Autogenerate inline link from keyword or command

I'm interested in the option of being able to perform a command or handle a keyword in-text and generate the markdown or link for it.
Example:
"I'm talking about BUG2234" > Press Enter
Output:
"I'm talking about #BUG2234 - Spelling Mistake"

OR

"I'm talking about /bug 2234" > Press Enter
Output:
"I'm talking about #BUG2234 - Spelling Mistake"

I'm not sure how this would be done, or if it would need a feature request. I'm looking into webhooks (with a receiving application/bot that handle and post back), but from what I gather that would be a MSG > RESPONSE scenario, not inline as I am looking for. So basically I'm looking at some kind of pre-post processor/translator functionality on messages I guess.

Any guidance or thoughts appreciated.