On 2018-08-05, at 19:30:25, Robin Vowels wrote:
>
> Of course. In the context, EX can modify everything.
>
> And anyway, why would you want to EX an EX?
>
Wrong question to ask a programmer. My maxim:
• Unix was not designed to stop you from doing stupid things,
because that would also stop you from doing clever things.
• Doug Gwyn, in Introducing Regular Expressions (2012) by
Michael Fitzgerald
Don't prohibit something just because you can't envision a potential
rationale ("Why would you want ...")
However, if there's a good technical reason to prohibit it in the hardware,
such as the possibility of an uninterruptible loop in microcode, generality
bows to practicality.
-- gil
