From: Michael Heerdegen <michael_heerdegen@web.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 35433@debbugs.gnu.org
Subject: bug#35433: 27.0.50; 'function' docstring: tell more about advantages?
Date: Thu, 23 May 2019 01:39:49 +0200 [thread overview]
Message-ID: <87a7fe2h4q.fsf@web.de> (raw)
In-Reply-To: <835zqzx2bb.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 27 Apr 2019 11:47:04 +0300")
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Eli Zaretskii <eliz@gnu.org> writes:
> Fine with me (but you probably meant "byte compiler", not "by
> compiler").
Ehm - maybe.
Ok, is this ok and are all conventions respected?
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From 5ac1f0de47720a19225d71e83b906192940a6917 Mon Sep 17 00:00:00 2001
From: Michael Heerdegen <michael_heerdegen@web.de>
Date: Sat, 27 Apr 2019 09:40:10 +0200
Subject: [PATCH] Improve documentation of the 'function' special form
Point out that 'function' quoting is beneficial also for symbols.
* src/eval.c (function): Enhance docstring.
* doc/lispref/functions.texi (Anonymous Functions): Improve
documentation.
---
doc/lispref/functions.texi | 4 ++++
src/eval.c | 4 ++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/doc/lispref/functions.texi b/doc/lispref/functions.texi
index 97f7fb9f79..09844318d9 100644
--- a/doc/lispref/functions.texi
+++ b/doc/lispref/functions.texi
@@ -1122,6 +1122,10 @@ Anonymous Functions
When lexical binding is enabled, @var{function-object} is converted
into a closure. @xref{Closures}.
@end itemize
+
+When @var{function-object} is a symbol and the code is byte compiled,
+the byte-compiler will warn should that function be undefined or may
+be unknown at run-time.
@end defspec
@cindex @samp{#'} syntax
diff --git a/src/eval.c b/src/eval.c
index 567c32e0d7..5bba876637 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -544,8 +544,8 @@ usage: (quote ARG) */)
DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0,
doc: /* Like `quote', but preferred for objects which are functions.
-In byte compilation, `function' causes its argument to be compiled.
-`quote' cannot do that.
+In byte compilation, `function' causes its argument to be handled by
+the byte compiler. `quote' cannot do that.
usage: (function ARG) */)
(Lisp_Object args)
{
--
2.20.1
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Thanks,
Michael.
next prev parent reply other threads:[~2019-05-22 23:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-26 3:40 bug#35433: 27.0.50; 'function' docstring: tell more about advantages? Michael Heerdegen
2019-04-26 6:48 ` Eli Zaretskii
2019-04-27 8:30 ` Michael Heerdegen
2019-04-27 8:47 ` Eli Zaretskii
2019-05-22 23:39 ` Michael Heerdegen [this message]
2019-05-23 4:43 ` Eli Zaretskii
2019-05-23 16:55 ` Michael Heerdegen
2019-05-23 18:31 ` Eli Zaretskii
2019-05-23 23:18 ` Michael Heerdegen
2019-05-24 6:42 ` Eli Zaretskii
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