$ 4 ?띈쭜?뜹늽$ 4 syntax "(.*?)"\s+"(.*)"+ 4 \.*load_pct=(\d+)\.* 4 \\w*-- 4 duplicate\\s+key 4 (?m)^@k8s-(ci|ro)?bot tell me a joke[,.?!]*\r?$ 4 ([\]\[\(\)\{\}\<\>]) 4 ^__meta_(my.*) 4 /api/clouds/([^/]+)/security_groups 4...