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ruby.vim
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2001-09-26
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" Vim indent file
" Language: Ruby
" Maintainer: Matt Armstrong <matt@lickey.com>
" Last Change: 2001 Jul 28
" URL: http://www.lickey.com/env/vim/indent/ruby.vim
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal indentexpr=GetRubyIndent()
setlocal nolisp
setlocal nosmartindent
setlocal autoindent
setlocal indentkeys+==end,=else,=elsif,=when,=ensure,=rescue
" Only define the function once.
if exists("*GetRubyIndent")
finish
endif
function GetRubyIndent()
" Find a non-blank line above the current line.
let lnum = prevnonblank(v:lnum - 1)
" At the start of the file use zero indent.
if lnum == 0
return 0
endif
" If the line trailed with a *, +, comma, . or (, trust the user
if getline(lnum) =~ '\(\*\|\.\|+\|,\|(\)\(\s*#.*\)\=$'
return -1
endif
" Add a 'shiftwidth' after lines beginning with:
" module, class, dev, if, for, while, until, else, elsif, case, when, {
let ind = indent(lnum)
let flag = 0
if getline(lnum) =~ '^\s*\(module\>\|class\>\|def\>\|if\>\|for\>\|while\>\|until\>\|else\>\|elsif\>\|case\>\|when\>\|unless\|begin\|ensure\>\|rescue\>\)' || getline(lnum) =~ '{\s*$' || getline(lnum) =~ '\({\|\<do\>\).*|.*|\s*$' || getline(lnum) =~ '\<do\>\(\s*#.*\)\=$'
let ind = ind + &sw
let flag = 1
endif
" Subtract a 'shiftwidth' after lines ending with
" "end" when they begin with while, if, for, until
if flag == 1 && getline(lnum) =~ '\<end\>\(\s*#.*\)\=$'
let ind = ind - &sw
endif
" Subtract a 'shiftwidth' on end, else and, elsif, when and }
if getline(v:lnum) =~ '^\s*\(end\>\|else\>\|elsif\>\|when\>\|ensure\>\|rescue\>\|}\)'
let ind = ind - &sw
endif
return ind
endfunction
" vim:sw=2