" Vim indent file " Language: Lua script " Maintainer: Marcus Aurelius Farias " First Author: Max Ischenko " Last Change: 2007 Jul 23 " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal indentexpr=GetLuaIndent() " To make Vim call GetLuaIndent() when it finds '\s*end' or '\s*until' " on the current line ('else' is default and includes 'elseif'). setlocal indentkeys+=0=end,0=until setlocal autoindent " Only define the function once. if exists("*GetLuaIndent") finish endif function! GetLuaIndent() " Find a non-blank line above the current line. let prevlnum = prevnonblank(v:lnum - 1) " Hit the start of the file, use zero indent. if prevlnum == 0 return 0 endif " Add a 'shiftwidth' after lines that start a block: " 'function', 'if', 'for', 'while', 'repeat', 'else', 'elseif', '{' let ind = indent(prevlnum) let prevline = getline(prevlnum) let midx = match(prevline, '^\s*\%(if\>\|for\>\|while\>\|repeat\>\|else\>\|elseif\>\|do\>\|then\>\)') if midx == -1 let midx = match(prevline, '{\s*$') if midx == -1 let midx = match(prevline, '\\s*\%(\k\|[.:]\)\{-}\s*(') endif endif if midx != -1 " Add 'shiftwidth' if what we found previously is not in a comment and " an "end" or "until" is not present on the same line. if synIDattr(synID(prevlnum, midx + 1, 1), "name") != "luaComment" && prevline !~ '\\|\' let ind = ind + &shiftwidth endif endif " Subtract a 'shiftwidth' on end, else (and elseif), until and '}' " This is the part that requires 'indentkeys'. let midx = match(getline(v:lnum), '^\s*\%(end\|else\|until\|}\)') if midx != -1 && synIDattr(synID(v:lnum, midx + 1, 1), "name") != "luaComment" let ind = ind - &shiftwidth endif return ind endfunction