GNU bug report logs - #32676
[PATCH] Add option to highlight the 'next-error' error message

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Message #20 received at 32676 <at> debbugs.gnu.org (full text, mbox):

From: Ernesto Alfonso <erjoalgo <at> gmail.com>
To: 32676 <at> debbugs.gnu.org
Subject: Re: Feature request
Date: Thu, 13 Sep 2018 09:14:41 -0700

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

Replied all to the wrong thread -- removing emacs-devel

On Thu, Sep 13, 2018 at 9:10 AM Ernesto Alfonso <erjoalgo <at> gmail.com> wrote:

> Another problem with hl-line is what the original poster pointed out in
> the screenshot below: hl-line only highlights on the current buffer's
> window, so if the user were to switch to the source code buffer (or if he
> wasn't there in the first place, e.g. by having invokied next-error form
> the source code buffer via a key binding) then highlighting of error
> messages is either lost or never happens.
>
>
> [image: 13-Sep-2018-08:41:46.png]
>
>
> global hl line: no highlighting on next-error buffer if it is not current:
>
> [image: global-hl-line.gif]
>
> hl-line with next-buffer as current: highlighting not preserved after
> movement commands
> [image: hl-line-scrolling-on-next-buffer.gif]
>
> Thanks,
>
> Ernesto
>
> On Thu, Sep 13, 2018 at 12:10 AM Ernesto Alfonso <erjoalgo <at> gmail.com>
> wrote:
>
>> Dear maintainers,
>>
>> I recently made feature request along with a patch and sent it to
>> gnu-emacs <at> gnu.org based on the contributor guidelends.
>>
>> I wanted to provide a bit more context on the motivation behind this
>> patch.
>>
>> When scrolling through compilation errors, for some users the small
>> fringe arrow indicator that appears next to the current error in the
>> next-error buffer next to the error message can be hard to find quickly
>> without without strain. I personally often find myself reading the wrong
>> error message when fixing compilation errors.
>>
>> This enhancement adds a customizable option to highlight the current
>> error message in the next-error buffer in addition to the fringe arrow
>> indicator. This makes for a visually more pleasing experience when locating
>> the next-error current error message.
>>
>> I include a demo below where I'm scrolling through several errors in a
>> small c++ program.
>>
>> For the implementation, I used the suggestion in Drew's answer
>> <https://emacs.stackexchange.com/a/13137/2846> on emacs stackexchange
>> where another user raised the same concern about 2 years ago.
>>
>> The new behavior is off by default, and the font used to highlight the
>> errors may also be customized.
>>
>> Please let me know if the patch can be improved or what are the next
>> steps in this review, and I look forward to this enhancement being part of
>> the next emacs release.
>>
>> [image: demo.gif]
>>
>> Thanks,
>>
>> Ernesto
>>
>

[Message part 2 (text/html, inline)]

[global-hl-line.gif (image/gif, inline)]

[hl-line-scrolling-on-next-buffer.gif (image/gif, inline)]

[13-Sep-2018-08:41:46.png (image/png, inline)]

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