From 1d8c7dd86a8c5a542bfa01810965796e5dfbbf72 Mon Sep 17 00:00:00 2001
From: Bas Leijdekkers <basleijdekkers@gmail.com>
Date: Mon, 29 Aug 2016 11:46:40 +0200
Subject: [PATCH] regexp: add AsciiUtil.isLetter()

---
 RegExpSupport/src/org/intellij/lang/regexp/AsciiUtil.java    | 4 ++++
 RegExpSupport/src/org/intellij/lang/regexp/RegExpParser.java | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/RegExpSupport/src/org/intellij/lang/regexp/AsciiUtil.java b/RegExpSupport/src/org/intellij/lang/regexp/AsciiUtil.java
index 08a11fe21877..fe42d8ebb247 100644
--- a/RegExpSupport/src/org/intellij/lang/regexp/AsciiUtil.java
+++ b/RegExpSupport/src/org/intellij/lang/regexp/AsciiUtil.java
@@ -30,6 +30,10 @@ public final class AsciiUtil {
     return c >= 'a' && c <= 'z';
   }
 
+  public static boolean isLetter(char c) {
+    return isUpperCase(c) || isLowerCase(c);
+  }
+
   public static boolean isDigit(char c) {
     return c >= '0' && c <= '9';
   }
diff --git a/RegExpSupport/src/org/intellij/lang/regexp/RegExpParser.java b/RegExpSupport/src/org/intellij/lang/regexp/RegExpParser.java
index 6b4bb062bf0b..06a6d3f3c77e 100644
--- a/RegExpSupport/src/org/intellij/lang/regexp/RegExpParser.java
+++ b/RegExpSupport/src/org/intellij/lang/regexp/RegExpParser.java
@@ -478,7 +478,7 @@ public class RegExpParser implements PsiParser {
   private static boolean isLetter(CharSequence text) {
     assert text.length() == 1;
     final char c = text.charAt(0);
-    return AsciiUtil.isUpperCase(c) || AsciiUtil.isLowerCase(c);
+    return AsciiUtil.isLetter(c);
   }
 
   private void parseProperty(PsiBuilder builder) {