X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcontext-def.cc;h=56da817e105cb322f9b4a6ed70e0dfab9ea498d0;hb=058370efc7e9710f149d0f444328bb1fcd7bdec1;hp=1f823bf50368f747aff414b68bd6e8181c6b9b7c;hpb=b1767f0d1f3e27e9e56f397aa4cc112212407c70;p=lilypond.git

diff --git a/lily/context-def.cc b/lily/context-def.cc
index 1f823bf503..56da817e10 100644
--- a/lily/context-def.cc
+++ b/lily/context-def.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2000--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2000--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -316,6 +316,7 @@ Context_def::instantiate (SCM ops)
   context->definition_mods_ = ops;
   context->aliases_ = context_aliases_;
   context->accepts_list_ = get_accepted (ops);
+  context->default_child_ = get_default_child (ops);
 
   return context;
 }
@@ -342,6 +343,10 @@ Context_def::to_alist () const
                             get_translator_names (SCM_EOL)), ell);
   ell = scm_cons (scm_cons (ly_symbol2scm ("description"), description_), ell);
   ell = scm_cons (scm_cons (ly_symbol2scm ("aliases"), context_aliases_), ell);
+  ell = scm_cons (scm_cons (ly_symbol2scm ("accepts"), get_accepted (SCM_EOL)),
+                  ell);
+  if (scm_is_symbol (default_child_))
+    ell = scm_acons (ly_symbol2scm ("default-child"), default_child_, ell);
   ell = scm_cons (scm_cons (ly_symbol2scm ("accepts"), get_accepted (SCM_EOL)),
                   ell);
   ell = scm_cons (scm_cons (ly_symbol2scm ("property-ops"), property_ops_),
@@ -381,7 +386,7 @@ bool
 Context_def::is_alias (SCM sym) const
 {
   if (scm_is_eq (sym, ly_symbol2scm ("Bottom")))
-    return !scm_is_pair (get_accepted (SCM_EOL));
+    return !scm_is_symbol (get_default_child (SCM_EOL));
 
   if (scm_is_eq (sym, get_context_name ()))
     return true;
@@ -391,9 +396,12 @@ Context_def::is_alias (SCM sym) const
 
 LY_DEFINE (ly_context_def_lookup, "ly:context-def-lookup",
            2, 1, 0, (SCM def, SCM sym, SCM val),
-           "Return the value of @var{sym} in output definition @var{def}"
-           " (e.g., @code{\\paper}).  If no value is found, return"
-           " @var{val} or @code{'()} if @var{val} is undefined.")
+           "Return the value of @var{sym} in context definition @var{def}"
+           " (e.g., @code{\\Voice}).  If no value is found, return"
+           " @var{val} or @code{'()} if @var{val} is undefined."
+           " @var{sym} can be any of @samp{default-child}, @samp{consists},"
+           " @samp{description}, @samp{aliases}, @samp{accepts},"
+           " @samp{property-ops}, @samp{context-name}, @samp{group-type}.")
 {
   LY_ASSERT_SMOB (Context_def, def, 1);
   Context_def *cd = unsmob_context_def (def);