Update vim syntax for extern crate

Author: lilyball

src/etc/vim/syntax/rust.vim

@@ -3,7 +3,7 @@
 " Maintainer:   Patrick Walton <pcwalton@mozilla.com>
 " Maintainer:   Ben Blum <bblum@cs.cmu.edu>
 " Maintainer:   Chris Morgan <me@chrismorgan.info>
-" Last Change:  2014 Jan 4
+" Last Change:  2014 Feb 14
 
 if version < 600
   syntax clear
@@ -18,7 +18,8 @@ syn keyword   rustOperator    as
 
 syn match     rustAssert      "\<assert\(\w\)*!" contained
 syn match     rustFail        "\<fail\(\w\)*!" contained
-syn keyword   rustKeyword     break continue do extern
+syn keyword   rustKeyword     break continue do
+syn keyword   rustKeyword     extern nextgroup=rustExternCrate skipwhite
 syn keyword   rustKeyword     for in if impl let
 syn keyword   rustKeyword     loop once priv pub
 syn keyword   rustKeyword     return
@@ -31,6 +32,10 @@ syn keyword   rustKeyword     proc
 syn keyword   rustStorage     mut ref static
 syn keyword   rustObsoleteStorage const
 
+syn keyword   rustInvalidBareKeyword crate
+
+syn keyword   rustExternCrate crate contained nextgroup=rustIdentifier skipwhite
+
 syn match     rustIdentifier  contains=rustIdentifierPrime "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained
 syn match     rustFuncName    "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained
 
@@ -245,6 +250,8 @@ hi def link rustDeriving      PreProc
 hi def link rustStorage       StorageClass
 hi def link rustObsoleteStorage Error
 hi def link rustLifetime      Special
+hi def link rustInvalidBareKeyword Error
+hi def link rustExternCrate   rustKeyword
 
 " Other Suggestions:
 " hi rustAttribute ctermfg=cyan