[vim/vim] runtime/syntax: Highlight built-in constants in Python (PR #18922)

Rob B

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Dec 14, 2025, 4:24:23 AM12/14/25

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Optionally highlight https://docs.python.org/3/library/constants.html as Constant

Ref: #17788
Attn: @dkearns @zvezdan

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

https://github.com/vim/vim/pull/18922

Commit Summary

d390701 Add python_constant_highlight
eb51089 Add tests

File Changes

(6 files)

M runtime/doc/syntax.txt (9)
M runtime/syntax/python.vim (13)
A runtime/syntax/testdir/dumps/python_constants_default_00.dump (20)
A runtime/syntax/testdir/dumps/python_constants_highlight_00.dump (20)
A runtime/syntax/testdir/input/python_constants_default.py (11)
A runtime/syntax/testdir/input/python_constants_highlight.py (10)

Patch Links:

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dkearns

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Dec 15, 2025, 10:33:17 AM12/15/25

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dkearns left a comment (vim/vim#18922)

Thanks @f4nb0y.

I think it would be more flexible to always match the booleans and other constants without the config variable guard as pythonBoolean, and pythonConstant, in the initial keyword block around line 100, and hi-link them by default to pythonStatement, Statement, or Keyword. This is how pythonAsync is handled, for example.

The config variable would then only override the hi-link commands.

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Christian Brabandt

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4:52 PM (6 hours ago) 4:52 PM

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chrisbra left a comment (vim/vim#18922)