about regexp...

[Kyung won Cheon]

"aaabbxccc".sub(/bb(.)c/, "\\1.upcase")
=> "aaax.upcasecc" # I expect 'aaaXcc'

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# Help Me^^
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[Peña, Botp]

RnJvbTogS3l1bmcgd29uIENoZW9uIFttYWlsdG86a2RyZWFtOTVAZ21lcmNlLmNvLmtyXSANCiMg
Pj4gImFhYWJieGNjYyIuc3ViKC9iYiguKWMvLCAiXFwxLnVwY2FzZSIpDQojID0+ICJhYWF4LnVw
Y2FzZWNjIiAgIyBJIGV4cGVjdCAnYWFhWGNjJw0KDQpjb25zaWRlciwNCg0KPiAiXFwxLnVwY2Fz
ZSINCj0+ICJcXDEudXBjYXNlIg0KDQo+ICJcXDEiLnVwY2FzZQ0KPT4gIlxcMSINCg0KDQp0cnks
DQoNCiAiYWFhYmJ4Y2NjIi5zdWIoL2JiKC4pYy8pIHskMS51cGNhc2V9DQoNCg==

 

[Joel VanderWerf]

=> "aaax.upcasecc" # I expect 'aaaXcc'

=> "aaaXcc"