On 3/9/21 6:29 PM, Nick Bowler wrote:
This syntax is not portable in practice, as discussed in the Autoconf manual[1].
This shouldn't be a issue in configure scripts, since they should arrange to use a good shell. If that isn't happening for some reason I'd rather fix the underlying problem than go through configure.ac and .m4 files etc. looking for compatibility problems with old or nonstandard shells.
