Anakin Childerhose
7c049d5ce1
Problem: filetype: icalendar files are not recognized
Solution: Detect *.ics files as icalendar filetype, include
syntax and filetype plugins (Anakin Childerhose).
Reference:
https://datatracker.ietf.org/doc/html/rfc5545
closes: #21356
Assisted-By: Claude Opus 5
Signed-off-by: Anakin Childerhose <anakin@childerhose.ca>
Signed-off-by: Christian Brabandt <cb@256bit.org>
54 lines
1.5 KiB
VimL
54 lines
1.5 KiB
VimL
" Vim filetype plugin file
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" Language: iCalendar
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" Maintainer: Anakin Childerhose <anakin@childerhose.ca>
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" Latest Change: 2026 Sept 22
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" License: Vim (see :h license)
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if exists('b:did_ftplugin')
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finish
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endif
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let b:did_ftplugin = 1
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let b:undo_ftplugin = ''
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let s:cpo_save = &cpo
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set cpo&vim
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if exists('g:loaded_matchit') && !exists('b:match_words')
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let b:match_words = '\<BEGIN\:.*\>:\<END\:.*\>'
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let b:undo_ftplugin ..= '| unlet! b:match_words'
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endif
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function s:icalendarComponentFold() abort
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if get(b:, 'icalendar_fold_tick', -1) == b:changedtick
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return get(b:icalendar_fold_levels, v:lnum - 1, '=')
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endif
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let levels = repeat(['='], line('$'))
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let depth = 0
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for match in matchbufline('%', '\C^\%(BEGIN\|END\):.*', 1, '$')
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if match.text =~# '^BEGIN:'
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let depth += 1
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let levels[match.lnum - 1] = '>' .. depth
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elseif match.text =~# '^END:' && depth > 0
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let levels[match.lnum - 1] = '<' .. depth
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let depth -= 1
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endif
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endfor
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let b:icalendar_fold_levels = levels
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let b:icalendar_fold_tick = b:changedtick
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return get(levels, v:lnum - 1, '=')
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endfunction
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if has('folding') && exists('*matchbufline') && get(g:, 'icalendar_folding', 0)
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setlocal foldexpr=s:icalendarComponentFold()
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setlocal foldmethod=expr
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let b:undo_ftplugin ..= '| setlocal foldexpr< foldmethod< | unlet! b:icalendar_fold_tick b:icalendar_fold_levels'
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endif
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let &cpo = s:cpo_save
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unlet s:cpo_save
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" vim: ts=2 sw=2
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