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" Vim ftplugin file
" Language: Erlang
" Author: Oscar Hellstr�m <oscar@oscarh.net>
" Contributors: Ricardo Catalinas Jim�nez <jimenezrick@gmail.com>
" Eduardo Lopez (http://github.com/tapichu)
" License: Vim license
" Version: 2012/01/25
if exists('b:did_ftplugin')
finish
else
let b:did_ftplugin = 1
endif
if exists('s:did_function_definitions')
call s:SetErlangOptions()
finish
else
let s:did_function_definitions = 1
endif
let s:cpo_save = &cpo
set cpo&vim
if !exists('g:erlang_keywordprg')
let g:erlang_keywordprg = 'erl -man'
endif
if !exists('g:erlang_folding')
let g:erlang_folding = 0
endif
let s:erlang_fun_begin = '^\a\w*(.*$'
let s:erlang_fun_end = '^[^%]*\.\s*\(%.*\)\?$'
function s:SetErlangOptions()
if g:erlang_folding
setlocal foldmethod=expr
setlocal foldexpr=GetErlangFold(v:lnum)
setlocal foldtext=ErlangFoldText()
endif
setlocal comments=:%%%,:%%,:%
setlocal commentstring=%%s
setlocal formatoptions+=ro
let &l:keywordprg = g:erlang_keywordprg
endfunction
function GetErlangFold(lnum)
let lnum = a:lnum
let line = getline(lnum)
if line =~ s:erlang_fun_end
return '<1'
endif
if line =~ s:erlang_fun_begin && foldlevel(lnum - 1) == 1
return '1'
endif
if line =~ s:erlang_fun_begin
return '>1'
endif
return '='
endfunction
function ErlangFoldText()
let line = getline(v:foldstart)
let foldlen = v:foldend - v:foldstart + 1
let lines = ' ' . foldlen . ' lines: ' . substitute(line, "[\ \t]*", '', '')
if foldlen < 10
let lines = ' ' . lines
endif
let retval = '+' . v:folddashes . lines
return retval
endfunction
call s:SetErlangOptions()
let b:undo_ftplugin = "setlocal foldmethod< foldexpr< foldtext<"
\ . " comments< commentstring< formatoptions<"
let &cpo = s:cpo_save
unlet s:cpo_save
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