GNU bug report logs - #18209
Add ability to truncate long grep matches

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Reuben Thomas <rrt <at> sc3d.org>
To: bug-emacs <bug-emacs <at> gnu.org>
Subject: Add ability to truncate long grep matches
Date: Wed, 6 Aug 2014 12:52:46 +0100

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

In some files (e.g. in text files using newline as a paragraph delimiter)
one can get matches in very long lines that can occupy several screenfuls.
These are not always straightforward to avoid. There's no way to tell (GNU)
grep to truncate its output; perhaps Emacs could help here, by being able
to specify a maximum length of match to show? For bonus points, show part
of the line that matches, with ellipses, rather than just truncating the
line; but even without that it would be useful, provided that the
truncation is clearly marked: the annoyance and slowness of navigating
*grep* buffers full of enormous matches which are almost always not what
one is looking for would be great!

(I just managed to work around one source, minified Javascript mixed in
with non-minified files, by omitting *.min.js in the list of files grep
should ignore, but this is not always easy either: sometimes one might only
have the minified form to hand, and might want to grep it e.g. while
debugging.)

-- 
http://rrt.sc3d.org

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Message #8 received at 18209 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Reuben Thomas <rrt <at> sc3d.org>
Cc: 18209 <at> debbugs.gnu.org
Subject: Re: bug#18209: Add ability to truncate long grep matches
Date: Wed, 06 Aug 2014 13:44:19 -0400

>>>>> "Reuben" == Reuben Thomas <rrt <at> sc3d.org> writes:

> In some files (e.g. in text files using newline as a paragraph delimiter)
> one can get matches in very long lines that can occupy several screenfuls.
> These are not always straightforward to avoid. There's no way to tell (GNU)
> grep to truncate its output; perhaps Emacs could help here, by being able
> to specify a maximum length of match to show? For bonus points, show part
> of the line that matches, with ellipses, rather than just truncating the
> line; but even without that it would be useful, provided that the
> truncation is clearly marked: the annoyance and slowness of navigating
> *grep* buffers full of enormous matches which are almost always not what
> one is looking for would be great!

FWIW, I have the following in my ~/.emacs:

   (defun sm-compilation-mode-hook ()
     (setq truncate-lines t))
   (add-hook 'compilation-mode-hook #'sm-compilation-mode-hook)


-- Stefan

Message #11 received at 18209 <at> debbugs.gnu.org (full text, mbox):

From: Reuben Thomas <rrt <at> sc3d.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 18209 <at> debbugs.gnu.org
Subject: Re: bug#18209: Add ability to truncate long grep matches
Date: Wed, 6 Aug 2014 18:47:48 +0100

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

On 6 August 2014 18:44, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:

> >>>>> "Reuben" == Reuben Thomas <rrt <at> sc3d.org> writes:
>
> > In some files (e.g. in text files using newline as a paragraph delimiter)
> > one can get matches in very long lines that can occupy several
> screenfuls.
> > These are not always straightforward to avoid. There's no way to tell
> (GNU)
> > grep to truncate its output; perhaps Emacs could help here, by being able
> > to specify a maximum length of match to show? For bonus points, show part
> > of the line that matches, with ellipses, rather than just truncating the
> > line; but even without that it would be useful, provided that the
> > truncation is clearly marked: the annoyance and slowness of navigating
> > *grep* buffers full of enormous matches which are almost always not what
> > one is looking for would be great!
>
> FWIW, I have the following in my ~/.emacs:
>
>    (defun sm-compilation-mode-hook ()
>      (setq truncate-lines t))
>    (add-hook 'compilation-mode-hook #'sm-compilation-mode-hook)
>

That's ingenious, obvious, and thanks very muchious.

-- 
http://rrt.sc3d.org

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Message #14 received at 18209 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Reuben Thomas <rrt <at> sc3d.org>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 18209 <at> debbugs.gnu.org
Subject: Re: bug#18209: Add ability to truncate long grep matches
Date: Wed, 12 Aug 2020 11:39:13 -0700

Reuben Thomas <rrt <at> sc3d.org> writes:

> On 6 August 2014 18:44, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:
>
>  >>>>> "Reuben" == Reuben Thomas <rrt <at> sc3d.org> writes:
>
>  > In some files (e.g. in text files using newline as a paragraph delimiter)
>  > one can get matches in very long lines that can occupy several screenfuls.
>  > These are not always straightforward to avoid. There's no way to tell (GNU)
>  > grep to truncate its output; perhaps Emacs could help here, by being able
>  > to specify a maximum length of match to show? For bonus points, show part
>  > of the line that matches, with ellipses, rather than just truncating the
>  > line; but even without that it would be useful, provided that the
>  > truncation is clearly marked: the annoyance and slowness of navigating
>  > *grep* buffers full of enormous matches which are almost always not what
>  > one is looking for would be great!
>
>  FWIW, I have the following in my ~/.emacs:
>
>     (defun sm-compilation-mode-hook ()
>       (setq truncate-lines t))
>     (add-hook 'compilation-mode-hook #'sm-compilation-mode-hook)
>
> That's ingenious, obvious, and thanks very muchious.

Did that resolve the problem, or is there anything more to do here?

Best regards,
Stefan Kangas

Message #17 received at 18209 <at> debbugs.gnu.org (full text, mbox):

From: Reuben Thomas <rrt <at> sc3d.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 18209 <at> debbugs.gnu.org
Subject: Re: bug#18209: Add ability to truncate long grep matches
Date: Wed, 12 Aug 2020 19:43:29 +0100

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

That worked, thanks!

-- 
https://rrt.sc3d.org

On Wed, 12 Aug 2020, 19:39 Stefan Kangas, <stefan <at> marxist.se> wrote:

> Reuben Thomas <rrt <at> sc3d.org> writes:
>
> > On 6 August 2014 18:44, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:
> >
> >  >>>>> "Reuben" == Reuben Thomas <rrt <at> sc3d.org> writes:
> >
> >  > In some files (e.g. in text files using newline as a paragraph
> delimiter)
> >  > one can get matches in very long lines that can occupy several
> screenfuls.
> >  > These are not always straightforward to avoid. There's no way to tell
> (GNU)
> >  > grep to truncate its output; perhaps Emacs could help here, by being
> able
> >  > to specify a maximum length of match to show? For bonus points, show
> part
> >  > of the line that matches, with ellipses, rather than just truncating
> the
> >  > line; but even without that it would be useful, provided that the
> >  > truncation is clearly marked: the annoyance and slowness of navigating
> >  > *grep* buffers full of enormous matches which are almost always not
> what
> >  > one is looking for would be great!
> >
> >  FWIW, I have the following in my ~/.emacs:
> >
> >     (defun sm-compilation-mode-hook ()
> >       (setq truncate-lines t))
> >     (add-hook 'compilation-mode-hook #'sm-compilation-mode-hook)
> >
> > That's ingenious, obvious, and thanks very muchious.
>
> Did that resolve the problem, or is there anything more to do here?
>
> Best regards,
> Stefan Kangas
>

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

Message #22 received at 18209-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Reuben Thomas <rrt <at> sc3d.org>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 18209-done <at> debbugs.gnu.org
Subject: Re: bug#18209: Add ability to truncate long grep matches
Date: Wed, 12 Aug 2020 20:50:42 +0200

Reuben Thomas <rrt <at> sc3d.org> writes:

> That worked, thanks!

Thanks! Closing.

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