cherry-pick: allow "-" as abbreviation of '@{-1}'

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 80950c018d54f3bbb7b700286b4923d39cbe2d00..8d69ada04291e308e39e999d49278b7af602f28f 100755 (executable)
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -1086,7 +1086,7 @@ sub evaluate_and_validate_params {
        our $search_use_regexp = $input_params{'search_use_regexp'};
 
        our $searchtext = $input_params{'searchtext'};
-       our $search_regexp;
+       our $search_regexp = undef;
        if (defined $searchtext) {
                if (length($searchtext) < 2) {
                        die_error(403, "At least two characters are required for search parameter");