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2001-09-26
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2KB
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53 lines
" Vim indent file
" Language: Lua script
" Maintainer: Max Ischenko <mfi@ukr.net>
" Last Change: 2001 Sep 02
" Only define the function once.
if exists("*GetLuaIndent") | finish | endif
setlocal indentexpr=GetLuaIndent()
setlocal autoindent
function! GetLuaIndent()
" Find a non-blank line above the current line.
let lnum = prevnonblank(v:lnum - 1)
" Hit 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*\(function\>\|if\>\|for\>\|while\>\|until\>\|else\>\|elsif\>\)' || getline(lnum) =~ '{\s*$' || getline(lnum) =~ '\({\|\<do\>\).*|.*|\s*$' || getline(lnum) =~ '\<do\>\(\s*#.*\)\=$' || getline(lnum) =~ '\(\s*=\s*function\)'
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*\(end\>\|else\>\|elsif\>\|}\)'
let ind = ind - &sw
endif
" Subtract a 'shiftwidth' on end, else and, elsif, when and }
if getline(v:lnum) =~ '\(\<end\>\)'
" let ind = ind - &sw
endif
return ind
endfunction