From: Robert Pluim <rpluim@gmail.com>
To: Felix Dietrich <felix.dietrich@sperrhaken.name>
Cc: help-gnu-emacs@gnu.org
Subject: Re: how to track down "invalid face attribute" errors?
Date: Wed, 05 Oct 2022 15:31:49 +0200 [thread overview]
Message-ID: <877d1e8khm.fsf@gmail.com> (raw)
In-Reply-To: <87a66acuyj.fsf@sperrhaken.name> (Felix Dietrich's message of "Wed, 05 Oct 2022 14:32:04 +0200")
>>>>> On Wed, 05 Oct 2022 14:32:04 +0200, Felix Dietrich <felix.dietrich@sperrhaken.name> said:
Felix> But “xfaces.c:merge_face_ref” (which produces the error message) has a
Felix> “struct window w” parameter. I believe in cases where it is not NULL,
Felix> which it isnʼt when running the above code, this could be used to derive
Felix> the buffer and the bufferʼs position using the struct members “contents”
Felix> and “pointm’: 1. “contents” stores, for leaf windows, the windows
Felix> buffer; its descriptions mentions other possible value types it may hold
Felix> [1]; I do not know in how far these other types have to be considered
Felix> here. 2. “pointm” refers to a marker holding the current buffer
Felix> position in window; its description states that it is “used only when
Felix> the window is not selected”. Therefore, it is possible that, if the
Felix> window “w” is the selected one, the point would have to be taken from
Felix> another source (perhaps the “PT” macro in “buffer.h”).
Weʼre not necessarily examining the faces of the character at (point),
weʼre going through redisplay of the buffer, I thought?
Felix> Also note that, if the position would be added to the log entry,
Felix> multiple log entries would not be merged anymore. Additionally, with
Felix> the code above, the position is actually after the text (at
Felix> ‘point-max’); therefore, this might not be useful information to add.
Felix> I am not sure if the whole thing is worth the effort or would complicate
Felix> the creation of a simple log entry for a, hopefully, rare case to much.
Itʼs more effort than Iʼm willing to go to, at least :-)
Felix> Anyway, perhaps, if there is any interest in adding information to the
Felix> “Invalid face attribute” log message, further discussion should move to
Felix> a wishlist bug report?
Yes. That will get it in front of people who know the relevant code
better than I do.
Robert
--
next prev parent reply other threads:[~2022-10-05 13:31 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-25 12:03 how to track down "invalid face attribute" errors? Eric S Fraga
2022-09-25 13:00 ` Emanuel Berg
2022-09-26 9:04 ` Eric S Fraga
2022-09-26 9:40 ` Robert Pluim
2022-09-26 9:50 ` Fraga, Eric
2022-09-27 11:12 ` Felix Dietrich
2022-09-27 14:08 ` Robert Pluim
2022-10-05 12:32 ` Felix Dietrich
2022-10-05 13:31 ` Robert Pluim [this message]
2022-10-05 13:51 ` Eli Zaretskii
2022-10-06 14:58 ` Felix Dietrich
2022-09-28 11:41 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-09-28 15:04 ` Robert Pluim
2022-09-29 16:32 ` Emanuel Berg
2022-10-03 19:19 ` Felix Dietrich
2022-10-03 22:46 ` Emanuel Berg
2022-10-04 11:06 ` Felix Dietrich
2022-10-05 11:29 ` Felix Dietrich
2022-09-25 14:01 ` Eli Zaretskii
2022-09-25 15:53 ` Eric S Fraga
2022-09-25 16:06 ` Eli Zaretskii
2022-09-25 17:20 ` Eric S Fraga
2022-09-25 14:26 ` Felix Dietrich
2022-09-25 15:51 ` Fraga, Eric
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