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print_error_message: Handle user-error to the echo area specially

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* src/print.c (print_error_message): For a user-error that is to
be printed to the echo area, use message3 in order to preserve
fontification.
This commit is contained in:
Sean Whitton 2025-07-07 09:57:37 +01:00
parent 72eb20f93f
commit b03f11d9ac
1 changed files with 13 additions and 0 deletions
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13
src/print.c
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@ -1118,6 +1118,19 @@ print_error_message (Lisp_Object data, Lisp_Object stream, const char *context,
tail = Fcdr_safe (data);
/* For a user-error displayed in the echo area, use message3 rather
than Fprinc in order to preserve fontification.
In particular, there might be hints to the user about key sequences
they could type to do what they seemed to want. */
if (EQ (errname, Quser_error) && EQ (stream, Qt)
/* These should always be true for a user-error, but check, lest
we throw any information away. */
&& !NILP (XCAR (tail)) && NILP (XCDR (tail)))
{
message3 (XCAR (tail));
return;
}
/* For file-error, make error message by concatenating
all the data items. They are all strings. */
if (!NILP (file_error) && CONSP (tail))