Fixed support for '\cX' regexps: CTRL added to set of possible chars.

RegExpSupport/src/org/intellij/lang/regexp/RegExpTT.java

@@ -121,6 +121,7 @@ public interface RegExpTT {
             ESC_CTRL_CHARACTER,
             ESC_CHARACTER,
             CTRL_CHARACTER,
+            CTRL,
             UNICODE_CHAR,
             HEX_CHAR, BAD_HEX_VALUE,
             OCT_CHAR, BAD_OCT_VALUE,

RegExpSupport/testData/RETest.xml

@@ -603,6 +603,22 @@
       <pattern>\Q\j\E</pattern>
       <expected>OK</expected>
     </test>
+    <test>
+      <pattern>\c0</pattern>
+      <expected>OK</expected>
+    </test>
+    <test>
+      <pattern>\C-0</pattern>
+      <expected>OK</expected>
+    </test>
+    <test>
+      <pattern>\M-0</pattern>
+      <expected>OK</expected>
+    </test>
+    <test>
+      <pattern>\M-\C-0</pattern>
+      <expected>OK</expected>
+    </test>
   </escapes>
 
   <anchors>