Banned files match, example question

[Olivier Nicole]

Gregory,

> But I'm confused. Why does the first match use:
> $'i
> vs
> $'ix for the second?

amavis is written in Perl, this is Perl syntax: i stands for case
insensitive: the regexp would match .exe and .EXE and .eXe etc.

x means extended, you can have  spaces in the regexp and they will be
ignored, that adds readability to your regexp.

Bests,

Olivier