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" Vim indent file
" Language: Tcl
" Maintainer: Nikolai Weibull <now@bitwi.se>
" Latest Revision: 2006-12-20
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal indentexpr=GetTclIndent()
setlocal indentkeys=0{,0},!^F,o,O,0]
setlocal nosmartindent
if exists("*GetTclIndent")
finish
endif
function s:prevnonblanknoncomment(lnum)
let lnum = prevnonblank(a:lnum)
while lnum > 0
let line = getline(lnum)
if line !~ '^\s*\(#\|$\)'
break
endif
let lnum = prevnonblank(lnum - 1)
endwhile
return lnum
endfunction
function s:count_braces(lnum, count_open)
let n_open = 0
let n_close = 0
let line = getline(a:lnum)
let pattern = '[{}]'
let i = match(line, pattern)
while i != -1
if synIDattr(synID(a:lnum, i + 1, 0), 'name') !~ 'tcl\%(Comment\|String\)'
if line[i] == '{'
let n_open += 1
elseif line[i] == '}'
if n_open > 0
let n_open -= 1
else
let n_close += 1
endif
endif
endif
let i = match(line, pattern, i + 1)
endwhile
return a:count_open ? n_open : n_close
endfunction
function GetTclIndent()
let line = getline(v:lnum)
if line =~ '^\s*\*'
return cindent(v:lnum)
elseif line =~ '^\s*}'
return indent(v:lnum) - shiftwidth()
endif
let pnum = s:prevnonblanknoncomment(v:lnum - 1)
if pnum == 0
return 0
endif
let ind = indent(pnum) + s:count_braces(pnum, 1) * shiftwidth()
let pline = getline(pnum)
if pline =~ '}\s*$'
let ind -= (s:count_braces(pnum, 0) - (pline =~ '^\s*}' ? 1 : 0)) * shiftwidth()
endif
return ind
endfunction
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