[gtksourceview] css.lang: Match the slash symbol in font declarations

[Sébastien Wilmet <swilmet src gnome org>]

commit a8c4ef0925e9db9bcf03c21e8bf88745e926e6a4
Author: Jeffery To <jeffery to gmail com>
Date:   Thu May 24 04:45:55 2018 +0800

    css.lang: Match the slash symbol in font declarations

 data/language-specs/css.lang       | 5 +++++
 tests/syntax-highlighting/file.css | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/data/language-specs/css.lang b/data/language-specs/css.lang
index e1c3ad93..c992eb4a 100644
--- a/data/language-specs/css.lang
+++ b/data/language-specs/css.lang
@@ -192,6 +192,10 @@
       </include>
     </context>
 
+    <context id="slash" style-ref="symbol">
+      <match>/</match>
+    </context>
+
     <context id="comma" style-ref="delimiter">
       <match>,</match>
     </context>
@@ -1487,6 +1491,7 @@
         <context ref="function-call"/>
         <context ref="property-value-keyword"/>
         <context ref="data-value"/>
+        <context ref="slash"/>
         <context ref="comma"/> <!-- for lists -->
       </include>
     </context>
diff --git a/tests/syntax-highlighting/file.css b/tests/syntax-highlighting/file.css
index 44f2aac9..04c96786 100644
--- a/tests/syntax-highlighting/file.css
+++ b/tests/syntax-highlighting/file.css
@@ -29,7 +29,7 @@
 
 /* case insensitivity */
 Body {
-    FONT: 12Px iTaLiC sans-SERIF;
+    FONT: 12Px/16pX iTaLiC sans-SERIF;
 }