Hi Jean-loup.
zdiff was not working on my system: When comparing 2 uncompressed
files, it worked. When comparing 1 compressed with an uncompressed
file, it worked. But when comparing 2 compressed files I got no
output.
It seems the missing part was >&3.
Here is a patch.
/Ole
--- /home/tange/bin/zdiff 2007-07-31 10:25:13.000000000 +0200
+++ /bin/zdiff 2007-06-22 02:17:05.000000000 +0200
@@ -104,7 +104,7 @@
exec 4>&1
(gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- |
( (gzip -cdfq -- "$2" 4>&-; echo $? >&4)
3>&- 5<&- </dev/null |
- eval "$cmp" /dev/fd/5 - >&3) 5<&0
+ eval "$cmp" /dev/fd/5 -) 5<&0
)
case $gzip_status in
*[1-9]*) gzip_status=1;;
