bug#50845: Color capturing groups in query replace regexp

bug#50845: Color capturing groups in query replace regexp

[ndame via Bug reports for GNU Emacs, the Swiss army knife of text editors]

When doing some complex capturing and replacing it could be helpful to see what each of the groups captured.

So instead of coloring the match with a single color when query replacing, the part captured by the first parens
has one color, the second capturing group a different color, etc. and after replacing if the user used a
comma to replace but not move point to the next match, the same colors indicate the replacement texts for the
corresponding groups.

And the matching parts outside of parens can have the same face which qrr currently uses.

bug#50845: Color capturing groups in query replace regexp

[Lars Ingebrigtsen]

ndame via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs@gnu.org> writes:

> When doing some complex capturing and replacing it could be helpful to
> see what each of the groups captured.

You don't say what Emacs version you're reporting this for, but in Emacs
28, the `isearch-group-2' and `isearch-group-1' faces are used for
this.  (That is, it's even/odd group matches.)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#50845: Color capturing groups in query replace regexp

[ndame via Bug reports for GNU Emacs, the Swiss army knife of text editors]

>
> You don't say what Emacs version you're reporting this for, but in Emacs
> 28, the `isearch-group-2' and` isearch-group-1' faces are used for
> this. (That is, it's even/odd group matches.)

Emacs 27. I should have checked. This report can be closed then. Thanks.

bug#50845: Color capturing groups in query replace regexp

[Lars Ingebrigtsen]

ndame <laszlomail@protonmail.com> writes:

>> You don't say what Emacs version you're reporting this for, but in Emacs
>> 28, the `isearch-group-2' and` isearch-group-1' faces are used for
>> this. (That is, it's even/odd group matches.)
>
> Emacs 27. I should have checked. This report can be closed then. Thanks.

OK; closing.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#50845: [External] : bug#50845: Color capturing groups in query replace regexp

[Drew Adams]

> When doing some complex capturing and replacing it could be helpful to
> see what each of the groups captured.
> 
> So instead of coloring the match with a single color when query
> replacing, the part captured by the first parens
> has one color, the second capturing group a different color, etc. and
> after replacing if the user used a
> comma to replace but not move point to the next match, the same colors
> indicate the replacement texts for the
> corresponding groups.
> 
> And the matching parts outside of parens can have the same face which
> qrr currently uses.

FWIW, together, my libraries `isearch+.el' and
`replace+.el' do that.  (The former does it
also for Isearch.)

Each regexp group match is highlighted in the
currently search hit, and in other hits than the
current one the odd and even group matches are
highlighted (odd and even faces).

IMO, this feature is really helpful.  Regexp
matches should be shown this way, in general.
(Of course, it's optional for users.)

https://www.emacswiki.org/emacs/download/isearch%2b.el

https://www.emacswiki.org/emacs/download/replace%2b.el