Re: Highlight current line when using gud

[Zhiwei Chen]

> On Jun 30, 2021, at 8:27 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
> 
>> From: Lars Ingebrigtsen <larsi@gnus.org>
>> Date: Wed, 30 Jun 2021 13:54:06 +0200
>> Cc: Zhiwei Chen <chenzhiwei03@kuaishou.com>, emacs-devel 
>> <emacs-devel@gnu.org>
>> 
>> Condy Chen <condy0919@gmail.com> writes:
>> 
>>> Before this patch, dark theme users cannot distinguish the line from the
>>> background even though hl-line-mode is enabled. Personally I can't.
>> 
>> I'm not sure I understand the problem here -- hl-line-mode works fine
>> for me when using a dark background.
> 
> Right, I wondered about that myself.  If some themes make the
> highlighted current line hard to see, that's a problem with the face
> definition of those themes.

Personally for me, hl-line-mode is used for the approximate position. 

> 
>>> Furthermore, users must set hl-line-sticky-flag to t to enable
>>> highlight in all windows or move the point to the source file buffer,
>>> otherwise only the arrow in fringe is helpful for which line program
>>> run to. It's too restricted in such a situation.
>>> 
>>> So I propose to add a new overlay of current line to make gud more
>>> friendly and deprecate the old one.
>> 
>> The patch seems to add a new overlay mechanism for gud that's switched
>> on for all people?  And is "the old one" you want to deprecate
>> hl-line-mode?
> 
> FWIW, I'm not opposed to such a change, but it must be an optional
> feature (we could discuss the default value).  I don't think we can
> force people to use this overlay.  Especially since on GUI displays
> the arrow is shown in the fringe (not to mention the fact that
> gud-gdb is deprecated in favor of gdb-mi.el).
> 

I’m happy to make it opt-in. Yes, I’m using M-x gdb :-)

--
Zhiwei Chen