From b33413b4bd5c1407f0b4b6d62a888adaad5cba5e Mon Sep 17 00:00:00 2001 From: "W. Trevor King" Date: Mon, 22 Oct 2012 10:48:24 -0400 Subject: [PATCH] git-submodule add: Add --follow-branch option MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This option allows you to record a submodule..branch option in .gitmodules. Git does not currently use this configuration option for anything, but users have used it for several things, so it makes sense to add some syntactic sugar for initializing the value. Current consumers: Ævar uses this setting to designate the upstream branch for pulling submodule updates: $ git submodule foreach 'git checkout $(git config --file $toplevel/.gitmodules submodule.$name.branch) && git pull' as he describes in commit f030c96d8643fa0a1a9b2bd9c2f36a77721fb61f Author: Ævar Arnfjörð Bjarmason Date: Fri May 21 16:10:10 2010 +0000 git-submodule foreach: Add $toplevel variable Gerrit uses the same interpretation for the setting, but because Gerrit has direct access to the subproject repositories, it updates the superproject repositories automatically when a subproject changes. Gerrit also accepts the special value '.', which it expands into the superproject's branch name. Earlier version of this patch remained agnostic on the variable usage, but this was deemed potentially confusing. Future patches in this series will extend the submodule command to use the stored value internally. [1] https://gerrit.googlesource.com/gerrit/+/master/Documentation/user-submodules.txt Signed-off-by: W. Trevor King --- Documentation/git-submodule.txt | 12 ++++++++++-- Documentation/gitmodules.txt | 5 +++++ git-submodule.sh | 19 ++++++++++++++++++- t/t7400-submodule-basic.sh | 25 +++++++++++++++++++++++++ 4 files changed, 58 insertions(+), 3 deletions(-) diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt index b4683bba1..02ea87b4a 100644 --- a/Documentation/git-submodule.txt +++ b/Documentation/git-submodule.txt @@ -9,8 +9,8 @@ git-submodule - Initialize, update or inspect submodules SYNOPSIS -------- [verse] -'git submodule' [--quiet] add [-b branch] [-f|--force] - [--reference ] [--] [] +'git submodule' [--quiet] add [-b branch] [--follow-branch[=]] + [-f|--force] [--reference ] [--] [] 'git submodule' [--quiet] status [--cached] [--recursive] [--] [...] 'git submodule' [--quiet] init [--] [...] 'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase] @@ -209,6 +209,14 @@ OPTIONS --branch:: Branch of repository to add as submodule. +--follow-branch:: + Record a branch name used as `submodule..branch` in + `.gitmodules` for future reference. If you do not list an explicit + name here, the name given with `--branch` will be recorded. If that + is not set either, `HEAD` will be recorded. Because the branch name + is optional, you must use the equal-sign form + (`--follow-branch=`), not `--follow-branch `. + -f:: --force:: This option is only valid for add and update commands. diff --git a/Documentation/gitmodules.txt b/Documentation/gitmodules.txt index 4effd7890..2d0f664e2 100644 --- a/Documentation/gitmodules.txt +++ b/Documentation/gitmodules.txt @@ -47,6 +47,11 @@ submodule..update:: This config option is overridden if 'git submodule update' is given the '--merge', '--rebase' or '--checkout' options. +submodule..branch:: + The branch of the upstream repository. Set with the + "--follow-branch" option to "git submodule add", or directly using + "git config". + submodule..fetchRecurseSubmodules:: This option can be used to control recursive fetching of this submodule. If this option is also present in the submodules entry in diff --git a/git-submodule.sh b/git-submodule.sh index ab6b1107b..3a1954035 100755 --- a/git-submodule.sh +++ b/git-submodule.sh @@ -5,7 +5,7 @@ # Copyright (c) 2007 Lars Hjemli dashless=$(basename "$0" | sed -e 's/-/ /') -USAGE="[--quiet] add [-b branch] [-f|--force] [--reference ] [--] [] +USAGE="[--quiet] add [-b branch] [--follow-branch[=]] [-f|--force] [--reference ] [--] [] or: $dashless [--quiet] status [--cached] [--recursive] [--] [...] or: $dashless [--quiet] init [--] [...] or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference ] [--merge] [--recursive] [--] [...] @@ -20,6 +20,8 @@ require_work_tree command= branch= +follow_branch= +follow_branch_empty= force= reference= cached= @@ -257,6 +259,12 @@ cmd_add() branch=$2 shift ;; + --follow-branch) + follow_branch_empty=true + ;; + --follow-branch=*) + follow_branch="${1#*=}" + ;; -f | --force) force=$1 ;; @@ -328,6 +336,11 @@ cmd_add() git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 && die "$(eval_gettext "'\$sm_path' already exists in the index")" + if test -z "$follow_branch" && test "$follow_branch_empty" = "true" + then + follow_branch="${branch:=HEAD}" + fi + if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1 then eval_gettextln "The following path is ignored by one of your .gitignore files: @@ -366,6 +379,10 @@ Use -f if you really want to add it." >&2 git config -f .gitmodules submodule."$sm_path".path "$sm_path" && git config -f .gitmodules submodule."$sm_path".url "$repo" && + if test -n "$follow_branch" + then + git config -f .gitmodules submodule."$sm_path".branch "$follow_branch" + fi && git add --force .gitmodules || die "$(eval_gettext "Failed to register submodule '\$sm_path'")" } diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh index 539703749..829d37785 100755 --- a/t/t7400-submodule-basic.sh +++ b/t/t7400-submodule-basic.sh @@ -133,6 +133,7 @@ test_expect_success 'submodule add --branch' ' ( cd addtest && git submodule add -b initial "$submodurl" submod-branch && + test -z "$(git config -f .gitmodules submodule.submod-branch.branch)" && git submodule init ) && @@ -211,6 +212,30 @@ test_expect_success 'submodule add with ./, /.. and // in path' ' test_cmp empty untracked ' +test_expect_success 'submodule add --follow-branch' ' + ( + cd addtest && + git submodule add --follow-branch "$submodurl" submod-follow-head && + test "$(git config -f .gitmodules submodule.submod-follow-head.branch)" = "HEAD" + ) +' + +test_expect_success 'submodule add --follow-branch --branch' ' + ( + cd addtest && + git submodule add --follow-branch -b initial "$submodurl" submod-auto-follow && + test "$(git config -f .gitmodules submodule.submod-auto-follow.branch)" = "initial" + ) +' + +test_expect_success 'submodule add --follow-branch= --branch' ' + ( + cd addtest && + git submodule add --follow-branch=final -b initial "$submodurl" submod-follow && + test "$(git config -f .gitmodules submodule.submod-follow.branch)" = "final" + ) +' + test_expect_success 'setup - add an example entry to .gitmodules' ' GIT_CONFIG=.gitmodules \ git config submodule.example.url git://example.com/init.git -- 2.26.2