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Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers
From: |
Sam Steingold |
Subject: |
Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate): |
Date: |
Mon, 12 Apr 2010 17:47:28 -0400 |
On 4/12/10, Stefan Monnier <address@hidden> wrote:
> >> Introducing `compile-default-directory' is not the end of the world, but
> >> to my naive eyes, if `default-directory' doesn't point to the right
> >> place, it's a bug to be fixed.
> > default-directory "Automatically becomes buffer-local when set in any
> > fashion" this means that it is useless in
> > compilation-save-buffers-predicate because that is called inside the
> > buffer to be saved and thus for it default-directory should be the
> > directory where the buffer is located.
>
> Ah, yes, that would be a good reason, sorry for being so dense.
sorry about being unclear on this.
> >>>> How 'bout this:
> >>>> - we provide some way for the user to explain to compile.el how to find
> >>>> her projects's root directories (e.g. a list of tell-tale file names).
> >>> this is tricky: some files might be ordinary for some projects and the
> >>> tell-tale for others.
> >> I know, that's a significant problem, but I can't think of a really good
> >> solution other than push it onto the user by providing a customizable
> >> variable. My main goal here is to make sure that we can support the
> >> case where the user has several projects, which seems like a common
> >> enough case, especially for Free Software hackers.
> > I think this variable should be buffer-local (with an eye on being set in
> > dir_locals).
>
>
> Ah! Thanks for finally answering my original question "Could you
> explain how you see it being used?" ;-)
>
> My first answer would have been: in that case it probably shouldn't be
> a defcustom. But by now, I think we *can* give it a good global default
> value (and justify it being a defcustom).
>
> This default value will depend on Emacs being able to figure out what is
> "the current project", which is something where Emacs needs to improve
> anyway, so it's a good direction.
ok.
> >>>> - and we can also provide an option to "cd to project's root before
> >>>> running the command".
> >>> I doubt the value of this.
> >> I've used several build systems where this is necessary (e.g. a single
> >> Makefile at the root, or something equivalent). I usually work around
> >> it with something like M-x compile RET cd ..; make RET, but if `compile'
> >> could insert the "cd .." for me when needed it would be even better.
>
> > this sounds like a case for yet another buffer-local variable -
> > build-directory
>
>
> Could be. In my case this build-dir has always been the same as the
> project's root, but indeed there may be cases where something else
> is needed. We'll cross that bridge when we get there.
actually, in my case, the build directory is different from the root,
so I think that bridge is already there.
note also that the build directory can easily be _not_ under root, but
somewhere far far away, on a separate partition.
--
Sam Steingold <http://sds.podval.org>
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate): New custom variable., Stefan Monnier, 2010/04/07
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate): New custom variable., Sam Steingold, 2010/04/07
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Stefan Monnier, 2010/04/08
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Sam Steingold, 2010/04/09
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Stefan Monnier, 2010/04/09
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Sam Steingold, 2010/04/11
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Stefan Monnier, 2010/04/11
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Sam Steingold, 2010/04/12
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Stefan Monnier, 2010/04/12
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):,
Sam Steingold <=
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Stefan Monnier, 2010/04/12
- Re: [Emacs-diffs] /srv/bzr/emacs/trunk r99848: (compilation-save-buffers-predicate):, Tom Tromey, 2010/04/13