[CentOS] Proxy password questions

Hello All: I'm having a strange issue with the yum proxy settings. It is directly related to passwords containing exclamation points.

For example, the following works fine in yum.conf: http_proxy=http://somentlmproxy.somecompany.com http_password=regularpassword

However, if the password contains any exclamation points, it will not authenticate properly. E.g., a password such as "TheyKilledKenny!!" will fail, but "TheyKilledKenny??" will work fine.

I've tried exporting http_proxy from the command line and escaping the exclamation points: http_proxy=http://klowe:TheyKilledKenny%5C!%5C!@somentlmproxy.xxx.com:80 but no success.

Any workarounds to get this going? Unfortunately, I do not have any control over the password.