Nested formats

Nested formats

Are nested formats a good idea?  Probably not.  But the only rea-
son they don’t work is that the parser becomes confused and loses
track of where it is.

And it would be nice to have some consistency.  I can put sub defini-
tions inside a format:

format =
@
;sub foo {
    bar
}
.

and:

format =
@
{
    sub foo {
        bar
    }
}
.

so why not these?

format foo =
@
;format bar =
@
.
.

format foo =
@
{
    format bar =
@
.
}
.

In perl 5.17.2 and earlier, you can nest formats, but, due to the
parser being confused, the outer format must be terminated with }
instead of a dot.  That stopped working with commit 7c70caa5333.

format =
@<<<<<<<<<<<<<<<
"Just another"; format STDERR =
@<<<<<<<<<<<<<<<
"Perl hacker"
.
}
write; select STDERR;
write;