Change username in quotes when username changed or user deleted

[TheLaw]

When a user changes their name or a user is deleted, a problem that exists is that quotes which contains the user's prior username remains in quoted sections. I am hoping to find some addon or easy way to have that reference automatically change. For example:

My username is activeuser and I create a post that says "I want to join the FTP warez list like on AOL."

Someone else quotes me and the top of their post states my username and the post:

activeuser said:
"I want to join the FTP...

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Change username in quotes when username changed or user deleted

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