>>>>> "EB" == Eric Blake <ebl...@redhat.com> writes:
EB> On 12/21/2015 05:00 PM, 積丹尼 Dan Jacobson wrote: >> OK. Also make sure (info "(coreutils) test invocation") makes it clear that >> one cannot use >> test -f $1 -a $1 ! -ot $2 #and must use >> test -f $1 -a ! $1 -ot $2 #. EB> Use of -a in test is inherently non-portable. POSIX even says so - EB> there are some expressions which are completely ambiguous when you EB> attempt to use -a or -o. Mmmm! The documentation should mention that! EB> Also, your lack of quoting is a classic pitfall for how to incorrectly EB> use test. EB> Better than what you typed would be using: EB> test -f "$1" && test ! "$1" -ot "$2" Mmmm, quote tips only mention in the case of (info "(coreutils) String tests"). Maybe need to mention in more places! Also no "X$1" = X special tip seen...
