On Fri, May 5, 2017 at 10:13 AM, K K Subbu <kksubbu.ml@gmail.com> wrote:

On Friday 05 May 2017 03:01 AM, Andrei Chis wrote:

Any thoughts or places where I can look? This problem is still in the
latest vm.

Cheers,
Andrei

On Thu, Mar 30, 2017 at 9:37 AM, Andrei Chis <chisvasileandrei@gmail.com
<mailto:chisvasileandrei@gmail.com>> wrote:

�� Hi,

�� In an ubuntu installation with the latest vm and Pharo 6 image when
�� executing `./pharo --help` I get an error code of 1.
...
�� On mac the error code is 0. Also when executing './pharo' or
�� './pharo Pharo.image --help' or './pharo --version' the error code
�� is 0 on both mac and linux.

That is strange. The source code returns 1 for both unix and Mac:

-----platforms/Mac OS/vm/sqMacUnixCommandLineInterface.c ----
�� if�� (!strcmp(argv[0], "-help"))�� {
�� usage();
�� return 1; }
-----platform/unix/vm/sqUnixMain.c
if�� (!strcmp(argv[0], VMOPTION("help")))�� { usage();�� return 1; }
-------

BTW, the option is "-help" with a single dash. Two dashes will print the same because the option is not recognized. You may as well type "--hellllp" ;-).

Thanks for the info!

It's actually a bit stranger. The option should be specified using '--'

./pharo -help

unknown option: -help

Common <option>s:

�� --help �� print this help message, then exit

Then `./pharo -help` returns an exit code of 1 on mac/linux while `./pharo --help` returns a exit code of 0 on mac and 1 on linux.

I think this behaviour comes from [1] and [2]:

----platforms/unix/vm/sqUnixMain.c----

if (!strcmp(argv[0], VMOPTION("help"))) { usage(); return 1; }

----platforms/iOS/vm/OSX/sqSqueakOSXApplication.m----

if ([argData isEqualToString: VMOPTIONOBJ("help")]) {��

�� [self usage];��

�� exit(0);��

�� return 1; }

It's still not clear why running the vm to print the help of the version should exit with an error code.

Cheers,

Andrei

[1]��https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/b076561abada1884750d75a7b144f1450acb949e/platforms/iOS/vm/OSX/sqSqueakOSXApplication.m

[2]��https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/995e7aedc3b5aeb76904f92abbd8a7a1bcf8138f/platforms/unix/vm/sqUnixMain.c

��

Regards .. Subbu