(Fdefine_function): New function.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/data.c b/src/data.c
index 66b4e90157b..df96a3d54f6 100644
--- a/src/data.c
+++ b/src/data.c
@@ -525,6 +525,21 @@ DEFUN ("fset", Ffset, Sfset, 2, 2, 0,
   return newdef;
 }
 
+DEFUN ("define-function", Fdefine_function, Sdefine_function, 2, 2, 0,
+  "Set SYMBOL's function definition to NEWVAL, and return NEWVAL.\n\
+Associates the function with the current load file, if any.")
+  (sym, newdef)
+     register Lisp_Object sym, newdef;
+{
+  CHECK_SYMBOL (sym, 0);
+  if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (sym)->function, Qunbound))
+    Vautoload_queue = Fcons (Fcons (sym, XSYMBOL (sym)->function),
+                             Vautoload_queue);
+  XSYMBOL (sym)->function = newdef;
+  LOADHIST_ATTACH (sym);
+  return newdef;
+}
+
 DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0,
   "Set SYMBOL's property list to NEWVAL, and return NEWVAL.")
   (sym, newplist)
@@ -2138,6 +2153,7 @@ syms_of_data ()
   defsubr (&Sboundp);
   defsubr (&Sfboundp);
   defsubr (&Sfset);
+  defsubr (&Sdefine_function);
   defsubr (&Ssetplist);
   defsubr (&Ssymbol_value);
   defsubr (&Sset);