Currently, the maximum tag length is 25 characters. This gives tags such as "interprocess-communicatio" (also shortened to the tag ipc).
Should this be increased, or should the truncated tag be renamed?
No matter what the limit is, you can always find examples which exceeds it. Just ask me, I'm German, I concatenate the shit out of you!
Rename it, that's it! 25 chars sounds reasonable to me.