Merge branch 'charclass'

* charclass: (24 commits)
  www: require ASCII word characters for CSS filenames
  www: require ASCII range for mbox downloads
  githttpbackend: require ASCII in path
  require ASCII digits for local FS items
  www: require ASCII digit for git epoch
  solver|viewdiff: restrict digit matches to ASCII
  inbox: require ASCII digits for feedmax var
  filter/rubylang: require ASCII digit for mailcount
  msgtime: require ASCII digits for parsing dates
  searchview: do not allow non-ASCII offsets and limits
  githttpbackend: require Range:, Status: to be ASCII digits
  view: require YYYYmmDD(HHMMSS) timestamps to be ASCII
  newswww: only accept ASCII digits as article numbers
  config: do not accept non-ASCII digits in cgitrc params
  www: require ASCII filenames in git blob downloads
  www: only emit ASCII chars in attachment filenames
  wwwattach: only pass the charset through if ASCII
  wwwlisting: require ASCII digit for port number
  http: require SERVER_PORT to be ASCII digit
  feed: only accept ASCII digits for ref~$N
  ...

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index a04838a1..ae071895 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -102,7 +102,7 @@ sub recent_msgs {
         my $hex = '[a-f0-9]';
         my $addmsg = qr!^:000000 100644 \S+ (\S+) A\t${hex}{2}/${hex}{38}$!;
         my $delmsg = qr!^:100644 000000 (\S+) \S+ D\t(${hex}{2}/${hex}{38})$!;
-        my $refhex = qr/(?:HEAD|${hex}{4,40})(?:~\d+)?/;
+        my $refhex = qr/(?:HEAD|${hex}{4,40})(?:~[0-9]+)?/;
 
         # revision ranges may be specified
         my $range = 'HEAD';