From 06d844e145413f523cccf7f53fa71c78b0ab6f3c Mon Sep 17 00:00:00 2001
From: Bas Leijdekkers <basleijdekkers@gmail.com>
Date: Sun, 26 Oct 2014 20:20:31 +0100
Subject: [PATCH] catch AbstractMethodError for old api clients

---
 .../src/org/intellij/lang/regexp/RegExpLanguageHosts.java  | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/RegExpSupport/src/org/intellij/lang/regexp/RegExpLanguageHosts.java b/RegExpSupport/src/org/intellij/lang/regexp/RegExpLanguageHosts.java
index ec2b9192c2d5..c1cff8aff61e 100644
--- a/RegExpSupport/src/org/intellij/lang/regexp/RegExpLanguageHosts.java
+++ b/RegExpSupport/src/org/intellij/lang/regexp/RegExpLanguageHosts.java
@@ -79,7 +79,12 @@ public final class RegExpLanguageHosts extends ClassExtension<RegExpLanguageHost
       return true;
     }
     final RegExpLanguageHost host = findRegExpHost(regExpChar);
-    return host != null && host.supportsExtendedHexCharacter(regExpChar);
+    try {
+      return host != null && host.supportsExtendedHexCharacter(regExpChar);
+    } catch (AbstractMethodError e) {
+      // supportsExtendedHexCharacter not present
+      return false;
+    }
   }
 
   public boolean supportsNamedGroupSyntax(@Nullable final RegExpGroup group) {