Improve patch file detection by adding a header rule. (#1942)

diff --git a/runtime/syntax/patch.yaml b/runtime/syntax/patch.yaml
index 452dd31cc30d6a50435e5c4c45151aea591eaf5f..996bdc38f5648371d2b119e3274aec9ed67aeaf3 100644 (file)
--- a/runtime/syntax/patch.yaml
+++ b/runtime/syntax/patch.yaml
@@ -1,7 +1,8 @@
 filetype: patch
 
-detect: 
+detect:
     filename: "\\.(patch|diff)$"
+    header: "^diff"
 
 rules:
     - brightgreen: "^\\+.*"