fine differences for entire diff in diff mode

fine differences for entire diff in diff mode

[Samuel Wales]

i know that i can do fine differences for a hunk.

is there a command to do fine differences for the entire buffer?

thanks.

Re: fine differences for entire diff in diff mode

[Samuel Wales]

alternatively, a function rather than a command.

On 6/19/18, Samuel Wales <samologist@gmail.com> wrote:
> i know that i can do fine differences for a hunk.
>
> is there a command to do fine differences for the entire buffer?
>
> thanks.
>


-- 
The Kafka Pandemic: <http://thekafkapandemic.blogspot.com>

The disease DOES progress. MANY people have died from it. And ANYBODY
can get it at any time.

"You’ve really gotta quit this and get moving, because this is murder
by neglect." ---
<http://www.meaction.net/2017/02/03/pwme-people-with-me-are-being-murdered-by-neglect>.

Re: fine differences for entire diff in diff mode

[Keith Waclena]

Samuel Wales <samologist@gmail.com> writes:

> i know that i can do fine differences for a hunk.
>
> is there a command to do fine differences for the entire buffer?
>
> thanks.

I wanted the same thing and couldn't find it, so I wrote this:

(defun kw-diff-highlights ()
  "Plow through all the hunks in this diff, which has the side-effect of refining
the micro-differences in each."
  (save-excursion
    (goto-char (point-min))
    (let ((pr (make-progress-reporter "Refining diff hunks... ")))
      (condition-case err
          (while t                      ; loop exited when diff-hunk-next raises an error at EOB
            (progress-reporter-update pr)
            (diff-hunk-next))
        (user-error nil)
        (error (message "kw-diff-highlights: unexpected error: %S" err)))
      (progress-reporter-done pr))))

(add-hook 'diff-mode-hook 'kw-diff-highlights)


--
Keith Waclena / Arch Linux / OCaml / M-x / ATKQJ / YASD / gc'e'a' / \clef treble
http://www.lib.uchicago.edu/keith/    gpg 5DA89C7DECA0D55A
n.p.: I'll Make You Sorry (Screaming Females)

Re: fine differences for entire diff in diff mode

[Samuel Wales]

thank you!

it looks like you even did error handling and progress report.


On 7/6/18, Keith Waclena <keith@lib.uchicago.edu> wrote:
> Samuel Wales <samologist@gmail.com> writes:
>
>> i know that i can do fine differences for a hunk.
>>
>> is there a command to do fine differences for the entire buffer?
>>
>> thanks.
>
> I wanted the same thing and couldn't find it, so I wrote this:
>
> (defun kw-diff-highlights ()
>   "Plow through all the hunks in this diff, which has the side-effect of
> refining
> the micro-differences in each."
>   (save-excursion
>     (goto-char (point-min))
>     (let ((pr (make-progress-reporter "Refining diff hunks... ")))
>       (condition-case err
>           (while t                      ; loop exited when diff-hunk-next
> raises an error at EOB
>             (progress-reporter-update pr)
>             (diff-hunk-next))
>         (user-error nil)
>         (error (message "kw-diff-highlights: unexpected error: %S" err)))
>       (progress-reporter-done pr))))
>
> (add-hook 'diff-mode-hook 'kw-diff-highlights)
>
>
> --
> Keith Waclena / Arch Linux / OCaml / M-x / ATKQJ / YASD / gc'e'a' / \clef
> treble
> http://www.lib.uchicago.edu/keith/    gpg 5DA89C7DECA0D55A
> n.p.: I'll Make You Sorry (Screaming Females)
>


-- 
The Kafka Pandemic: <http://thekafkapandemic.blogspot.com>

The disease DOES progress. MANY people have died from it. And ANYBODY
can get it at any time.

"You’ve really gotta quit this and get moving, because this is murder
by neglect." ---
<http://www.meaction.net/2017/02/03/pwme-people-with-me-are-being-murdered-by-neglect>.

Re: fine differences for entire diff in diff mode

[Stefan Monnier]

> I know that i can do fine differences for a hunk.
> is there a command to do fine differences for the entire buffer?

I just pushed to Emacs's `master` branch a patch which makes all diffs
highlight with refinement automatically.  It's not quite what you asked for,
in the sense that there's no separate command and it doesn't refine the
whole diff (it's only done on-the-fly as the various hunks get
displayed, thanks to jit-lock), but I think there's a good chance it
will cover your needs ;-)


        Stefan

Re: fine differences for entire diff in diff mode

[Andy Moreton]

On Wed 11 Jul 2018, Stefan Monnier wrote:

>> I know that i can do fine differences for a hunk.
>> is there a command to do fine differences for the entire buffer?
>
> I just pushed to Emacs's `master` branch a patch which makes all diffs
> highlight with refinement automatically.  It's not quite what you asked for,
> in the sense that there's no separate command and it doesn't refine the
> whole diff (it's only done on-the-fly as the various hunks get
> displayed, thanks to jit-lock), but I think there's a good chance it
> will cover your needs ;-)
>
>
>         Stefan

This change is extremely irritiating. It is fine to introduce a new
feature, but is a regression from previous behaviour and should not be
on by default.

    AndyM

Re: fine differences for entire diff in diff mode

[Stefan Monnier]

> This change is extremely irritiating. It is fine to introduce a new
> feature, but is a regression from previous behaviour and should not be
> on by default.

It's hard to address this kind of request since based on this
description I'm not even sure I know what it is "This change" is
supposed to refer to.

Please clarify what it is that irritates you.  If it's the actual fact
that "fine highlight" is displayed, then my anecdotal evidence is that
you're in the minority (which is why I enabled this by default,
currently).


        Stefan

Re: fine differences for entire diff in diff mode

[Samuel Wales]

thank you!  it will be a few years before i encounter it, when my os
upgrades.  :]  but in meantime i have kw's version.

i think it would be good as a command or funciton to turn it off when
the fine differences are too noisy and distracting.  but sometimes one
wants to turn fine differences back on.


On 7/11/18, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>> I know that i can do fine differences for a hunk.
>> is there a command to do fine differences for the entire buffer?
>
> I just pushed to Emacs's `master` branch a patch which makes all diffs
> highlight with refinement automatically.  It's not quite what you asked
> for,
> in the sense that there's no separate command and it doesn't refine the
> whole diff (it's only done on-the-fly as the various hunks get
> displayed, thanks to jit-lock), but I think there's a good chance it
> will cover your needs ;-)
>
>
>         Stefan
>
>
>


-- 
The Kafka Pandemic: <http://thekafkapandemic.blogspot.com>

The disease DOES progress. MANY people have died from it. And ANYBODY
can get it at any time.

"You’ve really gotta quit this and get moving, because this is murder
by neglect." ---
<http://www.meaction.net/2017/02/03/pwme-people-with-me-are-being-murdered-by-neglect>.