On Fri, Feb 14, 2025 at 04:40:32PM +0000, [email protected] wrote: > Package: dash > Version: 0.5.12-12 > Severity: important > > Dear Maintainer, > > this is basically a copy of https://bugs.debian.org/443685 but for dash > instead of bash. > > The discussion at https://austingroupbugs.net/view.php?id=1234 is > helpful. > > This behavior of bash is the correct posix behavior: > ``` > $ bash -o posix -c 'a=\\; echo $a\/*' > /bin /boot /dev /etc /home /initrd.img /initrd.img.old /lib /lib64 > /lost+found /media /mnt /opt /proc /root /run /sbin /srv /sys /tmp /usr /var > /vmlinuz /vmlinuz.old > ``` > > dash instead behaves this way: > ``` > $ dash -c 'a=\\; echo $a\/*' > \/* > ```
This is not a bug. The backslash in $a joins up with the backslash before the slash, thus forming a double backslash which is taken as a a literal backslash. This does not contradcit any existing POSIX standard. In fact every shell other than bash does the same thing. Cheers, -- Email: Herbert Xu <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
