or
.I diff
is preserved.
-.P
-When both files must be uncompressed before comparison, the second is
-uncompressed to
-.IR "/tmp" "."
-In all other cases,
-.IR "zdiff" " and " "zcmp"
-use only a pipe.
.SH "SEE ALSO"
cmp(1), diff(1), zmore(1), zgrep(1), znew(1), zforce(1), gzip(1), gzexe(1)
.SH BUGS