URIimap: canonicalize uppercases UIDVALIDITY parameter

And the UID one, too, as well.  This simplifies future
comparison and matching code once case is no longer
taken into account.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/PublicInbox/URIimap.pm b/lib/PublicInbox/URIimap.pm
index dc193468..df9f5fd9 100644
--- a/lib/PublicInbox/URIimap.pm
+++ b/lib/PublicInbox/URIimap.pm
@@ -30,6 +30,9 @@ sub canonical {
         my ($scheme, $auth, $path, $query, $_frag) = uri_split($$self);
         $path =~ s!\A/+!/!; # excessive leading slash
 
+        # upper-case uidvalidity= and uid= parameter names
+        $path =~ s/;([^=]+)=([^;]*)/;\U$1\E=$2/g;
+
         # lowercase the host portion
         $auth =~ s#\A(.*@)?(.*?)(?::([0-9]+))?\z#
                 my $ret = ($1//'').lc($2);