[vim/vim] update default highlight for the colorless terminal emulators (PR #20799)

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Maxim Kim

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Jul 20, 2026, 9:37:25 PM (19 hours ago) Jul 20
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In a colorless or broken terminal emulator current syntax highlighting is too intense with using bold and underline for various syntax elements.

In this scenario, when the colors are not available at all, the most important part of the syntax is the comments, something that is not executed or compiled.

  • Comments are highlighted as bold
  • All other syntax elements are set to NONE
  • LineNr is not highlighted (was underline)
  • SpecialKey is not highlighted (was bold)

Before PR:
image.png (view on web)

After PR:
image.png (view on web)


You can view, comment on, or merge this pull request online at:

  https://github.com/vim/vim/pull/20799

Commit Summary

  • ffdefb0 update default highlight for the colorless terminal emulators

File Changes

(2 files)

Patch Links:


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Maxim Kim

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Jul 20, 2026, 9:55:18 PM (19 hours ago) Jul 20
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habamax left a comment (vim/vim#20799)

Great, no issues with screendumps :)


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Maxim Kim

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Jul 20, 2026, 10:07:02 PM (19 hours ago) Jul 20
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habamax left a comment (vim/vim#20799)

@chrisbra I would also change the diff colors:

with colors:

image.png (view on web)

t_Co=0 As of now:
image.png (view on web)

t_Co=0 Proposal:

image.png (view on web)

If you're ok, will do in another PR.


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Maxim Kim

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Jul 20, 2026, 11:27:12 PM (17 hours ago) Jul 20
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habamax left a comment (vim/vim#20799)

IncSearch is updated:

before:
image.png (view on web)

after:
image.png (view on web)


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Maxim Kim

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Jul 20, 2026, 11:29:23 PM (17 hours ago) Jul 20
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habamax left a comment (vim/vim#20799)

Pmenu is updated


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