Re: make check calls zgrep from zutils

[Antonio Diaz Diaz]

Paul Eggert wrote:
> For the PATH problem, one possibility is that your shell is
> buggy, and isn't respecting PATH properly.  You might be
> able to debug this with sh -x.

My shell is bash, and it seems to respect PATH.

I have received a confirmation from Matias Fonzo that the check fails 
for him too.

I have also verified that the hash in bash can falsify the result by 
executing the remembered executable instead of the first one in the 
PATH. Maybe you need to run 'hash -r' before running 'make check'.

I think the problem is in the way gzip scripts try to locate 
executables. For example, from zcmp:

---------------------------
bindir='/usr/local/bin'
case $1 in
--__bindir) bindir=${2?}; shift; shift;;
esac
PATH=$bindir:$PATH
[...]
exec zdiff --__cmp "$@"
---------------------------

If invoked without the '--__bindir' option the code above will execute 
'/usr/local/bin/zdiff', regardless of where the invoked zcmp is located.

For example, with zutils installed in '/usr/local/bin/' switch to the 
gzip directory and try:

  $ ./zcmp gzip.doc gzip.doc.gz
  zdiff: unrecognized option '--__cmp'
  Try 'zdiff --help' for more information.
  $ ./zcmp --__bindir . gzip.doc gzip.doc.gz
  $


I think a better way to locate executables would be the one used by GNU 
ed in the 'red' script:

bindir=`echo "$0" | sed -e 's,[^/]*$,,'`
exec "${bindir}"ed --restricted "$@"

The code above always executes the 'ed' located in the same directory 
where the invoked 'red' is.


Best regards,
Antonio.