I haven't tried it yet, but I have some comments.
On Wed, Feb 6, 2013 at 4:11 PM, Jens Lehmann <jens.lehm...@web.de> wrote:
> 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 together with the work tree
> himself).
>
> Help those users by providing a 'deinit' command. This removes the whole
> submodule.<name> section from .git/config either for the given
> submodule(s) or for all those which have been initialized if '.' is
> given. Fail if the current work tree contains modifications unless
> forced. Complain when for a submodule given on the command line the url
> setting can't be found in .git/config, but nonetheless don't fail.
>
> 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.lehm...@web.de>
> ---
>
> Changes since v3:
> - Add deinit to the --force documentation of "git submodule"
> - Never remove submodules containing a .git dir, even when forced
> - Diagnostic output when "rm -rf" or "mkdir" fails
> - More test cases
>
>
> Documentation/git-rm.txt | 4 ++
> Documentation/git-submodule.txt | 18 +++++++-
> git-submodule.sh | 78 ++++++++++++++++++++++++++++++-
> t/t7400-submodule-basic.sh | 100
> ++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 198 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/git-rm.txt b/Documentation/git-rm.txt
> index 92bac27..1d876c2 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 the removal,
> +use linkgit:git-submodule[1] `deinit` instead.
> +
> EXAMPLES
> --------
> `git rm Documentation/\*.txt`::
> diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
> index a0c9df8..bc06159 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 [-f|--force] [--] <path>...
> 'git submodule' [--quiet] update [--init] [--remote] [-N|--no-fetch]
> [--rebase]
> [--reference <repository>] [--merge] [--recursive] [--]
> [<path>...]
> 'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit)
> <n>]
> @@ -134,6 +135,19 @@ init::
> the explicit 'init' step if you do not intend to customize
> any submodule locations.
>
> +deinit::
> + Unregister the given submodules, i.e. remove the whole
> + `submodule.$name` section from .git/config together with their work
> + tree. 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.
> ++
> +If `--force` is specified, the submodule's work tree will be removed even if
> +it contains local modifications.
> +
> update::
> Update the registered submodules, i.e. clone missing submodules and
> checkout the commit specified in the index of the containing
> repository.
> @@ -213,8 +227,10 @@ OPTIONS
>
> -f::
> --force::
> - This option is only valid for add and update commands.
> + This option is only valid for add, deinit and update commands.
> When running add, allow adding an otherwise ignored submodule path.
> + When running deinit the submodule work trees will be removed even if
> + they contain local changes.
> When running update, throw away local changes in submodules when
> switching to a different commit; and always run a checkout operation
> in the submodule, even if the commit listed in the index of the
> diff --git a/git-submodule.sh b/git-submodule.sh
> index 004c034..f1b552f 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 [-f|--force] [--] <path>...
> or: $dashless [--quiet] update [--init] [--remote] [-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>
> @@ -547,6 +548,81 @@ cmd_init()
> }
>
> #
> +# Unregister submodules from .git/config and remove their work tree
> +#
> +# $@ = requested paths (use '.' to deinit all submodules)
> +#
> +cmd_deinit()
> +{
> + # parse $args after "submodule ... init".
> + while test $# -ne 0
> + do
> + case "$1" in
> + -f|--force)
> + force=$1
> + ;;
> + -q|--quiet)
> + GIT_QUIET=1
> + ;;
> + --)
> + shift
> + break
> + ;;
> + -*)
> + usage
> + ;;
> + *)
> + break
> + ;;
> + esac
> + shift
> + done
> +
> + if test $# = 0
> + then
> + die "$(eval_gettext "Use '.' if you really want to
> deinitialize all submodules")"
> + fi
> +
> + 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 "$url"
> + then
> + say "$(eval_gettext "No url found for submodule path
> '\$sm_path' in .git/config")"
Is it safe to shelter the user a little bit more from the git
internals here and say instead:
Submodule '\$sm_path' is not initialized.
Also, I think this code will show this message for each submodule on
'git submodule deinit .' But I think I would prefer to suppress it in
that case. If I have not explicitly stated which submodules to
deinit, then I do not think git should complain that some of them are
not initialized.
> + continue
> + fi
> +
> + # Remove the submodule work tree (unless the user already did
> it)
> + if test -d "$sm_path"
> + then
> + # Protect submodules containing a .git directory
> + if test -d "$sm_path/.git"
> + then
> + echo >&2 "$(eval_gettext "Submodule work tree
> $sm_path contains a .git directory")"
> + die "$(eval_gettext "(use 'rm -rf' if you
> really want to remove it including all of its history)")"
I expect this is the right thing to do for now. But I wonder if we
can also move $sm_path/.git to $GIT_DIR/modules/$sm_path in this case
(though I think I am not spelling this path correctly). Would that be
ok? What extra work is needed to relocate the .git dir like this?
> + fi
> +
> + if test -z "$force"
> + then
> + git rm -n "$sm_path" ||
> + die "$(eval_gettext "Submodule work tree
> $sm_path contains local modifications, use '-f' to discard them")"
Nit, grammar: use a semicolon instead of a comma.
> + fi
> + rm -rf "$sm_path" || say "$(eval_gettext "Could not
> remove submodule work tree '\$sm_path'")"
> + fi
> +
> + mkdir "$sm_path" || say "$(eval_gettext "Could not create
> empty submodule directory '\$sm_path'")"
> +
> + # Remove the whole section so we have a clean state when the
> + # user later decides to init this submodule again
> + git config --remove-section submodule."$name" &&
> + say "$(eval_gettext "Submodule '\$name' (\$url) unregistered
> for path '\$sm_path'")"
> + done
> +}
> +
> +#
> # Update each submodule path to correct revision, using clone and checkout
> as needed
> #
> # $@ = requested paths (default to all)
> @@ -1157,7 +1233,7 @@ 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=$1
> ;;
> -q|--quiet)
> diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
> index 2683cba..f54a40d 100755
> --- a/t/t7400-submodule-basic.sh
> +++ b/t/t7400-submodule-basic.sh
> @@ -757,4 +757,104 @@ test_expect_success 'submodule add with an existing
> name fails unless forced' '
> )
> '
>
> +test_expect_success 'set up a second submodule' '
> + git submodule add ./init2 example2 &&
> + git commit -m "submodle example2 added"
Nit: submodule is misspelled
> +'
> +
> +test_expect_success 'submodule deinit should remove the whole submodule
> section from .git/config' '
> + git config submodule.example.foo bar &&
> + git config submodule.example2.frotz nitfol &&
> + git submodule deinit init &&
> + test -z "$(git config submodule.example.url)" &&
> + test -z "$(git config submodule.example.foo)" &&
> + test -n "$(git config submodule.example2.url)" &&
> + test -n "$(git config submodule.example2.frotz)" &&
> + test -f example2/.git &&
> + rmdir init
> +'
> +
> +test_expect_success 'submodule deinit . deinits all initialized submodules' '
> + git submodule update --init &&
> + git config submodule.example.foo bar &&
> + git config submodule.example2.frotz nitfol &&
> + test_must_fail git submodule deinit &&
> + git submodule deinit . &&
> + test -z "$(git config submodule.example.url)" &&
> + test -z "$(git config submodule.example.foo)" &&
> + test -z "$(git config submodule.example2.url)" &&
> + test -z "$(git config submodule.example2.frotz)" &&
> + rmdir init example2
> +'
> +
> +test_expect_success 'submodule deinit deinits a submodule when its work tree
> is missing or empty' '
> + git submodule update --init &&
> + rm -rf init example2/* example2/.git &&
> + git submodule deinit init example2 &&
> + test -z "$(git config submodule.example.url)" &&
> + test -z "$(git config submodule.example2.url)" &&
> + rmdir init
> +'
> +
> +test_expect_success 'submodule deinit fails when the submodule contains
> modifications unless forced' '
> + git submodule update --init &&
> + echo X >>init/s &&
> + test_must_fail git submodule deinit init &&
> + test -n "$(git config submodule.example.url)" &&
> + test -f example2/.git &&
> + git submodule deinit -f init &&
> + test -z "$(git config submodule.example.url)" &&
> + rmdir init
> +'
> +
> +test_expect_success 'submodule deinit fails when the submodule contains
> untracked files unless forced' '
> + git submodule update --init &&
> + echo X >>init/untracked &&
> + test_must_fail git submodule deinit init &&
> + test -n "$(git config submodule.example.url)" &&
> + test -f example2/.git &&
> + git submodule deinit -f init &&
> + test -z "$(git config submodule.example.url)" &&
> + rmdir init
> +'
> +
> +test_expect_success 'submodule deinit fails when the submodule HEAD does not
> match unless forced' '
> + git submodule update --init &&
> + (
> + cd init &&
> + git checkout HEAD^
> + ) &&
> + test_must_fail git submodule deinit init &&
> + test -n "$(git config submodule.example.url)" &&
> + test -f example2/.git &&
> + git submodule deinit -f init &&
> + test -z "$(git config submodule.example.url)" &&
> + rmdir init
> +'
> +
> +test_expect_success 'submodule deinit complains but does not fail when used
> on an uninitialized submodule' '
> + git submodule update --init &&
> + git submodule deinit init >actual &&
> + test_i18ngrep "Submodule .example. (.*) unregistered for path .init"
> actual
> + git submodule deinit init >actual &&
> + test_i18ngrep "No url found for submodule path .init. in .git/config"
> actual &&
> + git submodule deinit . >actual &&
> + test_i18ngrep "Submodule .example2. (.*) unregistered for path
> .example2" actual
> + rmdir init example2
> +'
> +
> +test_expect_success 'submodule deinit fails when submodule has a .git
> directory even when forced' '
> + git submodule update --init &&
> + (
> + cd init &&
> + rm .git &&
> + cp -R ../.git/modules/example .git &&
> + GIT_WORK_TREE=. git config --unset core.worktree
> + ) &&
> + test_must_fail git submodule deinit init &&
> + test_must_fail git submodule deinit -f init &&
> + test -d init/.git &&
> + test -n "$(git config submodule.example.url)"
> +'
> +
> test_done
> --
> 1.8.1.2.546.gea155c0
>
>
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