# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1528802571 -7200
# Node ID 8300a45fc074e811da92f58d92f67050932cb7c9
# Parent  b60c5dcb85a3580e219f3010f54e067b0547b36a
Attempt to avoid problems with page titles containing question marks by doing a
broader search and then filtering with a properly-escaped regular expression.

diff -r b60c5dcb85a3 -r 8300a45fc074 SubpageComments.py
--- a/SubpageComments.py	Wed Nov 06 15:13:28 2013 +0100
+++ b/SubpageComments.py	Tue Jun 12 13:22:51 2018 +0200
@@ -2,11 +2,12 @@
 """
     MoinMoin - SubpageComments common functionality
 
-    @copyright: 2013 by Paul Boddie <paul@boddie.org.uk>
+    @copyright: 2013, 2018 by Paul Boddie <paul@boddie.org.uk>
     @license: GNU GPL (v2 or later), see COPYING.txt for details.
 """
 
 from MoinSupport import getPagesForSearch
+import re
 
 def get_comment_numbers(pagename, request):
 
@@ -17,7 +18,16 @@
 
     pagenames = []
 
-    for page in getPagesForSearch("title:regex:^%s/" % pagename, request):
+    pattern = "^%s" % re.escape("%s/" % pagename)
+    regex = re.compile(pattern)
+
+    for page in getPagesForSearch("title:%s" % pagename, request):
+
+        # Avoid "title:regex:^%s/" problems by filtering a broader result set.
+
+        if not regex.search(page.page_name):
+            continue
+
         basename, number = page.page_name.rsplit("/", 1)
         if basename == pagename and number.isdigit():
             pagenames.append(int(number))