1" Vim indent file 2" Language: Lua script 3" Maintainer: Marcus Aurelius Farias <marcus.cf 'at' bol.com.br> 4" First Author: Max Ischenko <mfi 'at' ukr.net> 5" Last Change: 2005 Jun 23 6 7" Only load this indent file when no other was loaded. 8if exists("b:did_indent") 9 finish 10endif 11let b:did_indent = 1 12 13setlocal indentexpr=GetLuaIndent() 14 15" To make Vim call GetLuaIndent() when it finds '\s*end' or '\s*until' 16" on the current line ('else' is default and includes 'elseif'). 17setlocal indentkeys+=0=end,0=until 18 19setlocal autoindent 20 21" Only define the function once. 22if exists("*GetLuaIndent") 23 finish 24endif 25 26function! GetLuaIndent() 27 " Find a non-blank line above the current line. 28 let lnum = prevnonblank(v:lnum - 1) 29 30 " Hit the start of the file, use zero indent. 31 if lnum == 0 32 return 0 33 endif 34 35 " Add a 'shiftwidth' after lines that start a block: 36 " 'function', 'if', 'for', 'while', 'repeat', 'else', 'elseif', '{' 37 let ind = indent(lnum) 38 let flag = 0 39 let prevline = getline(lnum) 40 if prevline =~ '^\s*\%(if\>\|for\>\|while\>\|repeat\>\|else\>\|elseif\>\|do\>\|then\>\)' 41 \ || prevline =~ '{\s*$' || prevline =~ '\<function\>\s*\%(\k\|[.:]\)\{-}\s*(' 42 let ind = ind + &shiftwidth 43 let flag = 1 44 endif 45 46 " Subtract a 'shiftwidth' after lines ending with 47 " 'end' when they begin with 'while', 'if', 'for', etc. too. 48 if flag == 1 && prevline =~ '\<end\>\|\<until\>' 49 let ind = ind - &shiftwidth 50 endif 51 52 " Subtract a 'shiftwidth' on end, else (and elseif), until and '}' 53 " This is the part that requires 'indentkeys'. 54 if getline(v:lnum) =~ '^\s*\%(end\|else\|until\|}\)' 55 let ind = ind - &shiftwidth 56 endif 57 58 return ind 59endfunction 60