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[Feature request] Highlight the regex matching part of the line in the candidates #1147

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rieje opened this Issue Aug 8, 2017 · 8 comments

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@rieje

rieje commented Aug 8, 2017

Similar to how there's (incremental) highlighting for candidates for Ivy/Counsel. For a specific example, I wanted to replace ag with ripgrep so I do a search in my init.el for "ag". Needless to say, I am getting tons of candidates. If the regex matching part of the string in each line is highlighted, it would be far easier to parse each line to see if it's what I'm looking for, rather than reading each line from left to right trying to find all instances of ag.

@abo-abo

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abo-abo commented Aug 8, 2017

There's highlighting in both places by default. Unless I misunderstood what you're saying.

@rieje

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rieje commented Aug 8, 2017

Through trial and error it seems the following is the culprit:

(setq ivy-re-builders-alist
'((swiper . ivy--regex-plus)
(t . ivy--regex-ignore-order)))

Removing (t . ivy--regex-ignore-order) restores highlighting. Is this a bug or intended? Can I keep this setting and still have highlighting?

@abo-abo

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abo-abo commented Aug 9, 2017

It's a bug then. I only use ivy--regex-plus, so I prioritize fixing that. PRs welcome.

@rieje

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rieje commented Aug 10, 2017

Actually, I just checked and it seems commenting out either (swiper . ivy--regex-plus) or (t . ivy--regex-ignore-order) restores the intended behavior and having both settings results in no highlighting, so it's not an issue with ivy--regex-ignore-order but something else (hopefully that makes it more of a priority :)).

@abo-abo

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abo-abo commented Aug 10, 2017

Please give me a reproducible scenario with emacs -Q.

@rieje

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rieje commented Aug 11, 2017

With the following settings:

(use-package ivy
  :ensure t
  :config
  (ivy-mode 1)
  (setq ivy-re-builders-alist
        '((swiper . ivy--regex-plus)
          (t . ivy--regex-ignore-order)
          )))

Use swiper and search for a string. incremental highlighting is shown in the visible buffer, but there is no highlighting of any sort in the minibuffer.

@abo-abo abo-abo closed this in 2881ffe Aug 13, 2017

@abo-abo

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abo-abo commented Aug 13, 2017

Thanks, please test.

@rieje

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rieje commented Aug 13, 2017

Works now, thanks!

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