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[#154] avoid execute() in capture_highlight #158

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Boolean263
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Instead of using execute() to get the foreground and background colours of a colour scheme, use synIDattr() and related functions. This prevents an E12 error when using this plugin in neovim to edit a file which has a modeline.

Tested in neovim 0.9.0 and vim 8.2.

Closes #154

Instead of using `execute()` to get the foreground and background
colours of a colour scheme, use [`synIDattr()`][1] and related
functions. This prevents an E12 error when using this plugin in neovim
to edit a file which has a [modeline][2].

Tested in neovim 0.9.0 and vim 8.2.

[1]: https://vimhelp.org/builtin.txt.html#synIDattr%28%29
[2]: https://vimhelp.org/options.txt.html#modeline
@huyz
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huyz commented Jun 13, 2024

Thanks @Boolean263, this PR fixes my problem whenever I open help in neovim 0.10.0:

Error detected while processing modelines[272]..OptionSet Autocommands for "tabstop"..function indent_guides#process_autoc
mds[2]..indent_guides#enable[8]..indent_guides#init_script_vars[7]..indent_guides#capture_highlight:
line    1:
E12: Command not allowed in secure mode in current dir or tag search
E12: Command not allowed in secure mode in current dir or tag search

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error on execute() when triggered from modeline in neovim
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