On Wed, Apr 23, 2025 at 09:31:42AM +0200, Alejandro Colomar wrote: > > <http://austingroupbugs.net/view.php?id=251> Ugh. Reading through that bug, despite the fact that the original proposal was *significantly* bared down, has greatly reduced my respect for the Austin Group. One of the people in that bug argued unironically that using pipes should be deprecated. i.e., that somehow "find . ... -print0 | xargs -0 ..." was a security problem. <<Sigh>> Other people pointed out that creating proscriptions that were not implemented by many/most historical implementations would fragment the standard and decrease the respect people would have towards the POSIX specification. That was the "toilet paper" comment which you referenced. Well, they got that right. > I think a mode for disallowing _any control characters_ (aka > [:cntrl:], aka 0-31) would be a good choice. As the Austin Group Bug pointed out, the problem is that the control characters can be printable characters, depending on the code page that you might be using. The example that was given was cp437. The problem is that historically speaking, the kernel does *not* know about what locale that is in use. We made an exception to handle case folding, where we added Unicode tables into the kernel. Some would say that was a major mistake, and it's certainly been a headache. - Ted
