Re: Git issues with submodules

[Jens Lehmann <Jens.Lehmann@web.de>]

Am 24.11.2013 01:52, schrieb Heiko Voigt:
> Hi,
> 
> On Sat, Nov 23, 2013 at 09:10:44PM +0100, Jens Lehmann wrote:
>> Am 22.11.2013 23:09, schrieb Jonathan Nieder:
>>> Heiko Voigt wrote:
>>>
>>>> After that we can discuss whether add should add submodules that are
>>>> tracked but not shown. How about commit -a ? Should it also ignore the
>>>> change? I am undecided here. There does not seem to be any good
>>>> decision. From the users point of view we should probably not add it
>>>> since its not visible in status. What do others think?
>>>
>>> I agree --- it should not add.
>>
>> I concur: adding a change that is hidden from the user during
>> the process is not a good idea.
> 
> Here is a patch achieving that. Still missing a test which I will add.

Looking good to me. Please add tests for "diff.ignoreSubmodules"
and "submodule.<name>.ignore", the latter both in .gitmodules and
.git/config. While doing some testing for this thread I found an
inconsistency in git show which currently honors the submodule
specific option only from .git/config and ignores it in the
.gitmodules file (depending on the outcome of the discussion on
what '--ignore-submodules=all' should ignore we might have to fix
that one afterwards).

I'd suggest to also add the --ignore-submodules option in another
patch on top, because the user should be able to override the
configuration either way. And what about having the '-f' option
imply '--ignore-submodules=none'?

> Cheers Heiko
> 
> ---8<----
> Subject: [PATCH] fix 'git add' to skip submodules configured as ignored
> 
> If submodules are configured as ignore=all they are not shown by status.
> Lets also ignore them when adding files to the index. This avoids that
> users accidentially add ignored submodules with: git add .
> 
> We achieve this by reading the submodule config and thus correctly
> initializing the infrastructure to take the ignore decision.
> 
> Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
> ---
>  builtin/add.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/builtin/add.c b/builtin/add.c
> index 226f758..2d0d2ef 100644
> --- a/builtin/add.c
> +++ b/builtin/add.c
> @@ -15,6 +15,7 @@
>  #include "diffcore.h"
>  #include "revision.h"
>  #include "bulk-checkin.h"
> +#include "submodule.h"
>  
>  static const char * const builtin_add_usage[] = {
>  	N_("git add [options] [--] <pathspec>..."),
> @@ -378,6 +379,10 @@ static int add_config(const char *var, const char *value, void *cb)
>  		ignore_add_errors = git_config_bool(var, value);
>  		return 0;
>  	}
> +
> +	if (!prefixcmp(var, "submodule."))
> +		return parse_submodule_config_option(var, value);
> +
>  	return git_default_config(var, value, cb);
>  }
>  
> @@ -415,6 +420,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
>  	int implicit_dot = 0;
>  	struct update_callback_data update_data;
>  
> +	gitmodules_config();
>  	git_config(add_config, NULL);
>  
>  	argc = parse_options(argc, argv, prefix, builtin_add_options,
>