On 2010-05-06 13:50:27 +0100, Pádraig Brady wrote: > The above busybox behavior implies that > if you write a robust script like this for coreutils, > that it is not portable to busybox: > > base=$(basename -- "$path")
If one follows POSIX, the correct way to do it is: base=$(basename "$path") and this is robust because the first argument is necessarily the path (it cannot be an option, even "--"). > That also implies that we can't change the behavior. According to grep 'basename --' /usr/bin/* grep 'basename \$' /usr/bin/* on my Debian machine, almost all scripts use basename without "--". The only exceptions are autoconf (but I'm not sure this counts, as there's a test for "basename --" first, and I don't know what it really expects) and savelog (from the debianutils package, thus specific to Debian, but savelog also uses `basename $0`, so that it is already inconsistent). Therefore I assume that changing coreutils would be easier. > Because there is an optional suffix parameter, one can't > know which behavior is required for the above example. > I suppose one could choose based on POSIXLY_CORRECT. I think that it should really behave correctly if POSIXLY_CORRECT is set, but also if it isn't set, given what appears to be the current practice. > Note solaris behaves like busybox and openbsd behaves like coreutils. Perhaps they're copying coreutils without looking at what POSIX says. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
