Regexp $-commands and ^-listen with ':'

[brazilofmux]

Original issue 660 created by brazilofmux on 2011-05-04T20:58:10.000Z:

TinyMUX 2.10

> &test.cmd me=$+test:@pemit me=Foo
> @set me/test.cmd=regexp
> @set me=COMMANDS

> +test
Foo
> &test.cmd me=$+test::@pemit me=Foo
Brazil @pemit me=Foo
> &test.cmd me=$+test::@pemit me=Foo
Huh?
> &test.cmd me=$+test\x3A:@pemit me=Foo
> +test:
Foo
> &test.cmd me=$+test(?>\x3A)?:@pemit me=Foo
> +test:
Foo
> +test
Foo

Basically, ':' cannot appear in the command except as \x3A because TinyMUX parses it as the end of the command pattern.

'\x3A' can be used instead of ':'. '(?>...)' can be used instead '(?:...)' in most cases, but it isn't the same.

On PennMUSH, ':' is used to escape the training ':'.