[vim/vim] Fragile `tagfunc` `cmd` Field Parsing (Issue #20781)

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Mao-Yining

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4:32 AM (10 hours ago) 4:32 AM

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mao-yining created an issue (vim/vim#20781)

Steps to reproduce

vim --clean -Nu ./vimrc, vimrc:

vim9script
var foo = []
var res = {name: 'foo', kind: 'f', filename: @% ?? 'filename', cmd: '/\%3l\%5c'}
def Tag(_, _, _): list<dict<string>>
	return [res]
enddef
setl tagfunc=Tag
echo taglist('foo')->string()
res.cmd = 'call cursor(3, 5)'
echo taglist('foo')->string()
res.cmd = 'norm! 3G5|'
echo taglist('foo')->string()
quit

Output:

[{'cmd': '/\%3l\%5c;"	f', 'static': 0, 'name': 'foo', 'kind': '', 'filename': 'filename'}]
[{'cmd': 'call cursor(3, 5);"	f', 'static': 0, 'name': 'foo', 'kind': '', 'filename': 'filename'}]
[{'cmd': 'norm! 3G5', 'static': 0, 'name': 'foo', 'kind': 'f', 'filename': 'filename'}]

Expected behaviour

Expect:

[{'cmd': '/\%3l\%5c/', 'static': 0, 'name': 'foo', 'kind': 'f', 'filename': 'filename'}]
[{'cmd': 'call cursor(3, 5)', 'static': 0, 'name': 'foo', 'kind': 'f', 'filename': 'filename'}]
[{'cmd': 'norm! 3G5|', 'static': 0, 'name': 'foo', 'kind': 'f', 'filename': 'filename'}]

Version of Vim

92.782

Environment

MS-Windows and WSL GUI

Logs and stack traces

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Mao-Yining

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4:35 AM (10 hours ago) 4:35 AM

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mao-yining left a comment (vim/vim#20781)

relates: yegappan/lsp#824

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