new file mode 100644
--- /dev/null
+++ b/runtime/indent/readline.vim
@@ -0,0 +1,48 @@
+" Vim indent file
+" Language:	    readline configuration file
+" Maintainer:	    Nikolai Weibull <source@pcppopper.org>
+" URL:		    http://www.pcppopper.org/vim/indent/pcp/readline/
+" Latest Revision:  2004-04-25
+" arch-tag:	    ee681235-3abf-4a42-8587-edabd409a980
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+
+let b:did_indent = 1
+
+setlocal indentexpr=GetReadlineIndent()
+setlocal indentkeys=!^F,o,O,=$else,=$endif
+
+" Only define the function once.
+if exists("*GetReadlineIndent")
+  finish
+endif
+
+function GetReadlineIndent()
+  let lnum = prevnonblank(v:lnum - 1)
+
+  if lnum == 0
+    return 0
+  endif
+
+  let line = getline(lnum)
+  let ind = indent(lnum)
+
+  " increase indent if previous line started with $if or $else
+  if  line =~ '^\s*$\(if\|else\)\>'
+    let ind = ind + &sw
+  endif
+
+  let line = getline(v:lnum)
+
+  " decrease indent if this line starts with $else or $endif
+  if line =~ '^\s*$\(else\|endif\)\>'
+    let ind = ind - &sw
+  endif
+
+  return ind
+endfunction
+
+" vim: set sts=2 sw=2: