On 05/16/2011 01:40 PM, Paul Eggert wrote: > lswords=`ls -1diL "$src" "$dst" 2>/dev/null` && > inum= && \ > for lsword in $lswords; do > case $lsword in > *[!0-9]*) ;; > *) if test -z "$inum"; then > inum=$lsword > elif test $inum -ne $lsword; then > inum= > break > fi ;; > esac > done && > test -n "$inum" > > This uses just one fork+exec too, but it doesn't use the > XSI notion of %% and ##. It can be fooled if "$src" > or "$dst" contains an integer surrounded by spaces, but > any such errors cause it to fail in a conservative way > (by doing needless remakes), and these errors should be > rare so that's not so bad. > > It assumes [!0-9] works, though; > is that a safe assumption these days?
Yes, autoconf has been using [!...] negated shell patterns for years now, with no problems on Solaris /bin/sh or any other shell. -- Eric Blake ebl...@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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