syntax: xml: recognize an XML file also by its first line

Some .rdf files are XML, but the .rdf extension seems to be used also for other things. So... use the 'header' mechanism.

syntax: xml: recognize an XML file also by its first line
Some .rdf files are XML, but the .rdf extension seems to be used also for other things. So... use the 'header' mechanism.
a3102cd4 · Benno Schulenberg · da678835 · a3102cd4
Commit a3102cd4 authored 7 years ago by Benno Schulenberg
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--- a/syntax/xml.nanorc
+++ b/syntax/xml.nanorc
 ## Here is an example for XML files.

 syntax "xml" "\.([jrsx]html?|jnlp|mml|pom|rng|sgml?|svg|w[as]dl|wsdd|xjb|xml|xs(d|lt?)|xul)$"
+header "<\?xml.*version=.*\?>"
 magic "(XML|SGML) (sub)?document text"
 comment "<!--|-->"