diff --git a/runtime/indent/tcl.vim b/runtime/indent/tcl.vim
new file mode 100644
index 0000000..326575e
--- /dev/null
+++ b/runtime/indent/tcl.vim
@@ -0,0 +1,123 @@
+" Vim indent file
+" Language:	    Tcl
+" Maintainer:	    Nikolai Weibull <source@pcppopper.org>
+" URL:		    http://www.pcppopper.org/vim/indent/pcp/tcl/
+" Latest Revision:  2004-05-21
+" arch-tag:	    64fab1fa-d670-40ab-a191-55678f20ceb0
+
+" only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+
+let b:did_indent = 1
+
+setlocal indentexpr=GetTclIndent()
+setlocal indentkeys-=:,0#
+setlocal indentkeys+=0]
+
+" only define the function once.
+if exists("*GetTclIndent")
+  finish
+endif
+
+function s:PrevNonBlankNonComment(lnum)
+  let lnum = prevnonblank(a:lnum)
+  while lnum > 0
+    let line = getline(lnum)
+    if line !~ '^\s*\(#\|$\)'
+      break
+    endif
+    let lnum = prevnonblank(lnum - 1)
+  endwhile
+  return lnum
+endfunction
+
+function! GetTclIndent()
+  let lnum = s:PrevNonBlankNonComment(v:lnum - 1)
+
+  if lnum == 0
+    return 0
+  endif
+
+  let line = getline(lnum)
+  let ind = indent(lnum)
+
+  " TODO: Possible improvement, check that 'begin' and 'end' aren't inside a
+  " comment or string.  This will mess it up.  As I am pressed for time and
+  " stuff like this is unlikely to happen I won't deal with it in this
+  " version.
+  let open = 0
+  let begin = match(line, '{', 0)
+  while begin > -1
+    let end = match(line, '}', begin + 1)
+    if end < 0
+      let open = open + 1
+    else
+      let tmp = match(line, '{', begin + 1)
+      if tmp != -1 && tmp < end
+	let open = open + 1
+      endif
+    endif
+    let begin = match(line, '{', begin + 1)
+  endwhile
+
+  let begin = match(line, '[', 0)
+  while begin > -1
+    let end = match(line, ']', begin + 1)
+    if end < 0
+      let open = open + 1
+    else
+      let tmp = match(line, '{', begin + 1)
+      if tmp != -1 && tmp < end
+	let open = open + 1
+      endif
+    endif
+    let begin = match(line, '{', begin + 1)
+  endwhile
+
+  let close = 0
+  let prev = 0
+  let end = matchend(line, '^\s*}.*}', prev)
+  while end > -1
+    let begin = match(line, '{', prev + 1)
+    if begin < 0 || begin > prev
+      let close = close + 1
+    endif
+    let prev = end
+    let end = match(line, '}', prev + 1)
+  endwhile
+
+  let prev = 0
+  let end = match(line, ']', prev)
+  while end > -1
+    let begin = match(line, '[', prev + 1)
+    if begin < 0 || begin > prev
+      let close = close + 1
+    endif
+    let prev = end
+    let end = match(line, ']', prev + 1)
+  endwhile
+
+  let ind = ind + (open - close) * &sw
+
+  let line = getline(v:lnum)
+
+  let close = 0
+  let prev = 0
+  let end = match(line, '}', prev)
+  while end > -1
+    let begin = match(line, '{', prev + 1)
+    if begin < 0 || begin > prev
+      let close = close + 1
+    endif
+    let prev = end
+    let end = match(line, '}', prev + 1)
+  endwhile
+
+  let ind = ind - close * &sw
+
+  return ind >= 0 ? ind : 0
+endfunction
+
+" vim: set sts=2 sw=2: