-my %patmap = ('*' => '[^/]*?', '?' => '[^/]', '[' => '[', ']' => ']');
-sub glob2pat {
- my ($glob) = @_;
- $glob =~ s!(.)!$patmap{$1} || "\Q$1"!ge;
- $glob;
+# TODO: we will probably extract glob2re into a separate module for
+# PublicInbox::Filter::Base and maybe other places
+my %re_map = ( '*' => '[^/]*?', '?' => '[^/]',
+ '[' => '[', ']' => ']', ',' => ',' );
+
+sub glob2re {
+ my ($re) = @_;
+ my $p = '';
+ my $in_bracket = 0;
+ my $qm = 0;
+ my $schema_host_port = '';
+
+ # don't glob URL-looking things that look like IPv6
+ if ($re =~ s!\A([a-z0-9\+]+://\[[a-f0-9\:]+\](?::[0-9]+)?/)!!i) {
+ $schema_host_port = quotemeta $1; # "http://[::1]:1234"
+ }
+ my $changes = ($re =~ s!(.)!
+ $re_map{$p eq '\\' ? '' : do {
+ if ($1 eq '[') { ++$in_bracket }
+ elsif ($1 eq ']') { --$in_bracket }
+ elsif ($1 eq ',') { ++$qm } # no change
+ $p = $1;
+ }} // do {
+ $p = $1;
+ ($p eq '-' && $in_bracket) ? $p : (++$qm, "\Q$p")
+ }!sge);
+ # bashism (also supported by curl): {a,b,c} => (a|b|c)
+ $changes += ($re =~ s/([^\\]*)\\\{([^,]*,[^\\]*)\\\}/
+ (my $in_braces = $2) =~ tr!,!|!;
+ $1."($in_braces)";
+ /sge);
+ ($changes - $qm) ? $schema_host_port.$re : undef;