X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmain.cc;h=7a524d77dc8b45295c838e9079195252a7dc123d;hb=87eedcd59f4082cb0841528ad5bc82cb1d1191e3;hp=c3a058795bdffe8d578ce08d66d3adc18c0d46ad;hpb=aa16b015cdec74f99b31aceb12ff4b33443b38a0;p=lilypond.git

diff --git a/lily/main.cc b/lily/main.cc
index c3a058795b..7a524d77dc 100644
--- a/lily/main.cc
+++ b/lily/main.cc
@@ -153,7 +153,7 @@ static Long_option_init options_static[]
   {_i ("BACK"), "backend", 'b', _i ("use backend BACK (eps, gnome, ps [default],\nscm, svg, tex, texstr)")},
 
   {_i ("SYM[=VAL]"), "define-default", 'd',
-   _i ("set Scheme option SYM to VAL (default: #t)\n"
+   _i ("set Scheme option SYM to VAL (default: #t).\n"
        "Use -dhelp for help.")},
 
   {_i ("EXPR"), "evaluate", 'e', _i ("evaluate scheme code")},
@@ -627,3 +627,25 @@ main (int argc, char **argv)
   /* Only reachable if GUILE exits.  That is an error.  */
   return 1;
 }
+
+SCM atexit_list = SCM_EOL;
+
+LY_DEFINE (ly_atexit, "ly:atexit",
+	   2, 0, 0, (SCM proc, SCM args),
+	   "Just before exiting, call the procedure given. "
+"If this is called multiple times, the procedures are called "
+"in LIFO order.")
+{
+  atexit_list = scm_cons (scm_cons (proc, args), atexit_list);
+  scm_gc_protect_object (atexit_list);
+  return SCM_UNSPECIFIED;
+}
+
+LY_DEFINE (ly_do_atexit, "ly:do-atexit",
+	   0, 0, 0, (),
+	   "Call the atexit procedures.")
+{
+  for (SCM s = atexit_list; scm_is_pair (s); s = scm_cdr (s))
+    scm_apply_0 (scm_caar (s), scm_cdar (s));
+  return SCM_UNSPECIFIED;
+}