diff -rub a/syntax/xml.nanorc b/syntax/xml.nanorc
--- a/syntax/xml.nanorc	2022-04-08 17:13:15.000000000 +0800
+++ b/syntax/xml.nanorc	2022-07-25 16:59:05.041959714 +0800
@@ -1,6 +1,6 @@
 ## Syntax highlighting for XML files.
 
-syntax xml "\.([jrsx]html?|jnlp|mml|pom|rng|sgml?|svg|w[as]dl|wsdd|xjb|xml|xs(d|lt?)|xul)$"
+syntax xml "(\.([jrsx]html?|jnlp|mml|pom|rng|sgml?|svg|w[as]dl|wsdd|xjb|xml|xs(d|lt?)|xul)$|_patchinfo|_channel)"
 header "<\?xml.*version=.*\?>"
 magic "(XML|SGML) (sub)?document"
 comment "<!--|-->"