Re: remove quoting hacks and simplify bootscanner.l

John Naylor <jcnaylor(at)gmail(dot)com> writes:
> For the bootstrap data conversion, it was desirable for postgres.bki
> to remain unchanged, so some ugly quoting hacks were added to
> genbki.pl to match the quoting conventions in the DATA() lines. At
> this point, it's possible (and worthwhile I think) to remove those,
> and along the way simplify the tokenizing rules in bootscanner.l. This
> will result in some largish changes to postgres.bki, but they're easy
> to reason about and have no functional consequence. Make check passes.

Forgot to follow up to this last night, but I pushed this with a couple of
changes:

* I didn't see a reason to remove '-' from the set of "id" characters.
That'd force quoting of data fields that are just "-", which there are
a lot of, so it would bulk up the .bki file for no gain.

* I didn't like assuming that Perl's \w exactly matches the set of
characters in the "id" production, so I changed that to use a
regex character class matching bootscanner.l's.

Also I did a bit of additional work to make single and double quotes
less magic. It was kind of tempting to rethink how bootscanner.l
parses double-quoted fields, but in the end I just left that as-is
and made the Perl code cope with it. I think as long as people can
write quotes in the .dat files without thinking too hard, nobody
will care how weird it looks in the .bki file.

regards, tom lane