[v4r3] WebHandler does not accept numeric character in the handler name

[hmiyake]

With WebApp v4r3p11, we realized our handler does not work if its handler name contains numerical character (say B2XXX), while working with v4r2p12.
We think it comes from WebAppDIRAC/Core/HandlerMgr.py:

handlerRoute = hn[len(re.sub(r".[A-z]+$", "", hn)) :].replace(".", "/").replace("Handler", "")

We confirmed correct handlerRoute is given if "0-9" is added to the regular expression above.
May I open PR for that?

On the other hand, it's not trivial for me if WebApp v5 is affected since that code is much refactored in v5 and I could not find corresponding regular expression. I guess it is safe in v5...is it true?

[fstagni]

Yes, do open a PR for v4r3. I let you discover about v5...

[hmiyake]

Okay, probably we are only community using numerical character...