This makes defsubst accept that docstring as well, as in GNU Emacs. The
use of `documentation-property' is also as in GNU Emacs.
2014-01-27 Michael Sperber <mike(a)xemacs.org>
* symbols.c (Fdefine_function): Allow optional `docstring'
argument, as in GNU Emacs.
* lisp.h (Qfunction_documentation): Add extern declaration.
* doc.c (Fdocumentation_property): Move before its use.
(Fdocumentation): Retrieve documentation from `define-function'
docstring for symbols.
--
Regards,
Mike
diff --git a/src/doc.c b/src/doc.c
--- a/src/doc.c
+++ b/src/doc.c
@@ -37,6 +37,8 @@
Lisp_Object QSsubstitute, Qdefvar;
+Lisp_Object Qfunction_documentation;
+
/* Work out what source file a function or variable came from, taking the
information from the documentation file. */
@@ -578,6 +580,45 @@
return Qnil;
}
+DEFUN ("documentation-property", Fdocumentation_property, 2, 3, 0, /*
+Return the documentation string that is SYMBOL's PROP property.
+This is like `get', but it can refer to strings stored in the
+`doc-directory/DOC' file; and if the value is a string, it is passed
+through `substitute-command-keys'. A non-nil third argument avoids this
+translation.
+*/
+ (symbol, prop, raw))
+{
+ /* This function can GC */
+ Lisp_Object doc = Qnil;
+#ifdef I18N3
+ REGISTER Lisp_Object domain;
+#endif
+ struct gcpro gcpro1;
+
+ GCPRO1 (doc);
+
+ doc = Fget (symbol, prop, Qnil);
+ if (FIXNUMP (doc))
+ doc = get_doc_string (XFIXNUM (doc) > 0 ? doc : make_fixnum (- XFIXNUM (doc)));
+ else if (CONSP (doc))
+ doc = get_doc_string (doc);
+#ifdef I18N3
+ if (!NILP (doc))
+ {
+ domain = Fget (symbol, Qvariable_domain, Qnil);
+ if (NILP (domain))
+ doc = Fgettext (doc);
+ else
+ doc = Fdgettext (domain, doc);
+ }
+#endif
+ if (NILP (raw) && STRINGP (doc))
+ doc = Fsubstitute_command_keys (doc);
+ UNGCPRO;
+ return doc;
+}
+
DEFUN ("documentation", Fdocumentation, 1, 2, 0, /*
Return the documentation string of FUNCTION.
Unless a non-nil second argument RAW is given, the
@@ -589,6 +630,14 @@
Lisp_Object fun;
Lisp_Object doc;
+ if (SYMBOLP (function))
+ {
+ Lisp_Object tem = Fget (function, Qfunction_documentation, Qnil);
+ if (!NILP (tem))
+ return Fdocumentation_property (function, Qfunction_documentation,
+ raw);
+ }
+
fun = Findirect_function (function);
if (SUBRP (fun))
@@ -678,45 +727,6 @@
}
return doc;
}
-
-DEFUN ("documentation-property", Fdocumentation_property, 2, 3, 0, /*
-Return the documentation string that is SYMBOL's PROP property.
-This is like `get', but it can refer to strings stored in the
-`doc-directory/DOC' file; and if the value is a string, it is passed
-through `substitute-command-keys'. A non-nil third argument avoids this
-translation.
-*/
- (symbol, prop, raw))
-{
- /* This function can GC */
- Lisp_Object doc = Qnil;
-#ifdef I18N3
- REGISTER Lisp_Object domain;
-#endif
- struct gcpro gcpro1;
-
- GCPRO1 (doc);
-
- doc = Fget (symbol, prop, Qnil);
- if (FIXNUMP (doc))
- doc = get_doc_string (XFIXNUM (doc) > 0 ? doc : make_fixnum (- XFIXNUM (doc)));
- else if (CONSP (doc))
- doc = get_doc_string (doc);
-#ifdef I18N3
- if (!NILP (doc))
- {
- domain = Fget (symbol, Qvariable_domain, Qnil);
- if (NILP (domain))
- doc = Fgettext (doc);
- else
- doc = Fdgettext (domain, doc);
- }
-#endif
- if (NILP (raw) && STRINGP (doc))
- doc = Fsubstitute_command_keys (doc);
- UNGCPRO;
- return doc;
-}
DEFUN ("Snarf-documentation", Fsnarf_documentation, 1, 1, 0, /*
@@ -1299,6 +1309,7 @@
DEFSUBR (Fsubstitute_command_keys);
DEFSYMBOL (Qdefvar);
+ DEFSYMBOL (Qfunction_documentation);
}
void
diff --git a/src/lisp.h b/src/lisp.h
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -4619,6 +4619,8 @@
/* Defined in doc.c */
EXFUN (Fsubstitute_command_keys, 1);
+extern Lisp_Object Qfunction_documentation;
+
Lisp_Object unparesseuxify_doc_string (int fd, EMACS_INT position,
Ibyte *name_nonreloc,
Lisp_Object name_reloc,
diff --git a/src/symbols.c b/src/symbols.c
--- a/src/symbols.c
+++ b/src/symbols.c
@@ -749,14 +749,14 @@
}
/* FSFmacs */
-DEFUN ("define-function", Fdefine_function, 2, 2, 0, /*
+DEFUN ("define-function", Fdefine_function, 2, 3, 0, /*
Set SYMBOL's function definition to NEWDEF, and return NEWDEF.
Associates the function with the current load file, if any.
If NEWDEF is a compiled-function object, stores the function name in
the `annotated' slot of the compiled-function (retrievable using
`compiled-function-annotation').
*/
- (symbol, newdef))
+ (symbol, newdef, docstring))
{
/* This function can GC */
Ffset (symbol, newdef);
@@ -765,6 +765,10 @@
if (COMPILED_FUNCTIONP (newdef))
XCOMPILED_FUNCTION (newdef)->annotated = symbol;
#endif /* COMPILED_FUNCTION_ANNOTATION_HACK */
+
+ if (!NILP (docstring))
+ Fput (symbol, Qfunction_documentation, docstring);
+
return newdef;
}
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