From 21741ad09eb0486f4737f28c71a5cecefbf87f27 Mon Sep 17 00:00:00 2001
From: Owen Stephens <owen@ostephens.com>
Date: Tue, 28 Nov 2017 16:22:17 +0000
Subject: [PATCH] Pass user friendly error message to UI on invalid regular
 expression

---
 .../com/google/refine/browsing/facets/TextSearchFacet.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/main/src/com/google/refine/browsing/facets/TextSearchFacet.java b/main/src/com/google/refine/browsing/facets/TextSearchFacet.java
index 03c6c1cf9..e8270d4fc 100644
--- a/main/src/com/google/refine/browsing/facets/TextSearchFacet.java
+++ b/main/src/com/google/refine/browsing/facets/TextSearchFacet.java
@@ -50,6 +50,7 @@ import com.google.refine.expr.Evaluable;
 import com.google.refine.grel.ast.VariableExpr;
 import com.google.refine.model.Column;
 import com.google.refine.model.Project;
+import com.google.refine.util.PatternSyntaxExceptionParser;
 
 public class TextSearchFacet implements Facet {
     /*
@@ -106,7 +107,8 @@ public class TextSearchFacet implements Facet {
                             _query, 
                             _caseSensitive ? 0 : Pattern.CASE_INSENSITIVE);
                 } catch (java.util.regex.PatternSyntaxException e) {
-                    throw new JSONException(e);
+                    PatternSyntaxExceptionParser err = new PatternSyntaxExceptionParser(e);
+                    throw new JSONException(err.getUserMessage());
                 }
             } else if (!_caseSensitive) {
                 _query = _query.toLowerCase();