Suspecting bug in /bin/sh's IFS
olli at lurza.secnetix.de
Tue Mar 24 03:55:58 PDT 2009
Stefan Farfeleder wrote:
> Jilles Tjoelker wrote:
> > The code is wrong, but your patched code is also wrong. The read builtin
> > should use the same logic as normal field splitting, with additional
> > rules if there are more fields in the input than variables.
> > I have noticed that NetBSD has already fixed this. I have ported these
> > fixes over: http://www.stack.nl/~jilles/unix/sh-read-split.patch
> > The patch is against RELENG_7, I hope it applies to -CURRENT as well.
> > The NetBSD commit message also refers to
> > http://www.research.att.com/~gsf/public/ifs.sh
> > Just like their /bin/sh, our /bin/sh with the patch now passes the
> > 'read' tests from there (there are still many other failures though).
> > By the way, to avoid all processing by read, one must IFS= read -r VAR.
> > Without the IFS specification, leading and trailing whitespace will
> > still be stripped.
> Thank you, I have committed this patch.
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