--- a/runtime/compiler/mcs.vim
+++ b/runtime/compiler/mcs.vim
@@ -1,7 +1,8 @@
 " Vim compiler file
 " Compiler:    Mono C# Compiler
 " Maintainer:  Jarek Sobiecki <harijari@go2.pl>
-" Latest Revision: 2006-06-18
+" Last Updated By: Peter Collingbourne
+" Latest Revision: 2012 Jul 19
 
 if exists("current_compiler")
   finish
@@ -12,13 +13,18 @@ let s:cpo_save = &cpo
 set cpo-=C
 
 setlocal errorformat=
+         \%D%.%#Project\ \"%f/%[%^/\"]%#\"%.%#,
+         \%X%.%#Done\ building\ project\ \"%f/%[%^/\"]%#\"%.%#,
+         \%-G%\\s%.%#,
+         \%E%f(%l):\ error\ CS%n:%m,
+         \%W%f(%l):\ warning\ CS%n:%m,
          \%E%f(%l\\,%c):\ error\ CS%n:%m,
          \%W%f(%l\\,%c):\ warning\ CS%n:%m,
          \%E%>syntax\ error\\,%m,%Z%f(%l\\,%c):\ error\ CS%n:%m,
          \%D%*\\a[%*\\d]:\ Entering\ directory\ `%f',
          \%X%*\\a[%*\\d]:\ Leaving\ directory\ `%f',
          \%DMaking\ %*\\a\ in\ %f,
-         \%G-%.%#
+         \%-G%.%#
 
 let &cpo = s:cpo_save
 unlet s:cpo_save