#121 zgrep fails to run, looks like bash redirection issues.

[John Malmberg]

This is looking like a bash redirection issue. It may also be issues in gzip and diff.

The lack of /dev/fd or simulation there of may also be an issue.

bash-4.3$ zdiff gzip.doc.gz
diff: -: illegal seek.

Related, make check for gzip is failing. Errors differ when gzip is run in debug or other diagnostics are enabled.

  GEN      check-local
./zdiff: line 81: 4: bad file number
diff: -: illegal seek
./zdiff: line 160: test: : integer expression expected

diff: /dev/fd/5: no such file or directory
/usr/bin/zdiff: line 110: cannot duplicate fd 3 to fd 0: bad file number
/usr/bin/zdiff: line 110: cannot duplicate fd 4 to fd 1: bad file number