chm = new Untransposable_music () ;
                  chm->set_mus_property ("element", $3->self_scm ());
                  $$ = chm;
+                 scm_gc_unprotect_object ($3->self_scm());
 
-                 THIS->lexer_p_->pop_state ();
+                 THIS->lexer_->pop_state ();
        }
        | CHORDS
-               { THIS->lexer_p_->push_chord_state (); }
+               { THIS->lexer_->push_chord_state (); }
        Music
                {
                  Music * chm = new Un_relativable_music ;
                  chm->set_mus_property ("element", $3->self_scm ());
+                 scm_gc_unprotect_object ($3->self_scm());
                  $$ = chm;
 
-                 THIS->lexer_p_->pop_state ();
+                 THIS->lexer_->pop_state ();
        }
        | LYRICS
-               { THIS->lexer_p_->push_lyric_state (); }
+               { THIS->lexer_->push_lyric_state (); }
        Music
                {
                  $$ = $3;
-                 THIS->lexer_p_->pop_state ();
+                 THIS->lexer_->pop_state ();
        }
        | relative_music        { $$ = $1; }
        | re_rhythmed_music     { $$ = $1; } 
@@ -972,8 +1003,7 @@ relative_music:
 re_rhythmed_music:
        ADDLYRICS Music Music {
          Lyric_combine_music * l = new Lyric_combine_music (SCM_EOL);
-         l->set_mus_property ("music", $2->self_scm ());
-         l->set_mus_property ("lyrics", $3->self_scm ());
+         l->set_mus_property ("elements", gh_list ($2->self_scm (), $3->self_scm (), SCM_UNDEFINED));
          scm_gc_unprotect_object ($3->self_scm ());
          scm_gc_unprotect_object ($2->self_scm ());
          $$ = l;
@@ -985,13 +1015,11 @@ part_combined_music:
                Part_combine_music * p = new Part_combine_music (SCM_EOL);
 
                p->set_mus_property ("what", $2);
-               p->set_mus_property ("one", $3->self_scm ());
-               p->set_mus_property ("two", $4->self_scm ());  
+               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;
        }
        ;
@@ -1000,7 +1028,7 @@ translator_change:
        TRANSLATOR STRING '=' STRING  {
                Music * t = new Music (SCM_EOL);
                t->set_mus_property ("iterator-ctor",
-                       Change_iterator::constructor_cxx_function);
+                       Change_iterator::constructor_proc);
                t-> set_mus_property ("change-to-type", $2);
                t-> set_mus_property ("change-to-id", $4);
 
@@ -1010,6 +1038,15 @@ translator_change:
        ;
 
 property_def:
+       simple_property_def
+       | ONCE simple_property_def {
+               $$ = $2;
+               SCM e = $2->get_mus_property ("element");
+               unsmob_music (e)->set_mus_property ("once", SCM_BOOL_T);
+       }
+       ;
+
+simple_property_def:
        PROPERTY STRING '.' STRING '='  scalar {
                
                Music *t = set_property_music (scm_string_to_symbol ($4), $6);
@@ -1027,7 +1064,7 @@ property_def:
                Music *t = new Music (SCM_EOL);
 
                t->set_mus_property ("iterator-ctor",
-                       Property_unset_iterator::constructor_cxx_function);
+                       Property_unset_iterator::constructor_proc);
                t->set_mus_property ("symbol", scm_string_to_symbol ($4));
 
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
@@ -1040,12 +1077,19 @@ property_def:
                csm-> set_mus_property ("context-type", $2);
        }
        | PROPERTY STRING '.' STRING SET embedded_scm '=' embedded_scm {
+               bool autobeam
+                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
+               bool itc = internal_type_checking_global_b;
                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));
+                       Push_property_iterator::constructor_proc);
+               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
                t->set_mus_property ("pop-first", SCM_BOOL_T);
+               if (autobeam)
+                       internal_type_checking_global_b = false;
                t->set_mus_property ("grob-property", $6);
+               if (autobeam)
+                       internal_type_checking_global_b = itc;
                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 ());
@@ -1055,13 +1099,28 @@ property_def:
 
                csm-> set_mus_property ("context-type", $2);
        }
-       | PROPERTY STRING '.' STRING OVERRIDE embedded_scm '=' embedded_scm {
+       | PROPERTY STRING '.' STRING OVERRIDE
+               embedded_scm '=' embedded_scm
+       {
+               /*
+                       UGH UGH UGH UGH.
+               */
+               bool autobeam
+                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
+               bool itc = internal_type_checking_global_b;
+
                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));
+                       Push_property_iterator::constructor_proc);
+               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
+
+               if (autobeam)
+                       internal_type_checking_global_b = false;
                t->set_mus_property ("grob-property", $6);
                t->set_mus_property ("grob-value", $8);
+               if (autobeam)
+                       internal_type_checking_global_b = itc;
+
                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 ());
@@ -1070,14 +1129,23 @@ property_def:
                $$->set_spot (THIS->here_input ());
 
                csm-> set_mus_property ("context-type", $2);
+
        }
        | PROPERTY STRING '.' STRING REVERT embedded_scm {
                Music *t = new Music (SCM_EOL);
+               bool autobeam
+                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
+               bool itc = internal_type_checking_global_b;
+
                t->set_mus_property ("iterator-ctor",
-                       Pop_property_iterator::constructor_cxx_function);
-               t->set_mus_property ("symbols", scm_string_to_symbol ($4));
+                       Pop_property_iterator::constructor_proc);
+               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
+               if (autobeam)
+                       internal_type_checking_global_b = false;
                t->set_mus_property ("grob-property", $6);
-
+               if (autobeam)
+                       internal_type_checking_global_b = itc;
+       
                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 ());
@@ -1089,11 +1157,12 @@ property_def:
        }
        ;
 
+
 scalar:
-       string          { $$ = $1; }
-       | bare_int      { $$ = gh_int2scm ($1); }
-       | embedded_scm  { $$ = $1; }
-       ;
+        string          { $$ = $1; }
+        | bare_int      { $$ = gh_int2scm ($1); }
+        | embedded_scm  { $$ = $1; }
+        ;
 
 
 request_chord:
@@ -1101,15 +1170,16 @@ request_chord:
                THIS->push_spot ();
        } /*cont */ simple_element post_requests        {
                Music_sequence *l = dynamic_cast<Music_sequence*> ($3);
-               if (l) {
-                       for (int i=0; i < $1->size (); i++)
-                               l->append_music ($1->elem (i));
-                       for (int i=0; i < $4->size (); i++)
-                               l->append_music ($4->elem (i));
-                       }
-               else
-                       programming_error ("Need Sequence to add music to");
+               
+               $1->concat (*$4);
+               for (int i=0; i < $1->size (); i++) {
+                 Music * m = $1->elem (i);
+                 l->append_music (m);
+               }
                $$ = $3;
+
+               delete $1;
+               delete $4;
        }
        | command_element
        ;
@@ -1117,10 +1187,45 @@ request_chord:
 command_element:
        command_req {
                $$ = new Request_chord (SCM_EOL);
-               $$->set_mus_property ("elements", gh_cons ($1->self_scm (), SCM_EOL));
+               $$->set_mus_property ("elements", scm_cons ($1->self_scm (), SCM_EOL));
+         scm_gc_unprotect_object ($1->self_scm());
+
                $$-> set_spot (THIS->here_input ());
                $1-> set_spot (THIS->here_input ());
        }
+       | E_LEFTSQUARE {
+               Span_req *l = new Span_req;
+               l->set_span_dir (START);
+               l->set_mus_property ("span-type", scm_makfrom0str ("ligature"));
+               l->set_spot (THIS->here_input ());
+
+               $$ = new Request_chord (SCM_EOL);
+               $$->set_mus_property ("elements", scm_cons (l->self_scm (), SCM_EOL));
+         scm_gc_unprotect_object (l->self_scm());
+               $$->set_spot (THIS->here_input ());
+       }
+       | E_RIGHTSQUARE {
+               Span_req *l = new Span_req;
+               l->set_span_dir (STOP);
+               l->set_mus_property ("span-type", scm_makfrom0str ("ligature"));
+               l->set_spot (THIS->here_input ());
+
+               $$ = new Request_chord (SCM_EOL);
+               $$->set_mus_property ("elements", scm_cons (l->self_scm (), SCM_EOL));
+               $$->set_spot (THIS->here_input ());
+         scm_gc_unprotect_object (l->self_scm());
+
+       }
+       | E_BACKSLASH {
+               $$ = new Music (gh_list (scm_cons (ly_symbol2scm ("name"), ly_symbol2scm ("separator")), SCM_UNDEFINED));
+               $$->set_spot (THIS->here_input ());
+       }
+       | '|'      {
+
+               extern Music * get_barcheck();
+               $$ = get_barcheck ();
+               $$->set_spot (THIS->here_input ());
+       }
        | BAR STRING                    {
                Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
 
@@ -1131,7 +1236,7 @@ command_element:
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
-               csm->set_mus_property ("context-type", ly_str02scm ("Score"));
+               csm->set_mus_property ("context-type", scm_makfrom0str ("Timing"));
        }
        | PARTIAL duration_length       {
                Moment m = - unsmob_duration ($2)->length_mom ();
@@ -1142,17 +1247,17 @@ command_element:
                scm_gc_unprotect_object (p->self_scm ());
 
                $$ =sp ;
-               sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
+               sp-> set_mus_property ("context-type", scm_makfrom0str ("Timing"));
        }
        | 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)) {
+               for (SCM s = result ; gh_pair_p (s); s = ly_cdr (s)) {
                        Music * p = new Music (SCM_EOL);
-                       set_music_properties (p, gh_car (s));
-                       l = gh_cons (p->self_scm (), l);
+                       set_music_properties (p, ly_car (s));
+                       l = scm_cons (p->self_scm (), l);
                        scm_gc_unprotect_object (p->self_scm ());
                }
                Sequential_music * seq = new Sequential_music (SCM_EOL);
@@ -1163,22 +1268,22 @@ command_element:
                scm_gc_unprotect_object (seq->self_scm ());
 
                $$ =sp ;
-               sp-> set_mus_property ("context-type", ly_str02scm ("Staff"));
+               sp-> set_mus_property ("context-type", scm_makfrom0str ("Staff"));
        }
        | TIME_T fraction  {
                Music * p1 = set_property_music (ly_symbol2scm ( "timeSignatureFraction"), $2);
 
-  int l = gh_scm2int (gh_car ($2));
-  int o = gh_scm2int (gh_cdr ($2));
-  
-  Moment one_beat = Moment (1)/Moment (o);
-  Moment len = Moment (l) * one_beat;
+               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 = gh_list (p1->self_scm (), p2->self_scm (), p3->self_scm(), SCM_UNDEFINED);
+               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);
                
@@ -1186,8 +1291,6 @@ command_element:
                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 ());
@@ -1195,11 +1298,7 @@ command_element:
 
                $$ = sp;
 
-/*
- TODO: should make alias TimingContext for Score
-*/
-
-               sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
+               sp-> set_mus_property ("context-type", scm_makfrom0str ( "Timing"));
        }
        ;
 
@@ -1215,40 +1314,39 @@ shorthand_command_req:
        | hyphen_req {
                $$ = $1;
        }
-       | '|'                           {
-               $$ = new Barcheck_req;
-       }
        | '~'   {
                $$ = new Tie_req;
        }
        | '['           {
                Span_req*b= new Span_req;
                b->set_span_dir (START);
-               b->set_mus_property ("span-type", ly_str02scm ("beam"));
+               b->set_mus_property ("span-type", scm_makfrom0str ("beam"));
                $$ =b;
+
+
+               THIS->last_beam_start_ = b->self_scm ();
        }
        | ']'           {
                Span_req*b= new Span_req;
                b->set_span_dir ( STOP);
-               b->set_mus_property ("span-type", ly_str02scm ("beam"));
+               b->set_mus_property ("span-type", scm_makfrom0str ("beam"));
                $$ = b;
        }
        | BREATHE {
                $$ = new Breathing_sign_req;
        }
-       | PORRECTUS {
+       | E_TILDE {
                $$ = new Porrectus_req;
        }
        ;
 
-
 verbose_command_req:
        COMMANDSPANREQUEST bare_int STRING { /*TODO: junkme */
-               Span_req * sp_p = new Span_req;
-               sp_p-> set_span_dir ( Direction ($2));
-               sp_p->set_mus_property ("span-type",$3);
-               sp_p->set_spot (THIS->here_input ());
-               $$ = sp_p;
+               Span_req * sp = new Span_req;
+               sp-> set_span_dir ( Direction ($2));
+               sp->set_mus_property ("span-type",$3);
+               sp->set_spot (THIS->here_input ());
+               $$ = sp;
        }
        | MARK DEFAULT  {
                Mark_req * m = new Mark_req;
@@ -1258,11 +1356,8 @@ verbose_command_req:
                Mark_req *m = new Mark_req;
                m->set_mus_property ("label", $2);
                $$ = m;
-
        }
        | PENALTY SCM_T         {
-
-               
                Break_req * b = new Break_req;
                SCM s = $2;
                if (!gh_number_p (s))
@@ -1273,24 +1368,24 @@ verbose_command_req:
                $$ = b;
        }
        | SKIP duration_length {
-               Skip_req * skip_p = new Skip_req;
-               skip_p->set_mus_property ("duration", $2);
+               Skip_req * skip = new Skip_req;
+               skip->set_mus_property ("duration", $2);
 
-               $$ = skip_p;
+               $$ = skip;
        }
        | tempo_request {
                $$ = $1;
        }
        | KEY DEFAULT {
-               Key_change_req *key_p= new Key_change_req;
-               $$ = key_p;
+               Key_change_req *key= new Key_change_req;
+               $$ = key;
        }
        | KEY NOTENAME_PITCH SCM_IDENTIFIER     {
-               Key_change_req *key_p= new Key_change_req;
+               Key_change_req *key= new Key_change_req;
                
-               key_p->set_mus_property ("pitch-alist", $3);
((Music* )key_p)->transpose (* unsmob_pitch ($2));
-               $$ = key_p
+               key->set_mus_property ("pitch-alist", $3);
              ((Music*)key)->transpose (* unsmob_pitch ($2));
+               $$ = key; 
        }
        ;
 
@@ -1308,6 +1403,17 @@ post_request:
        verbose_request
        | request_with_dir
        | close_request
+       | string_request
+       ;
+
+
+string_request:
+       E_UNSIGNED {
+               String_number_req* s = new String_number_req;
+               s->set_mus_property ("string-number",  gh_int2scm($1));
+               s->set_spot (THIS->here_input ());
+               $$ = s;
+       }
        ;
 
 
@@ -1315,7 +1421,7 @@ 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_->lookup_identifier ("dash" + ly_scm2string ($1));
                Articulation_req *a = new Articulation_req;
                if (gh_string_p (s))
                        a->set_mus_property ("articulation-type", s);
@@ -1344,17 +1450,18 @@ 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 ());
                $$ = d;
        }
        | SPANREQUEST bare_int STRING {
-               Span_req * sp_p = new Span_req;
-               sp_p->set_span_dir ( Direction ($2));
-               sp_p->set_mus_property ("span-type", $3);
-               sp_p->set_spot (THIS->here_input ());
-               $$ = sp_p;
+               Span_req * sp = new Span_req;
+               sp->set_span_dir ( Direction ($2));
+               sp->set_mus_property ("span-type", $3);
+               sp->set_spot (THIS->here_input ());
+               $$ = sp;
        }
        | tremolo_type  {
                Tremolo_req* a = new Tremolo_req;
@@ -1407,13 +1514,13 @@ steno_pitch:
        }
        | NOTENAME_PITCH sup_quotes     {
                Pitch p = *unsmob_pitch ($1);
-               p.octave_i_ +=  $2;
+               p.octave_ +=  $2;
                $$ = p.smobbed_copy ();
        }
        | NOTENAME_PITCH sub_quotes      {
                Pitch p =* unsmob_pitch ($1);
 
-               p.octave_i_ +=  -$2;
+               p.octave_ +=  -$2;
                $$ = p.smobbed_copy ();
 
        }
@@ -1429,13 +1536,13 @@ steno_tonic_pitch:
        }
        | TONICNAME_PITCH sup_quotes    {
                Pitch p = *unsmob_pitch ($1);
-               p.octave_i_ +=  $2;
+               p.octave_ +=  $2;
                $$ = p.smobbed_copy ();
        }
        | TONICNAME_PITCH sub_quotes     {
                Pitch p =* unsmob_pitch ($1);
 
-               p.octave_i_ +=  -$2;
+               p.octave_ +=  -$2;
                $$ = p.smobbed_copy ();
 
        }
@@ -1460,7 +1567,7 @@ explicit_pitch:
        }
        ;
 
-explicit_duration:
+verbose_duration:
        DURATION embedded_scm   {
                $$ = $2;
                if (!unsmob_duration ($2))
@@ -1473,7 +1580,7 @@ explicit_duration:
 
 extender_req:
        EXTENDER {
-               if (!THIS->lexer_p_->lyric_state_b ())
+               if (!THIS->lexer_->lyric_state_b ())
                        THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
                $$ = new Extender_req;
        }
@@ -1481,7 +1588,7 @@ extender_req:
 
 hyphen_req:
        HYPHEN {
-               if (!THIS->lexer_p_->lyric_state_b ())
+               if (!THIS->lexer_->lyric_state_b ())
                        THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
                $$ = new Hyphen_req;
        }
@@ -1492,27 +1599,32 @@ close_request:
                $$ = $1;
                dynamic_cast<Span_req*> ($$)->set_span_dir ( START);
        }
-       
+       ;
 close_request_parens:
        '('     {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ( "slur"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "slur"));
+               s->set_spot (THIS->here_input());
        }
        | E_OPEN        {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "phrasing-slur"));
+               s->set_spot (THIS->here_input());
        }
        | E_SMALLER {
                Span_req*s =new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ( "crescendo"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "crescendo"));
+               s->set_spot (THIS->here_input());
        }
        | E_BIGGER {
                Span_req*s =new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ("decrescendo"));
+               s->set_mus_property ("span-type", scm_makfrom0str ("decrescendo"));
+               s->set_spot (THIS->here_input());
        }
        ;
 
@@ -1527,19 +1639,23 @@ open_request:
 open_request_parens:
        E_EXCLAMATION   {
                Span_req *s =  new Span_req;
-               s->set_mus_property ("span-type", ly_str02scm ( "crescendo"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "crescendo"));
+               s->set_spot (THIS->here_input());
 
                $$ = s;
        }
        | ')'   {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ( "slur"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "slur"));
+               s->set_spot (THIS->here_input());
+
        }
        | E_CLOSE       {
                Span_req* s= new Span_req;
                $$ = s;
-               s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
+               s->set_mus_property ("span-type", scm_makfrom0str ( "phrasing-slur"));
+               s->set_spot (THIS->here_input());
        }
        ;
 
@@ -1557,11 +1673,11 @@ gen_text_def:
                $$ = t;
        }
        | DIGIT {
-               String ds = to_str ($1);
+               String ds = to_string ($1);
                Text_script_req* t = new Text_script_req;
-
-               t->set_mus_property ("text",  ly_str02scm (ds.ch_C ()));
-               t->set_mus_property ("text-type" , ly_symbol2scm ("finger"));
+               SCM finger = ly_symbol2scm ("finger");
+               t->set_mus_property ("text",  scm_makfrom0str (ds.to_str0 ()));
+               t->set_mus_property ("text-type" , finger);
                t->set_spot (THIS->here_input ());
                $$ = t;
        }
@@ -1569,26 +1685,28 @@ gen_text_def:
 
 script_abbreviation:
        '^'             {
-               $$ = gh_str02scm ("Hat");
+               $$ = scm_makfrom0str ("Hat");
        }
        | '+'           {
-               $$ = gh_str02scm ("Plus");
+               $$ = scm_makfrom0str ("Plus");
        }
        | '-'           {
-               $$ = gh_str02scm ("Dash");
+               $$ = scm_makfrom0str ("Dash");
        }
        | '|'           {
-               $$ = gh_str02scm ("Bar");
+               $$ = scm_makfrom0str ("Bar");
        }
        | '>'           {
-               $$ = gh_str02scm ("Larger");
+               $$ = scm_makfrom0str ("Larger");
        }
        | '.'           {
-               $$ = gh_str02scm ("Dot");
+               $$ = scm_makfrom0str ("Dot");
+       }
+       | '_' {
+               $$ = scm_makfrom0str ("Underscore");
        }
        ;
 
-
 script_dir:
        '_'     { $$ = DOWN; }
        | '^'   { $$ = UP; }
@@ -1614,20 +1732,27 @@ duration_length:
        multiplied_duration {
                $$ = $1;
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
        }       
        ;
 
 optional_notemode_duration:
        {
-               $$ = THIS->default_duration_.smobbed_copy ();
+               Duration dd = THIS->default_duration_;
+               $$ = dd.smobbed_copy ();
+
+               THIS->beam_check ($$);
        }
        | multiplied_duration   {
                $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
+
+               THIS->beam_check ($$);
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
        }       
        ;
 
@@ -1640,15 +1765,11 @@ steno_duration:
                        l =  intlog2 ($1);
 
                $$ = Duration (l, $2).smobbed_copy ();
-
-               THIS->set_last_duration (unsmob_duration ($$));
        }
        | DURATION_IDENTIFIER dots      {
                Duration *d =unsmob_duration ($1);
                Duration k (d->duration_log (),d->dot_count () + $2);
                $$ = k.smobbed_copy ();
-
-               THIS->set_last_duration (unsmob_duration ($$));
        }
        ;
 
@@ -1663,7 +1784,7 @@ multiplied_duration:
                $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
        }
        | multiplied_duration '*' FRACTION {
-               Rational  m (gh_scm2int (gh_car ($3)), gh_scm2int (gh_cdr ($3)));
+               Rational  m (gh_scm2int (ly_car ($3)), gh_scm2int (ly_cdr ($3)));
 
                $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
        }
@@ -1672,7 +1793,7 @@ multiplied_duration:
 fraction:
        FRACTION { $$ = $1; }
        | UNSIGNED '/' UNSIGNED {
-               $$ = gh_cons (gh_int2scm ($1), gh_int2scm ($3));
+               $$ = scm_cons (gh_int2scm ($1), gh_int2scm ($3));
        }
        ;
 
@@ -1710,32 +1831,52 @@ bass_mod:
        ;
 
 bass_figure:
-       bass_number  {
-               Pitch p ;
-               p .notename_i_ = $1 - 1;
-               p.normalise();
-               
-               Note_req * nr = new Note_req;
-               $$ = nr->self_scm ();
-               nr->set_mus_property ("pitch", p.smobbed_copy ());
+       FIGURE_SPACE {
+               Bass_figure_req *bfr = new Bass_figure_req;
+               $$ = bfr->self_scm();
+               scm_gc_unprotect_object ($$);
+       }
+       | bass_number  {
+               Bass_figure_req *bfr = new Bass_figure_req;
+               $$ = bfr->self_scm();
+
+               bfr->set_mus_property ("figure", gh_int2scm ($1));
+
                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;
+               Music *m = unsmob_music ($1);
+               if ($2) {
+                       SCM salter =m->get_mus_property ("alteration");
+                       int alter = gh_number_p ( salter) ? gh_scm2int (salter) : 0;
+                       m->set_mus_property ("alteration",
+                               gh_int2scm (alter + $2));
                } else {
-                       unsmob_music ($1)->set_mus_property ("force-accidental", SCM_BOOL_T);
+                       m->set_mus_property ("alteration", gh_int2scm (0));
                }
        }
        ;
 
+br_bass_figure:
+       '[' bass_figure {
+               $$ = $2;
+               unsmob_music ($$)->set_mus_property ("bracket-start", SCM_BOOL_T);
+       }
+       | bass_figure   {
+               $$ = $1;
+       }
+       | br_bass_figure ']' {
+               $$ = $1;
+               unsmob_music ($1)->set_mus_property ("bracket-stop", SCM_BOOL_T);
+       }
+       ;
+
 figure_list:
        /**/            {
                $$ = SCM_EOL;
        }
-       | figure_list bass_figure {
-               $$ = gh_cons ($2, $1); 
+       | figure_list br_bass_figure {
+               $$ = scm_cons ($2, $1); 
        }
        ;
 
@@ -1748,26 +1889,38 @@ figure_spec:
        }
        ;
 
+
+optional_rest:
+       /**/   { $$ = 0; }
+       | REST { $$ = 1; }
+       ;
+
 simple_element:
-       pitch exclamations questions optional_notemode_duration {
+       pitch exclamations questions optional_notemode_duration optional_rest {
 
                Input i = THIS->pop_spot ();
-               if (!THIS->lexer_p_->note_state_b ())
+               if (!THIS->lexer_->note_state_b ())
                        THIS->parser_error (_ ("Have to be in Note mode for notes"));
 
-               Note_req *n = new Note_req;
+               Music *n = 0;
+               if ($5)
+                       n =  new Rest_req ;
+               else
+                       n =  new Note_req;
                
                n->set_mus_property ("pitch", $1);
                n->set_mus_property ("duration", $4);
 
+
                if ($3 % 2)
                        n->set_mus_property ("cautionary", SCM_BOOL_T);
                if ($2 % 2 || $3 % 2)
                        n->set_mus_property ("force-accidental", SCM_BOOL_T);
 
                Simultaneous_music*v = new Request_chord (SCM_EOL);
-               v->set_mus_property ("elements", gh_list (n->self_scm (), SCM_UNDEFINED));
-               
+               v->set_mus_property ("elements", scm_list_n (n->self_scm (), SCM_UNDEFINED));
+               scm_gc_unprotect_object (n->self_scm());
+
                v->set_spot (i);
                n->set_spot (i);
                $$ = v;
@@ -1776,9 +1929,9 @@ simple_element:
                Music * m = unsmob_music ($1);
                Input i = THIS->pop_spot (); 
                m->set_spot (i);
-               for (SCM s = m->get_mus_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+               for (SCM s = m->get_mus_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
                        {
-                               unsmob_music (gh_car (s))->set_mus_property ("duration", $2);
+                               unsmob_music (ly_car (s))->set_mus_property ("duration", $2);
                        }
                $$ = m;
        }       
@@ -1788,22 +1941,22 @@ simple_element:
                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 ();
+                       Skip_req * skip = new Skip_req;
+                       skip->set_mus_property ("duration" ,$2);
+                       skip->set_spot (i);
+                       e = skip->self_scm ();
                  }
                  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 ();
+                       Rest_req * rest_req = new Rest_req;
+                       rest_req->set_mus_property ("duration", $2);
+                       rest_req->set_spot (i);
+                       e = rest_req->self_scm ();
                    }
-               Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
-               velt_p-> set_mus_property ("elements", gh_list (e,SCM_UNDEFINED));
-               velt_p->set_spot (i);
+               Simultaneous_music* velt = new Request_chord (SCM_EOL);
+               velt-> set_mus_property ("elements", scm_list_n (e,SCM_UNDEFINED));
+               velt->set_spot (i);
 
-               $$ = velt_p;
+               $$ = velt;
        }
        | MULTI_MEASURE_REST optional_notemode_duration         {
                Input i = THIS->pop_spot ();
@@ -1814,18 +1967,18 @@ simple_element:
                Span_req *sp2 = new Span_req;
                sp1-> set_span_dir ( START);
                sp2-> set_span_dir ( STOP);
-               SCM r = ly_str02scm ("rest");
+               SCM r = scm_makfrom0str ("rest");
                sp1->set_mus_property ("span-type", r);
                sp2->set_mus_property ("span-type", r);
 
                Request_chord * rqc1 = new Request_chord (SCM_EOL);
-               rqc1->set_mus_property ("elements", gh_list (sp1->self_scm (), SCM_UNDEFINED));
+               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", gh_list (sk->self_scm (), SCM_UNDEFINED));;
+               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", gh_list (sp2->self_scm (), SCM_UNDEFINED));;
+               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);
 
                $$ = new Sequential_music (SCM_EOL);
                $$->set_mus_property ("elements", ms);
@@ -1833,19 +1986,19 @@ simple_element:
        | 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",$2);
-               lreq_p->set_spot (i);
-               Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
-               velt_p->set_mus_property ("elements", gh_list (lreq_p->self_scm (), SCM_UNDEFINED));
+               Lyric_req* lreq = new Lyric_req;
+                lreq->set_mus_property ("text", $1);
+               lreq->set_mus_property ("duration",$2);
+               lreq->set_spot (i);
+               Simultaneous_music* velt = new Request_chord (SCM_EOL);
+               velt->set_mus_property ("elements", scm_list_n (lreq->self_scm (), SCM_UNDEFINED));
 
-               $$= velt_p;
+               $$= velt;
        }
        | chord {
                Input i = THIS->pop_spot ();
 
-               if (!THIS->lexer_p_->chord_state_b ())
+               if (!THIS->lexer_->chord_state_b ())
                        THIS->parser_error (_ ("Have to be in Chord mode for chords"));
                $$ = $1;
        }
@@ -1869,7 +2022,7 @@ chord_additions:
 
 chord_notes:
        chord_step {
-               $$ = $1
+               $$ = $1;
        }
        | chord_notes '.' chord_step {
                $$ = gh_append2 ($$, $3);
@@ -1890,7 +2043,7 @@ chord_inversion:
        {
                $$ = SCM_EOL;
        }
-       | '/' steno_tonic_pitch {
+       | CHORD_SLASH steno_tonic_pitch {
                $$ = $2;
        }
        ;
@@ -1906,13 +2059,13 @@ chord_bass:
 
 chord_step:
        chord_note {
-               $$ = gh_cons ($1, SCM_EOL);
+               $$ = scm_cons ($1, SCM_EOL);
        }
        | CHORDMODIFIER_PITCH {
-               $$ = gh_cons (unsmob_pitch ($1)->smobbed_copy (), SCM_EOL);
+               $$ = scm_cons (unsmob_pitch ($1)->smobbed_copy (), SCM_EOL);
        }
        | CHORDMODIFIER_PITCH chord_note { /* Ugh. */
-               $$ = gh_list (unsmob_pitch ($1)->smobbed_copy (),
+               $$ = scm_list_n (unsmob_pitch ($1)->smobbed_copy (),
                        $2, SCM_UNDEFINED);
        }
        ;
@@ -1920,26 +2073,26 @@ chord_step:
 chord_note:
        bare_unsigned {
                 Pitch m;
-               m.notename_i_ = ($1 - 1) % 7;
-               m.octave_i_ = $1 > 7 ? 1 : 0;
-               m.alteration_i_ = 0;
+               m.notename_ = ($1 - 1) % 7;
+               m.octave_ = $1 > 7 ? 1 : 0;
+               m.alteration_ = 0;
 
                $$ = m.smobbed_copy ();
         } 
        | bare_unsigned '+' {
                Pitch m;
-               m.notename_i_ = ($1 - 1) % 7;
-               m.octave_i_ = $1 > 7 ? 1 : 0;
-               m.alteration_i_ = 1;
+               m.notename_ = ($1 - 1) % 7;
+               m.octave_ = $1 > 7 ? 1 : 0;
+               m.alteration_ = 1;
 
 
                $$ = m.smobbed_copy ();
        }
        | bare_unsigned CHORD_MINUS {
                Pitch m;
-               m.notename_i_ = ($1 - 1) % 7;
-               m.octave_i_ = $1 > 7 ? 1 : 0;
-               m.alteration_i_ = -1;
+               m.notename_ = ($1 - 1) % 7;
+               m.octave_ = $1 > 7 ? 1 : 0;
+               m.alteration_ = -1;
 
                $$ = m.smobbed_copy ();
        }
@@ -2063,9 +2216,9 @@ questions:
 %%
 
 void
-My_lily_parser::set_yydebug (bool b)
+My_lily_parser::set_yydebug (bool )
 {
-#ifdef YYDEBUG
+#if 0
        yydebug = b;
 #endif
 }
@@ -2081,3 +2234,24 @@ 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;
+}