2020-03-19 16:17:53 +00:00
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function! MyFoldText()
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if !exists('g:foldtext_column')
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let g:foldtext_column = 80 " column to right align foldtext with
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endif
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if !exists('b:foldtext_column')
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let b:foldtext_column = g:foldtext_column " column to right align foldtext with
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endif
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if !exists('g:foldtext_maxcolumn')
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let g:foldtext_maxcolumn = 120
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endif
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let l:linecount = v:foldend - v:foldstart
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" don't display foldmarker braces
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" put one of the braces in brackets so vim doesn't treat
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" it as an actual fold marker
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let l:line = substitute(getline(v:foldstart), '"\?{\({\){', '', '')
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" don't display vim comment quotation marks
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" TODO other comment markers
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let l:line = substitute(l:line, "\^\"\\s\\?", '', '')
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2020-07-31 12:41:57 +00:00
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" TODO replace spaces with tabs if appropriate
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" replace tabs with spaces if expandtab
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if &expandtab == 0
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let l:tabwidth = &tabstop
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let l:tabspace = ' '[1:l:tabwidth]
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let l:line = substitute(l:line, ' ', l:tabspace, 'g')
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endif
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2020-03-19 16:17:53 +00:00
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" let l:postfix = l:linecount . ' ' . substitute(v:folddashes, '-', '•', 'g')
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let l:postfix = l:linecount . ' ' . substitute(v:folddashes, '-', '↓', 'g')
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while strchars(l:postfix) < 7
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let l:postfix = ' ' . l:postfix
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endwhile
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" let l:postfix = ' ↓ ' . l:postfix
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let l:len_line = len(l:line)
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let l:len_postfix = strchars(l:postfix)
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if l:len_line + l:len_postfix <= b:foldtext_column
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let l:padding = ' '[l:len_line + l:len_postfix + 0:b:foldtext_column - 1]
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let l:foldtext = l:line . l:padding . l:postfix
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else
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let l:sniptext = ' ⋯'
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let l:foldtext = l:line[:b:foldtext_column - 1 - strchars(l:sniptext) - l:len_postfix] . l:sniptext . l:postfix
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endif
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return l:foldtext
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endfunction
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set foldtext=MyFoldText()
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