grep potential bug in compression lib

[Cyril Chaboisseau]

hi,

there might be a small bug in the zgrep (or grep -z) command :

let's say I have a (or more ) file(s) and I want to number each line so
I use the -n switch and a blank pattern in order to match all lines :
(don't ask me why I don't use the 'nl' command)

$ zgrep -n "" file.gz

[...nothing happen]

and if I use the -z switch instead of the zgrep command

$ grep -zn "" file.gz
1:‹
”>2:file3:KËÏçJJ,â4:‚ƒ¬˜5:6:


but if I use another pattern (like '.*') it works a little bit better :


$ zgrep -n '.*' file.gz
1:foo
2:bar


(and the exact same result as before is given with grep -z)


I know that I use the command in a strange way but still, if it works
with the file in an uncompressed form, maybe there is a bug in the way
both zgrep or the -z switch are called


thank you

-- 
        Cyril Chaboisseau