Re: [PATCH] Revert 'Fix logic error in _AC_PROG_LEX_YYTEXT_DECL (#109320)'

[Ross Burton]

On Thu, 16 Jul 2020 at 18:16, Paul Eggert <eggert@cs.ucla.edu> wrote:
> The patch I installed was simpler and more conservative than what you 
> proposed.
> It gives up on 'flex' and sets LEX back to ":" if any of the
> _AC_PROG_LEX_YYTEXT_DECL tests fail.

Wouldn't that break cross-compilation where a host flex is present but
target libfl isn't?  That case worked previously and should work fine,
as libfl isn't actually that useful.

Ross