Comment 15 for bug 1935037

Provided that the questions of compatibility are answered positively, I don't have an objection to allowing utf-8 (aka. 0x7f -> 0xff). However, I don't like the idea of allowing allowing more characters in the 0x00 -> 0x7e range beyond the current [a-zA-Z0-9_] set.

I gave the example of PVXS to illustrate how I am able to exploit a restricted character set in a (fairly fast) parser. This is not something I imagined back when this restriction was added.