[vim/vim] runtime(csh): Update ftplugin, improve matchit behaviour (PR #19190)

dkearns

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Jan 16, 2026, 8:24:42 AMJan 16

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Allow for an unparenthesised expression argument to the 'if',
'if-then', and 'while' commands. This is undocumented, and probably
unintended, behaviour but is frequently seen in the wild.
Allow for a continued-line expression argument to the 'if-then'
command.

Related: #19172 (csh: Support negated if in matchit)

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

https://github.com/vim/vim/pull/19190

Commit Summary

233eefd runtime(csh): Update ftplugin, improve matchit behaviour

File Changes

(1 file)

M runtime/ftplugin/csh.vim (68)

Patch Links:

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dkearns

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Jan 17, 2026, 4:07:23 AMJan 17

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dkearns left a comment (vim/vim#19190)

@simaoafonso-pwt, this should match most reasonable examples.

if commands with a tail comment or command ending in "then" will still, erroneously, get matched up as an if-then command. The easiest way to solve that is to rely on syntax ID testing but the syntax files aren't really up to the task yet, so I'll leave it until I get a chance to update them.

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Simão Afonso @ Powertools Tech

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Jan 19, 2026, 6:59:46 AMJan 19

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simaoafonso-pwt left a comment (vim/vim#19190)

Confirmed, this kind of weirdness works correctly:

if ("$variable" != "<unassigned>") then
    if (("$variable" != "V1") && ("$variable" != "V2") && \
        ("$variable" != "V3") && ("$variable" != "V4")) then
        echo "ERROR: Secret error message"
        exit 1
    else
        setenv VARIABLE_SECRET "$variable"
    endif
endif

Even Github's highlight chokes on this.

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Christian Brabandt

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Jan 23, 2026, 2:07:19 PMJan 23

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chrisbra left a comment (vim/vim#19190)

thanks

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Christian Brabandt

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Jan 23, 2026, 2:09:16 PMJan 23

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Closed #19190 via 09a4805.

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