Re: FYI, 2.73 slower than 2.72

On 2026-03-18 09:22, Zack Weinberg wrote:
> I don't have a good explanation for this; it seems to me that even
> for the longest test programs we have, that construct should never
> take more than a few _micro_seconds.  Maybe bash implements it in
> an inefficient way?

Perhaps PATH is long and 'cat' is late in the PATH?

If Autoconf 2.73 prepends stuff to PATH that 2.72 didn't, that might at 
least partly explain the small increase that you observe. It likely 
wouldn't explain the larger increase that Ross observes, though.