"Nelson H. F. Beebe" <[EMAIL PROTECTED]> writes: > The problem is that the newer $(...) syntax introduced by POSIX is not > understood by older shells.
Thanks. Unfortunately zgrep is not easy to port to the `...` syntax used by older shells, since it uses nested $(... $(...) ...), and nesting `...` is a huge portability can of worms. I could rewrite it to use temp files instead, but I'd rather not, as temp files have their own problems. So I suspect we'll just have to live with gzip not being portable to older systems that lack pre-POSIX shells. POSIX standardized $(...) in 1992, so I hope that assuming $(...) is not a problem for hosts of practical concern nowadays. It could well be that the 'configure' is not finding a POSIX-compatible shell on SGI IRIX MIPS, even though such a shell does exist. If so, we can focus on getting that to work; that should fix the problem with zgrep.
