Re: @} in @copying error in TeX

[Gavin Smith]

On Mon, Jul 25, 2022 at 01:05:25PM +0100, Gavin Smith wrote:
> On Mon, Jul 25, 2022 at 11:12:16AM +0200, Patrice Dumas wrote:
> I couldn't fix this easily so I have reverted the change until I have
> time to work out what is going on.

I've had another go.  @{ and @} should work inside @copying, and
@caption is not completely broken, unlike in my previous attempt.

I'm aware that @{ and @} are broken inside @caption, although
they were before, I expect.  The difference is that the argument to
@caption is delimited by braces.

I am not sure if there is a need for treating the argument to @caption
similarly to a @macro definition, scanning it with \scantokens, so it's
possible a simpler definition might suffice.