Am Fri, Jan 20, 2023 at 09:32:38AM -0700 schrieb Bob Beck: > Various spec docs seem all over the place on this, so I am also > paging Dr. Posix in this email... Hi Philip! :) Is isdigit() > safe from being screwed up by locale or not?
I think this POSIX.1-2017 (i.e. Open Group Issue 7), locales are required to be based on the Portale Character Set and the digit class is required to map the ASCII code points only. In that sense, isdigit() is locale invariant. Joerg
