match blank nodes more according to spec

tpluscode · tpluscode · commit 5c935d336fdc · 2016-03-28T18:09:55.000+02:00
https://www.w3.org/TR/n-quads/#grammar-production-BLANK_NODE_LABEL
diff --git a/src/JsonLD/Core/RDFDatasetUtils.cs b/src/JsonLD/Core/RDFDatasetUtils.cs
@@ -546,7 +546,7 @@ private class Regex
         {
             public static readonly Pattern Iri = Pattern.Compile("(?:<([^>]*)>)");
 
-            public static readonly Pattern Bnode = Pattern.Compile("(_:(?:[A-Za-z][A-Za-z0-9]*))"
+            public static readonly Pattern Bnode = Pattern.Compile("(_:(?:[A-Za-z0-9](?:[A-Za-z0-9\\-\\.]*[A-Za-z0-9])?))"
                 );
 
             public static readonly Pattern Plain = Pattern.Compile("\"([^\"\\\\]*(?:\\\\.[^\"\\\\]*)*)\""

Original file line number	Diff line number	Diff line change
`@@ -546,7 +546,7 @@ private class Regex`
`546`	`546`	`{`
`547`	`547`	`public static readonly Pattern Iri = Pattern.Compile("(?:<([^>]*)>)");`
`548`	`548`
`549`		`- public static readonly Pattern Bnode = Pattern.Compile("(_:(?:[A-Za-z][A-Za-z0-9]*))"`
	`549`	`+ public static readonly Pattern Bnode = Pattern.Compile("(_:(?:[A-Za-z0-9](?:[A-Za-z0-9\\-\\.]*[A-Za-z0-9])?))"`
`550`	`550`	`);`
`551`	`551`
`552`	`552`	`public static readonly Pattern Plain = Pattern.Compile("\"([^\"\\\\](?:\\\\.[^\"\\\\])*)\""`