Re: bootstrapping SED-4.5, circular dependency?

[Ludovic Courtès]

Hello,

Assaf Gordon <address@hidden> skribis:

> Digging a bit further, I see this specific sed program originates
> from autoconf, from the M4 code used to implement basename and dirname,
> e.g. here:
> https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/m4sugar/m4sh.m4#n922
> https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/m4sugar/m4sh.m4#n970

IIUC, ‘configure’ scripts first try to determine whether they have a
working ‘basename’ and ‘dirname’ with:

--8<---------------cut here---------------start------------->8---
if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
  as_basename=basename
else
  as_basename=false
fi

if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
  as_dirname=dirname
else
  as_dirname=false
fi
--8<---------------cut here---------------end--------------->8---

Jan, could it be that the ‘basename’ and ‘dirname’ implementations in
Gash fail this test?  It might be that sed is not needed if you get
these right.

Thanks,
Ludo’.