Thanks for the clarification. Note that _ (underscore) works as expected since it is a valid character in identifiers. - (hyphen/dash) would need to be special-cased.
Oops, I'm sorry. I typed up my last reply on the bus away from my desk, and made the typo of replacing the hyphen with the underscore. So to clarify, I meant to say <PROJECTNAME>-<ISSUENUMBER>, ie GUI-100
case=90329 is partially implemented in build 2073 as an optional enhancement. In 2073, the registry value named HashtagsAllowHyphens defaults to 00. Change it to 01 for VA to display hashtags with dash/hyphen in the hashtags toolwindow.