bug#29337: Bash reads system-wide bashrc unconditionally.

[Roel Janssen]

Ludovic Courtès writes:

> Heya,
>
> Roel Janssen <address@hidden> skribis:
>
>> Roel Janssen <address@hidden> skribis:
>>
>>>> On CentOS 7, the following happens (yes, I added the echo-statement to
>>>> /etc/bashrc on CentOS as well):
>>>> $ env - bash --init-file <(echo "echo \"Goodbye, world\"") -i
>>>> Goodbye, world
>>>>
>>>> On GuixSD:
>>>> $ env - bash --init-file <(echo "echo \"Goodbye, world\"") -i
>>>> Hello, world
>>>> Goodbye, world
>
>> Well it seems that it isn't ignored when it ought to be ignored -> when
>> specifying --init-file.  This is a difference between how Bash works on
>> CentOS 7, and how Bash works on Guix(SD).  I can't find a
>> user-configurable option to make it work the same as on CentOS 7.
>
> Now, we’re compiling Bash with "-DSYS_BASHRC='\"/etc/bashrc\"'".  I
> wonder if removing that flag solves the --init-file case.

It does.  So, I have a custom bash package for my specific use-case.
I'm not sure how it affects other functionality, but I would like it if
we could make this change upstream at some point.

Kind regards,
Roel Janssen