Jens Lehmann <Jens.Lehmann@xxxxxx> writes:
> With "git submodule init" the user is able to tell git he cares about one
> or more submodules and wants to have it populated on the next call to "git
> submodule update". But currently there is no easy way he could tell git he
> does not care about a submodule anymore and wants to get rid of his local
> work tree (except he knows a lot about submodule internals and removes the
> "submodule.$name.url" setting from .git/config himself).
>
> Help those users by providing a 'deinit' command. This removes the url
> setting from .git/config either for the given submodule(s) or for all
> those which have been initialized if none were given. Complain only when
> for a submodule given on the command line the url setting can't be found
> in .git/config.
>
> Add tests and link the man pages of "git submodule deinit" and "git rm" to
> assist the user in deciding whether removing or unregistering the submodule
> is the right thing to do for him.
>
> Signed-off-by: Jens Lehmann <Jens.Lehmann@xxxxxx>
> ---
I fully agree with your analysis on the reason why the "url" element
is special and has to be copied to $GIT_DIR/config, but when you
deinit (or uninit) a submodule to say you are no longer interested
in it and do not want it populated in the context of the
superproject, I am not sure if removing only submodule.$name.url (so
that when you later decide to "init" it again, you will keep the
values for submodule.$name.update and other things from the previous
life) is the sane thing to do, or it is better to remove
submodule.$name.* altogether as if an earlier "init" has never
happened. Would it be worth analyzing the pros-and-cons here?
> Am 01.12.2012 16:56, schrieb Jens Lehmann:
>> Am 01.12.2012 00:52, schrieb Phil Hord:
>>> If I never 'submodule init' a submodule, it does not get visited by
>>> 'git submodule foreach', among others. I think some people use this
>>> behavior explicitly.
>>>
>>> On the other hand, I've also notice that a submodule which I have
>>> removed does not get de-inited later one. It causes my 'git submodule
>>> foreach' to emit errors. :-(
>>
>> I'm currently hacking on "git submodule deinit" which removes the 'url'
>> setting from git/config. This should do the trick for you, right?
>
> And here we go ...
>
>
> Documentation/git-rm.txt | 4 ++++
> Documentation/git-submodule.txt | 11 +++++++++
> git-submodule.sh | 50 ++++++++++++++++++++++++++++++++++++++++-
> t/t7400-submodule-basic.sh | 11 +++++++++
> 4 files changed, 75 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/git-rm.txt b/Documentation/git-rm.txt
> index 262436b..ec42bf5 100644
> --- a/Documentation/git-rm.txt
> +++ b/Documentation/git-rm.txt
> @@ -149,6 +149,10 @@ files that aren't ignored are present in the submodules work tree.
> Ignored files are deemed expendable and won't stop a submodule's work
> tree from being removed.
>
> +If you only want to remove the local checkout of a submodule from your
> +work tree without committing that use `git submodule deinit` instead
> +(see linkgit:git-submodule[1]).
> +
> EXAMPLES
> --------
> `git rm Documentation/\*.txt`::
> diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
> index b1de3ba..fba77f6 100644
> --- a/Documentation/git-submodule.txt
> +++ b/Documentation/git-submodule.txt
> @@ -13,6 +13,7 @@ SYNOPSIS
> [--reference <repository>] [--] <repository> [<path>]
> 'git submodule' [--quiet] status [--cached] [--recursive] [--] [<path>...]
> 'git submodule' [--quiet] init [--] [<path>...]
> +'git submodule' [--quiet] deinit [--] [<path>...]
> 'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase]
> [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
> 'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) <n>]
> @@ -134,6 +135,16 @@ init::
> the explicit 'init' step if you do not intend to customize
> any submodule locations.
>
> +deinit::
> + Unregister the submodules, i.e. remove the `submodule.$name.url`
> + setting from .git/config. Further calls to `git submodule update`,
> + `git submodule foreach` and `git submodule sync` will skip any
> + unregistered submodules until they are initialized again, so use
> + this command if you don't want to have a local checkout of the
> + submodule in your work tree anymore. If you really want to remove
> + a submodule from the repository and commit that use
> + linkgit:git-rm[1] instead.
> +
> update::
> Update the registered submodules, i.e. clone missing submodules and
> checkout the commit specified in the index of the containing repository.
> diff --git a/git-submodule.sh b/git-submodule.sh
> index 2365149..4059a2e 100755
> --- a/git-submodule.sh
> +++ b/git-submodule.sh
> @@ -8,6 +8,7 @@ dashless=$(basename "$0" | sed -e 's/-/ /')
> USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
> or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
> or: $dashless [--quiet] init [--] [<path>...]
> + or: $dashless [--quiet] deinit [--] [<path>...]
> or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
> or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
> or: $dashless [--quiet] foreach [--recursive] <command>
> @@ -516,6 +517,53 @@ cmd_init()
> }
>
> #
> +# Unregister submodules from .git/config
> +#
> +# $@ = requested paths (default to all)
> +#
> +cmd_deinit()
> +{
> + # parse $args after "submodule ... init".
> + while test $# -ne 0
> + do
> + case "$1" in
> + -q|--quiet)
> + GIT_QUIET=1
> + ;;
> + --)
> + shift
> + break
> + ;;
> + -*)
> + usage
> + ;;
> + *)
> + break
> + ;;
> + esac
> + shift
> + done
> +
> + module_list "$@" |
> + while read mode sha1 stage sm_path
> + do
> + die_if_unmatched "$mode"
> + name=$(module_name "$sm_path") || exit
> + url=$(git config submodule."$name".url)
> + if test -z "$url"
> + then
> + # Only mention uninitialized submodules when its
> + # path have been specified
> + test "$#" != "0" &&
> + say "$(eval_gettext "No url found for submodule path '\$sm_path' in .git/config")"
> + continue
> + fi
> + git config --unset submodule."$name".url &&
> + say "$(eval_gettext "Submodule '\$name' (\$url) unregistered")"
> + done
> +}
> +
> +#
> # Update each submodule path to correct revision, using clone and checkout as needed
> #
> # $@ = requested paths (default to all)
> @@ -1108,7 +1156,7 @@ cmd_sync()
> while test $# != 0 && test -z "$command"
> do
> case "$1" in
> - add | foreach | init | update | status | summary | sync)
> + add | foreach | init | deinit | update | status | summary | sync)
> command=$1
> ;;
> -q|--quiet)
> diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
> index de7d453..803bda7 100755
> --- a/t/t7400-submodule-basic.sh
> +++ b/t/t7400-submodule-basic.sh
> @@ -756,4 +756,15 @@ test_expect_success 'submodule add with an existing name fails unless forced' '
> )
> '
>
> +test_expect_success 'submodule deinit should unregister submodule url from .git/config' '
> + url=$(git config submodule.example.url) &&
> + git submodule deinit &&
> + test -z "$(git config submodule.example.url)"
> +'
> +
> +test_expect_success 'submodule deinit complains only when explicitly used on an uninitialized submodule' '
> + git submodule deinit &&
> + test_must_fail git submodule deinit example
> +'
> +
> test_done
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