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" Matlab indent file
" Language: Matlab
" Maintainer: Christophe Poucet <christophe.poucet@pandora.be>
" Last Change: 6 January, 2001
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
" Some preliminary setting
setlocal indentkeys=!,o,O=end,=case,=else,=elseif,=otherwise,=catch
setlocal indentexpr=GetMatlabIndent(v:lnum)
" Only define the function once.
if exists("*GetMatlabIndent")
finish
endif
function GetMatlabIndent(lnum)
" Give up if this line is explicitly joined.
if getline(a:lnum - 1) =~ '\\$'
return -1
endif
" Search backwards for the first non-empty line.
let plnum = a:lnum - 1
while plnum > 0 && getline(plnum) =~ '^\s*$'
let plnum = plnum - 1
endwhile
if plnum == 0
" This is the first non-empty line, use zero indent.
return 0
endif
let curind = indent(plnum)
" If the current line is a stop-block statement...
if getline(v:lnum) =~ '^\s*\(end\|else\|elseif\|case\|otherwise\|catch\)\>'
" See if this line does not follow the line right after an openblock
if getline(plnum) =~ '^\s*\(for\|if\|else\|elseif\|case\|while\|switch\|try\|otherwise\|catch\)\>'
" See if the user has already dedented
elseif indent(v:lnum) > curind - shiftwidth()
" If not, recommend one dedent
let curind = curind - shiftwidth()
else
" Otherwise, trust the user
return -1
endif
" endif
" If the previous line opened a block
elseif getline(plnum) =~ '^\s*\(for\|if\|else\|elseif\|case\|while\|switch\|try\|otherwise\|catch\)\>'
" See if the user has already indented
if indent(v:lnum) < curind + shiftwidth()
"If not, recommend indent
let curind = curind + shiftwidth()
else
" Otherwise, trust the user
return -1
endif
endif
" If we got to here, it means that the user takes the standardversion, so we return it
return curind
endfunction
" vim:sw=2
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