New language: XProc - an XML Pipeline language (W3C)

lib/linguist/languages.yml

@@ -1268,6 +1268,13 @@ XML:
   - .classpath
   - .project
 
+XProc:
+  type: programming
+  group: XML
+  primary_extension: .xpl
+  extensions:
+  - .xproc
+
 XQuery:
   type: programming
   color: "#2700e2"

samples/XProc/xproc.xpl

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<p:declare-step xmlns:p="http://www.w3.org/ns/xproc"
+    xmlns:c="http://www.w3.org/ns/xproc-step" version="1.0">
+    <p:input port="source">
+        <p:inline>
+            <doc>Hello world!</doc>
+        </p:inline>
+    </p:input>
+    <p:output port="result"/>
+    <p:identity/>
+</p:declare-step>