Doc: Augment description of how to customise staff line positions (3175)

[lilypond.git] / lily / lexer.ll

diff --git a/lily/lexer.ll b/lily/lexer.ll
index c1d3dd86a5a613ae8f78babdcc70152fb71b4ddb..0df70e20082f50bb4a6f131b00d6f55382f9b6af 100644 (file)
--- a/lily/lexer.ll
+++ b/lily/lexer.ll
@@ -925,6 +925,11 @@ Lily_lexer::scan_escaped_word (string str)
                return i;
 
        SCM sid = lookup_identifier (str);
+       if (Music *m = unsmob_music (sid))
+       {
+               m->set_spot (override_input (last_input_));
+       }
+
        if (sid != SCM_UNDEFINED)
                return scan_scm_id (sid);
 
@@ -1084,19 +1089,26 @@ Lily_lexer::eval_scm (SCM readerdata, char extra_token)
                sval = scm_struct_ref (sval, SCM_INUM0);
 
                if (scm_is_pair (sval)) {
-                       for (SCM v = scm_reverse (scm_cdr (sval));
-                            scm_is_pair (v);
-                            v = scm_cdr (v))
+                       for (SCM p = scm_reverse (scm_cdr (sval));
+                            scm_is_pair (p);
+                            p = scm_cdr (p))
                        {
+                               SCM v = scm_car (p);
+                               if (Music *m = unsmob_music (v))
+                               {
+                                       if (!unsmob_input (m->get_property ("origin")))
+                                               m->set_spot (override_input (last_input_));
+                               }
+                                       
                                int token;
                                switch (extra_token) {
                                case '$':
-                                       token = scan_scm_id (scm_car (v));
+                                       token = scan_scm_id (v);
                                        if (!scm_is_eq (yylval, SCM_UNSPECIFIED))
                                                push_extra_token (token, yylval);
                                        break;
                                case '#':
-                                       push_extra_token (SCM_IDENTIFIER, scm_car (v));
+                                       push_extra_token (SCM_IDENTIFIER, v);
                                        break;
                                }
                        }
@@ -1105,6 +1117,12 @@ Lily_lexer::eval_scm (SCM readerdata, char extra_token)
                        sval = SCM_UNSPECIFIED;
        }
 
+       if (Music *m = unsmob_music (sval))
+       {
+               if (!unsmob_input (m->get_property ("origin")))
+                       m->set_spot (override_input (last_input_));
+       }
+
        return sval;
 }