fixed syntax highlighting for tab stops > 9

syntax/snippet.vim

@@ -1,6 +1,8 @@
+" Syntax highlighting for snippet files (used for snipMate.vim)
+" Hopefully this should make snippets a bit nicer to write!
 syn match snipComment '^#.*'
-syn match placeHolder '\${\d\(:.\{-}\)\=}' contains=snipCommand
-syn match tabStop '\$\d'
+syn match placeHolder '\${\d\+\(:.\{-}\)\=}' contains=snipCommand
+syn match tabStop '\$\d\+'
 syn match snipCommand '`.\{-}`'
 syn match snippet '^snippet.*' transparent contains=multiSnipText,snipKeyword
 syn match multiSnipText '\w\+ \zs.*' contained