[gtksourceview] rust.lang: Add invalid char and byte highlight

[Garrett Regier <gregier src gnome org>]

commit 4aa55473f7d5457bb119dc772126b85d0e03d68c
Author: Garrett Regier <garrettregier gmail com>
Date:   Fri Aug 26 10:07:09 2016 -0700

    rust.lang: Add invalid char and byte highlight

 data/language-specs/rust.lang |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/data/language-specs/rust.lang b/data/language-specs/rust.lang
index 744cb38..8d0efea 100644
--- a/data/language-specs/rust.lang
+++ b/data/language-specs/rust.lang
@@ -270,10 +270,18 @@ except according to those terms.
       <match extended="true">'([^\\']|\\\%{common-escape}|\\\%{unicode-escape})'</match>
     </context>
 
+    <context id="invalid-char" style-ref="error">
+      <match extended="true">'([^\\']|\\\%{common-escape}|\\\%{unicode-escape}){2,}'</match>
+    </context>
+
     <context id="byte" style-ref="char">
       <match extended="true">b'([^\\']|\\\%{common-escape})'</match>
     </context>
 
+    <context id="invalid-byte" style-ref="error">
+      <match extended="true">b'([^\\']|\\\%{common-escape}){2,}'</match>
+    </context>
+
     <context id="attribute" style-ref="attribute" class="attribute">
       <start extended="true">\#!?\[</start>
       <end>\]</end>
@@ -302,7 +310,9 @@ except according to those terms.
         <context ref="byte-string"/>
         <context ref="raw-string"/>
         <context ref="char"/>
+        <context ref="invalid-char"/>
         <context ref="byte"/>
+        <context ref="invalid-byte"/>
         <context ref="lifetime"/>
         <context ref="attribute"/>
       </include>