CustomModule.Type does not highlight CustomModule as a type anymore. (#199)

Author: MikaelMayer

src/test/highlight/regression-highlight.dfy

@@ -1,3 +1,10 @@
+// Issue #194
+method f(x: OtherModule.CustomType, z: int) {
+          //^ module should be white, `CustomType` should be blue
+  var y := OtherModule.methodName();
+}
+
+
 // Issue #176
 class ClassList {
   ghost var classes: set<string>

syntaxes/Dafny.tmLanguage

@@ -487,7 +487,7 @@
 				</dict>
 				<dict>
 					<key>begin</key>
-					<string>(?<!\{|:):\s*([\w'?]+\b(?!&lt;))</string>
+					<string>(?<!\{|:):\s*(?:[\w'?]+\.)*([\w'?]+\b(?!&lt;))</string>
 					<key>beginCaptures</key>
 					<dict>
 						<key>1</key>