[adding autoconf] On 02/28/2012 09:42 AM, Stefano Lattarini wrote: >> Ah, likely the famous ksh bug with "$@" and empty arguments: >> >> <http://lists.gnu.org/archive/html/automake-patches/2009-12/msg00037.html> > See automake bug#10898. > > At least the AT&T and OpenSolaris versions of the Korn shell have a > strange bug regarding the expression ${1+"$@"}: when exactly *one* > empty argument is passed to a shell function, inside that function > the expression ${1+"$@"} will expand to *nothing*, rather than to > to the single empty string, as one would expect. This was causing > a spurious failure in our testsuite when a shell suffering of this > bug was used to run the test cases. Yuck - this sounds like it should be documented in the autoconf manual. Is it only shell functions that are affected, but global use of ${1+"$@"} is still safe? -- Eric Blake eblake@xxxxxxxxxx +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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