GNU bug report logs - #57179
29.0.50: 'wrong-number-of-arguments' for function of two arguments called from 'window-scroll-functions'

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Alan Mackenzie <acm <at> muc.de>, Andrea Greselin <greselin.andrea <at> gmail.com>, 57179 <at> debbugs.gnu.org
Subject: bug#57179: 29.0.50: 'wrong-number-of-arguments' for function of two arguments called from 'window-scroll-functions'
Date: Sun, 14 Aug 2022 02:19:31 +0200

[Message part 1 (text/plain, inline)]

Michael Heerdegen <michael_heerdegen <at> web.de> writes:

> Please tell whether this information suffices and you already have some
> idea or if I should try to create a recipe.  I guess this must be
> related to a recent change from within the last few days.

Reverting a part of

48215c41d1 New debugging facility: backtraces from errors in Lisp called
from redisplay (Alan Mackenzie <acm <at> muc.de> 2022-08-11)

like this:

[0001-Test-for-57179.patch (text/x-diff, inline)]

From ffb7c3d558b599bcc84f1bf4fb4388569892d927 Mon Sep 17 00:00:00 2001
From: Michael Heerdegen <michael_heerdegen <at> web.de>
Date: Sun, 14 Aug 2022 02:14:58 +0200
Subject: [PATCH] Test for #57179

---
 src/xdisp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/xdisp.c b/src/xdisp.c
index 719b131baa..47eaddabce 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -18221,8 +18221,8 @@ run_window_scroll_functions (Lisp_Object window, struct text_pos startp)
     {
       specpdl_ref count = SPECPDL_INDEX ();
       specbind (Qinhibit_quit, Qt);
-      safe_run_hooks_2
-	(Qwindow_scroll_functions, window, make_fixnum (CHARPOS (startp)));
+      run_hook_with_args_2 (Qwindow_scroll_functions, window,
+			    make_fixnum (CHARPOS (startp)));
       unbind_to (count, Qnil);
       SET_TEXT_POS_FROM_MARKER (startp, w->start);
       /* In case the hook functions switch buffers.  */
--
2.30.2

[Message part 3 (text/plain, inline)]

seems to fix my incarnation of this problem.  Can it be that?  CC'ing
Alan (the author).

TIA,

Michael.

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