every release of emacs, i have to fix comint

every release of emacs, i have to fix comint

[Samuel Wales]

a few releases ago, like 23 or 24, shell mode prompts stopped showing
the beautiful colors set up in .bashrc or .profile or wherever they
are set.

instead, the prompt was set to a new face, in a single color.

to fix it, i have to copy comint.el and quote out a couple of lines,
which i do haphazardly but works.

for example:

              ;; alpha
	      '(add-text-properties prompt-start (point) '(rear-nonsticky t)))

is there a variable someplace that says "please don't chnge my bash prompt"?

thanks.

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Re: every release of emacs, i have to fix comint

[Andreas Seltenreich]

Samuel Wales writes:

> for example:
>
>               ;; alpha
> 	      '(add-text-properties prompt-start (point) '(rear-nonsticky t)))
>
> is there a variable someplace that says "please don't chnge my bash prompt"?

I don't think there is, but I often use Advises to modify the behavior
of Emacs' functions from my ~/.emacs without having to modify the source
itself or having a copy+pasted, outdated version there.

    (info "(elisp) Advising Functions")

Maybe that's an option in your case as well?

regards,
Andreas

Re: every release of emacs, i have to fix comint

[Samuel Wales]

i am surprised that nobody else notices the lack of bash prompt
coloring in shell mode?

Re: every release of emacs, i have to fix comint

[Eli Zaretskii]

> From: Samuel Wales <samologist@gmail.com>
> Date: Wed, 1 May 2019 15:03:22 -0700
> 
> a few releases ago, like 23 or 24, shell mode prompts stopped showing
> the beautiful colors set up in .bashrc or .profile or wherever they
> are set.
> 
> instead, the prompt was set to a new face, in a single color.
> 
> to fix it, i have to copy comint.el and quote out a couple of lines,
> which i do haphazardly but works.
> 
> for example:
> 
>               ;; alpha
> 	      '(add-text-properties prompt-start (point) '(rear-nonsticky t)))
> 
> is there a variable someplace that says "please don't chnge my bash prompt"?

It seems the prompt highlighting was originally controlled by a user
option, but then was made unconditional 17 years ago.

I suggest to file a feature request bug report to make the
highlighting conditional again.

Re: every release of emacs, i have to fix comint

[Tadeus Prastowo]

On Sat, May 4, 2019 at 1:40 AM Samuel Wales <samologist@gmail.com> wrote:
>
> i am surprised that nobody else notices the lack of bash prompt
> coloring in shell mode?

I noticed it when I used Emacs 24 shipped with Ubuntu 16.04.  I got
the color back by something like what you do but more elaborate based
on git://git.sv.gnu.org/emacs.git at commit
792d44b3c31d2a682607ab8b79ae7d26b7402f41 that solves
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=20084.

But, since Emacs 25, I have no need to do what you do anymore because
it has been fixed.  To get the coloring, I have the following in my
.emacs:

(custom-set-faces '(comint-highlight-prompt ((t nil))))

HTH.

-- 
Best regards,
Tadeus