new file mode 100644
--- /dev/null
+++ b/runtime/indent/lua.vim
@@ -0,0 +1,49 @@
+" Vim indent file
+" Language:	Lua script
+" Maintainer:	Marcus Aurelius Farias <marcuscf@vant.com.br>
+" First Author:	Max Ischenko <mfi@ukr.net>
+" Last Change:	2003 Jan 20
+
+" Only define the function once.
+if exists("*GetLuaIndent") | finish | endif
+
+setlocal indentexpr=GetLuaIndent()
+
+" To make Vim call GetLuaIndent() when it finds '\s*end' or '\s*until'
+" on the current line (else is default).
+setlocal indentkeys+=0=end,0=until
+
+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
+
+  " Add a 'shiftwidth' after lines beginning with:
+  " function, if, for, while, repeat, else, elseif, '{'
+  let ind = indent(lnum)
+  let flag = 0
+  if getline(lnum) =~ '^\s*\(function\>\|if\>\|for\>\|while\>\|repeat\>\|else\>\|elseif\>\|do\>\)' || getline(lnum) =~ '{\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, etc.
+  if flag == 1 && getline(lnum) =~ '\<end\>\|\<until\>'
+    let ind = ind - &sw
+  endif
+
+  " Subtract a 'shiftwidth' on end, else (and elseif), until and '}'
+  " This is the part that requires 'indentkeys'.
+  if getline(v:lnum) =~ '^\s*\(end\|else\|until\|}\)'
+    let ind = ind - &sw
+  endif
+
+  return ind
+endfunction