From @masak

To match whatever the prior successful regex matched, use​:

  / <prior> /

r30466​:
$ ./perl6 -e 'my $s = "hello"; say $s ~~ /ll/; say $s ~~ /ll/' # works
ll
ll
$ ./perl6 -e 'my $s = "hello"; say $s ~~ /ll/; say $s ~~ / <prior> /'
# not implemented
ll
Unable to find regex 'prior'
Null PMC access in invoke()
[...]

This feature request is perhaps more accurately classified as
pertaining to PGE. Please re-tag as needed.

From @pmichaud

On Sat, Aug 23, 2008 at 02​:27​:10AM -0700, Carl Mäsak wrote​:

To match whatever the prior successful regex matched, use​:

 / \<prior> /

r30466​:
$ ./perl6 -e 'my $s = "hello"; say $s ~~ /ll/; say $s ~~ /ll/' # works
ll
ll
$ ./perl6 -e 'my $s = "hello"; say $s ~~ /ll/; say $s ~~ / <prior> /'
# not implemented
ll
Unable to find regex 'prior'
Null PMC access in invoke()
[...]

This feature request is perhaps more accurately classified as
pertaining to PGE. Please re-tag as needed.

...correct -- C<< <prior> >> is not yet implemented. I'm not
certain if it belongs in PGE or in Rakudo... I'm guessing that
<prior> needs to refer to the "prior successful regex" in a
statement-level context, as opposed to a regex context. For
example, if we interpret S05 literally then in the regex

  / <foo> <prior> /

it's pretty clear that C<< <foo> >> is the prior successful regex
matched, and I think that's not what is intended by C<< <prior> >>.
(If it is what is intended, then C<< <prior> >> becomes much
simpler. :-)

Pm

The RT System itself - Status changed from 'new' to 'open'

From @pmichaud

I've changed this ticket to indicate that it's waiting on spec
clarification as to the exact meaning of <prior> in regexes.

Pm

From @coke

On Tue Jun 30 19​:55​:26 2009, pmichaud wrote​:

I've changed this ticket to indicate that it's waiting on spec
clarification as to the exact meaning of <prior> in regexes.

Pm

Since this ticket is about a clarification to the specification, it's been
migrated to the spec's issue queue​:

Raku/roast#8

--
Will "Coke" Coleda

@coke - Status changed from 'open' to 'rejected'

From @coke

On Fri Oct 21 05​:54​:53 2011, coke wrote​:

On Tue Jun 30 19​:55​:26 2009, pmichaud wrote​:

I've changed this ticket to indicate that it's waiting on spec
clarification as to the exact meaning of <prior> in regexes.

Pm

Since this ticket is about a clarification to the specification, it's
been
migrated to the spec's issue queue​:

Raku/roast#8

Whoops, I meant​:

Raku/old-design-docs#5

--
Will "Coke" Coleda