hopefully this is merged in urxvt within the current decade

0001-fix-bug-where-unicode-doesnt-get-parsed-in-matcher.patch

From c5c4bf378e9dbf546f5615582fb020854bb7bbc2 Mon Sep 17 00:00:00 2001
From: ckath <ckat@teknik.io>
Date: Fri, 8 Jan 2021 14:49:56 +0100
Subject: [PATCH] fix bug where unicode doesnt get parsed in matcher

this was caused by text not being (correctly) decoded, special_decoding
it before matching fixes this
---
 src/perl/matcher | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/perl/matcher b/src/perl/matcher
index d991d68a..44fae579 100644
--- a/src/perl/matcher
+++ b/src/perl/matcher
@@ -271,7 +271,7 @@ sub on_line_update {
 
    # fetch the line that has changed
    my $line = $self->line ($row);
-   my $text = $line->t;
+   my $text = $self->special_decode ($line->t);
    my $rend;
 
    # find all urls (if any)
@@ -303,7 +303,7 @@ sub valid_button {
 sub find_matches {
    my ($self, $row, $col) = @_;
    my $line = $self->line ($row);
-   my $text = $line->t;
+   my $text = $self->special_decode ($line->t);
    my $off = $line->offset_of ($row, $col) if defined $col;
 
    my @matches;
-- 
2.30.0