徐迪I did like this: $ git add --foo $ echo $? what I got is 129, should this code being used as program terminated due to a signal? Cause it's 128+1. According to this[1].
[1] http://tldp.org/LDP/abs/html/exitcodes.html
threads / discuss / 29302
Why usage function exit with code 129?
Subject: Why usage function exit with code 129?
徐迪
Nguyen Thai Ngoc DuyRe: Why usage function exit with code 129?
2012/1/6 徐迪 <xudifsd@gmail.com>:
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> I did like this: > $ git add --foo > $ echo $? > what I got is 129, should this code being used as program terminated > due to a signal? Cause it's 128+1. According to this[1].
usage() (in your case) always returns 129, die() 128. See 5d1a5c0 ([PATCH] Better error reporting for "git status")
> [1] http://tldp.org/LDP/abs/html/exitcodes.html
No it does not mean terminated by signals.
-- Duy
徐迪Re: Why usage function exit with code 129?
>> [1] http://tldp.org/LDP/abs/html/exitcodes.html > > No it does not mean terminated by signals. > --
In that case, why not just use another code instead of the code that leads misunderstanding? I mean, as far as I know, exit code between 129 and 255 are used to indicate the program terminated by signal. So that usage function can only exit with code between 1 and 127. Am I wrong?
Nguyen Thai Ngoc DuyRe: Why usage function exit with code 129?
2012/1/6 徐迪 <xudifsd@gmail.com>:
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>>> [1] http://tldp.org/LDP/abs/html/exitcodes.html >> >> No it does not mean terminated by signals. >> -- > In that case, why not just use another code instead of the code that > leads misunderstanding? I mean, as far as I know, exit code between > 129 and 255 are used to indicate the program terminated by signal. So > that usage function can only exit with code between 1 and 127. Am I > wrong?
Because that code has been there too long (since 2005) any probably all git commands, including plumbing ones, rely on it. Changing it now may break existing scripts.
-- Duy
徐迪Re: Why usage function exit with code 129?
在 2012年1月6日 下午4:11，Nguyen Thai Ngoc Duy <pclouds@gmail.com> 写道：
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> 2012/1/6 徐迪 <xudifsd@gmail.com>: >>>> [1] http://tldp.org/LDP/abs/html/exitcodes.html >>> >>> No it does not mean terminated by signals. >>> -- >> In that case, why not just use another code instead of the code that >> leads misunderstanding? I mean, as far as I know, exit code between >> 129 and 255 are used to indicate the program terminated by signal. So >> that usage function can only exit with code between 1 and 127. Am I >> wrong? > > Because that code has been there too long (since 2005) any probably > all git commands, including plumbing ones, rely on it. Changing it now > may break existing scripts. > -- > Duy
Ok, that sounds logical.