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Re: Grand Unified Debugger Rewrite's process buffer: comint, eterm or es

From: rocky
Subject: Re: Grand Unified Debugger Rewrite's process buffer: comint, eterm or eshell?
Date: Mon, 2 Nov 2009 06:44:49 -0800 (PST)
User-agent: G2/1.0

On Nov 1, 4:30 pm, Dave Love <address@hidden> wrote:
> rocky <address@hidden> writes:
> > I have started to rewrite gud from the ground up.
> Why, exactly?
> > For the process buffer I have 3 choices.
> > 1. I can stick with comint.el. It seems the most creaky.
> `Creaky' how?  The whole idea of comint is to be a general way to run
> sub-processes like debuggers, although there should be another layer to
> abstract things like inferior programming interpreters.  What's wrong
> with it for that?

That comment was based on writing both a output filter hook for comint
and then one for eshell. The comint hook is passed a string with the
text to do the insertion, while the eshell hook you pass nothing. Why
nothing? Experience I guess seems to show that it's easier just to
work with the process buffer assuming the there have been marks set.
eshell and term have such marks {term,eshell}-last-input-{start,end}
while  comint seems to have only gotten this recently (Mar '08). I
guess the last time I looked this wasn't there.

> > I use it both in
> > comint.el and eshell.el in "shell tracker" (think pdb-track) mode.
> I implemented a prototype gud-minor-mode long ago for that sort of
> thing, as alluded to in python.el if I recall correctly.  It's
> straightforward but can't be a simple add-on to GUD, so wasn't going to
> be useful.  The pdbtrack stuff is a mistake,

If by "a mistake" you mean something other than it is language
specific, I'd be interested to learn in what ways you think it a

> apparently from a
> mono-lingual programming culture, and it's unfortunate it's been
> installed in Emacs, making it harder to do the right thing.

A multi-lingual track mode is working in
it has been configured for bashdb, kshdb, zshdb, rdebug, rbdbgr, pydb,
pydbgr and remake which is enough for my needs.

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