# HG changeset patch
# User Mike Miller <mtmiller@ieee.org>
# Date 1366483165 14400
# Node ID ab46b5c77669934edfe50cd02b23d93089a179b5
# Parent  4bbc4b703fe4cdf33dded840bc5f1f402a81fd11
Fix word boundary handling in regexp pattern (bug #38778)

* libinterp/corefcn/regexp.cc (do_regexp_ptn_string_escapes): Expand both
'\<' and '\>' sequences to '\b' for PCRE to handle correctly.

diff --git a/libinterp/corefcn/regexp.cc b/libinterp/corefcn/regexp.cc
--- a/libinterp/corefcn/regexp.cc
+++ b/libinterp/corefcn/regexp.cc
@@ -70,6 +70,13 @@
               retval[i] = '\b';
               break;
 
+            // Translate \< and \> to PCRE word boundary
+            case '<': // begin word boundary
+            case '>': // end word boundary
+              retval[i] = '\\';
+              retval[++i] = 'b';
+              break;
+
 #if 0
 // FIXME : To be complete, we need to handle \oN, \o{N}.
 //         The PCRE library already handles \N where N