GNU bug report logs - #24584
25.1; Without fringe-mode, search highlighting on long lines breaks

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Dima Kogan <dima <at> secretsauce.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1; Without fringe-mode, search highlighting on long lines breaks
Date: Sat, 01 Oct 2016 14:05:36 -0700

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

Hi.

I just found an unexpected interaction of fringe-mode and isearch. Let's
say you have the attached file (composed of random dictionary words on
two very long lines) called 'txt'. Then you

1. emacs -Q /tmp/txt
2. M-x toggle-truncate-lines
3. M-> (to go to end of buffer)
4. C-r threatened

As you type "threatened" letter by letter, you see the search jump to
the match, and the match is highlighted. This is correct. Now do

5. M-x fringe-mode no-fringes
6. M-> (to go to end of buffer)
7. C-r threatened

When you type "threatened" now, the behavior is correct through "th",
but when you hit "r", the buffer scrolls back to the beginning of the
line, and you can't see the match anymore.

I haven't done any debugging other than figuring out the exact thing
that makes it break: turning off fringe mode. If the exact cause isn't
obvious to somebody here, I'll debug it myself in a bit.

[txt (application/octet-stream, attachment)]

Message #8 received at 24584 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Dima Kogan <dima <at> secretsauce.net>
Cc: 24584 <at> debbugs.gnu.org
Subject: Re: bug#24584: 25.1;
 Without fringe-mode, search highlighting on long lines breaks
Date: Sat, 08 Oct 2016 12:37:05 +0300

> From: Dima Kogan <dima <at> secretsauce.net>
> Date: Sat, 01 Oct 2016 14:05:36 -0700
> 
> 1. emacs -Q /tmp/txt
> 2. M-x toggle-truncate-lines
> 3. M-> (to go to end of buffer)
> 4. C-r threatened
> 
> As you type "threatened" letter by letter, you see the search jump to
> the match, and the match is highlighted. This is correct. Now do
> 
> 5. M-x fringe-mode no-fringes
> 6. M-> (to go to end of buffer)
> 7. C-r threatened
> 
> When you type "threatened" now, the behavior is correct through "th",
> but when you hit "r", the buffer scrolls back to the beginning of the
> line, and you can't see the match anymore.

Should be fixed now on the emacs-25 branch, please test.

Thanks.

Message #11 received at 24584 <at> debbugs.gnu.org (full text, mbox):

From: Dima Kogan <dima <at> secretsauce.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 24584 <at> debbugs.gnu.org
Subject: Re: bug#24584: 25.1;
 Without fringe-mode, search highlighting on long lines breaks
Date: Sun, 09 Oct 2016 03:46:18 -0700

Eli Zaretskii <eliz <at> gnu.org> writes:

> Should be fixed now on the emacs-25 branch, please test.

That did it. Thanks!

Message #16 received at 24584-done <at> debbugs.gnu.org (full text, mbox):

From: Dima Kogan <dima <at> secretsauce.net>
To: 24584-done <at> debbugs.gnu.org
Subject: Re: bug#24584: 25.1;
 Without fringe-mode, search highlighting on long lines breaks
Date: Sun, 09 Oct 2016 03:46:59 -0700

Eli fixed it in 197a6bcc20cecba40b56ae478d42a33eb1e19d57

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