Re: CASE control block broken by a single line comment

On 2024-04-13 00:20 +0200, Tom Lane wrote:
> Erik Wienhold <ewie(at)ewie(dot)name> writes:
> > I'm surprised that the lexer handles compound tokens. I'd expect to
> > find that in the parser, especially because of using the context-aware
> > plpgsql_ns_lookup to determine if we have a T_DATUM or T_{WORD,CWORD}.
>
> I'm not here to defend plpgsql's factorization ;-). However, it
> doesn't really have a parser of its own, at least not for expressions,
> so I'm not sure how your suggestion could be made to work.

Not a suggestion. Just a question about the general design, unrelated
to this fix, in case you know the answer off the cuff. I see that
863a62064c already had the lexer handle those compound tokens, but
unfortunately without an explanation on why. Never mind if that's too
much to ask about a design descision made over 25 years ago.

--
Erik