Hello all,

the manual page of GNU gzip says:

------------------------------

DIAGNOSTICS

Exit status is normally 0; if an error occurs, exit status is 1. If a warning occurs, exit status is 2.

------------------------------

This is not the case sind version >1.5 for the situation when the source file already ends with .gz

Test:

$ gzip 2018.gz

gzip: 2018.gz already has .gz suffix -- unchanged

$ echo $?

0

Following the patch for it:

diff --git a/gzip.c b/gzip.c

index e6a7761..bf3eb0a 100644

--- a/gzip.c

+++ b/gzip.c

@@ -1417,8 +1417,8 @@ local int make_ofname()

/* Avoid annoying messages with -r (see treat_dir()) */

if (verbose || (!recursive && !quiet)) {

/* Don't use WARN, as it affects exit status. */

- fprintf (stderr, "%s: %s already has %s suffix -- unchanged\n",

- program_name, ifname, suff);

+ WARN ((stderr, "%s: %s already has %s suffix -- unchanged\n",

+ program_name, ifname, suff));

}

return WARNING;

} else {

Test:

$ gzip 2018.gz

gzip: 2018.gz already has .gz suffix -- unchanged

$ echo $?

2

Best regards,

Manfred