From 15a147e61898d25ec8b539190e87f3a09592c9c8 Mon Sep 17 00:00:00 2001 From: Martin von Zweigbergk Date: Wed, 9 Feb 2011 20:54:02 -0500 Subject: [PATCH] rebase: use @{upstream} if no upstream specified 'git rebase' without arguments is currently not supported. Make it default to 'git rebase @{upstream}'. That is also what 'git pull [--rebase]' defaults to, so it only makes sense that 'git rebase' defaults to the same thing. Defaulting to @{upstream} will make it possible to run e.g. 'git rebase -i' without arguments, which is probably a quite common use case. It also improves the scenario where you have multiple branches that rebase against a remote-tracking branch, where you currently have to choose between the extra network delay of 'git pull' or the slightly awkward keys to enter 'git rebase @{u}'. The error reporting when no upstream is configured for the current branch or when no branch is checked out is reused from git-pull.sh. A function is extracted into git-parse-remote.sh for this purpose. Helped-by: Yann Dirson Helped-by: Jonathan Nieder Signed-off-by: Martin von Zweigbergk Signed-off-by: Junio C Hamano --- Documentation/config.txt | 2 +- Documentation/git-rebase.txt | 11 +++++++++-- git-parse-remote.sh | 38 ++++++++++++++++++++++++++++++++++++ git-pull.sh | 32 ++++-------------------------- git-rebase.sh | 21 ++++++++++++++------ t/t3400-rebase.sh | 27 ++++++++++++++++--------- 6 files changed, 85 insertions(+), 46 deletions(-) diff --git a/Documentation/config.txt b/Documentation/config.txt index c5e183516a..b4e65b8151 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -646,7 +646,7 @@ branch..remote:: branch..merge:: Defines, together with branch..remote, the upstream branch - for the given branch. It tells 'git fetch'/'git pull' which + for the given branch. It tells 'git fetch'/'git pull'/'git rebase' which branch to merge and can also affect 'git push' (see push.default). When in branch , it tells 'git fetch' the default refspec to be marked for merging in FETCH_HEAD. The value is diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt index 96680c8456..d3e998df46 100644 --- a/Documentation/git-rebase.txt +++ b/Documentation/git-rebase.txt @@ -9,7 +9,7 @@ SYNOPSIS -------- [verse] 'git rebase' [-i | --interactive] [options] [--onto ] - [] + [] [] 'git rebase' [-i | --interactive] [options] --onto --root [] @@ -21,6 +21,12 @@ If is specified, 'git rebase' will perform an automatic `git checkout ` before doing anything else. Otherwise it remains on the current branch. +If is not specified, the upstream configured in +branch..remote and branch..merge options will be used; see +linkgit:git-config[1] for details. If you are currently not on any +branch or if the current branch does not have a configured upstream, +the rebase will abort. + All changes made by commits in the current branch but that are not in are saved to a temporary area. This is the same set of commits that would be shown by `git log ..HEAD` (or @@ -216,7 +222,8 @@ leave out at most one of A and B, in which case it defaults to HEAD. :: Upstream branch to compare against. May be any valid commit, - not just an existing branch name. + not just an existing branch name. Defaults to the configured + upstream for the current branch. :: Working branch; defaults to HEAD. diff --git a/git-parse-remote.sh b/git-parse-remote.sh index 1cc2ba6e09..be17ecbd1e 100644 --- a/git-parse-remote.sh +++ b/git-parse-remote.sh @@ -99,3 +99,41 @@ get_remote_merge_branch () { esac esac } + +error_on_missing_default_upstream () { + cmd="$1" + op_type="$2" + op_prep="$3" + example="$4" + branch_name=$(git symbolic-ref -q HEAD) + if test -z "$branch_name" + then + echo "You are not currently on a branch, so I cannot use any +'branch..merge' in your configuration file. +Please specify which branch you want to $op_type $op_prep on the command +line and try again (e.g. '$example'). +See git-${cmd}(1) for details." + else + echo "You asked me to $cmd without telling me which branch you +want to $op_type $op_prep, and 'branch.${branch_name#refs/heads/}.merge' in +your configuration file does not tell me, either. Please +specify which branch you want to use on the command line and +try again (e.g. '$example'). +See git-${cmd}(1) for details. + +If you often $op_type $op_prep the same branch, you may want to +use something like the following in your configuration file: + [branch \"${branch_name#refs/heads/}\"] + remote = + merge = " + test rebase = "$op_type" && + echo " rebase = true" + echo " + [remote \"\"] + url = + fetch = + +See git-config(1) for details." + fi + exit 1 +} diff --git a/git-pull.sh b/git-pull.sh index eb87f49062..2cdea26265 100755 --- a/git-pull.sh +++ b/git-pull.sh @@ -163,34 +163,10 @@ error_on_no_merge_candidates () { echo "You asked to pull from the remote '$1', but did not specify" echo "a branch. Because this is not the default configured remote" echo "for your current branch, you must specify a branch on the command line." - elif [ -z "$curr_branch" ]; then - echo "You are not currently on a branch, so I cannot use any" - echo "'branch..merge' in your configuration file." - echo "Please specify which remote branch you want to use on the command" - echo "line and try again (e.g. 'git pull ')." - echo "See git-pull(1) for details." - elif [ -z "$upstream" ]; then - echo "You asked me to pull without telling me which branch you" - echo "want to $op_type $op_prep, and 'branch.${curr_branch}.merge' in" - echo "your configuration file does not tell me, either. Please" - echo "specify which branch you want to use on the command line and" - echo "try again (e.g. 'git pull ')." - echo "See git-pull(1) for details." - echo - echo "If you often $op_type $op_prep the same branch, you may want to" - echo "use something like the following in your configuration file:" - echo - echo " [branch \"${curr_branch}\"]" - echo " remote = " - echo " merge = " - test rebase = "$op_type" && - echo " rebase = true" - echo - echo " [remote \"\"]" - echo " url = " - echo " fetch = " - echo - echo "See git-config(1) for details." + elif [ -z "$curr_branch" -o -z "$upstream" ]; then + . git-parse-remote + error_on_missing_default_upstream "pull" $op_type $op_prep \ + "git pull " else echo "Your configuration specifies to $op_type $op_prep the ref '${upstream#refs/heads/}'" echo "from the remote, but no such ref was fetched." diff --git a/git-rebase.sh b/git-rebase.sh index be9ec2a1f7..a040ab51cc 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -3,7 +3,7 @@ # Copyright (c) 2005 Junio C Hamano. # -USAGE='[--interactive | -i] [-v] [--force-rebase | -f] [--no-ff] [--onto ] (|--root) [] [--quiet | -q]' +USAGE='[--interactive | -i] [-v] [--force-rebase | -f] [--no-ff] [--onto ] [|--root] [] [--quiet | -q]' LONG_USAGE='git-rebase replaces with a new branch of the same name. When the --onto option is provided the new branch starts out with a HEAD equal to , otherwise it is equal to @@ -345,8 +345,6 @@ and run me again. I am stopping in case you still have something valuable there.' fi -test $# -eq 0 && test -z "$rebase_root" && usage - if test -n "$interactive_rebase" then type=interactive @@ -362,9 +360,20 @@ fi if test -z "$rebase_root" then - # The upstream head must be given. Make sure it is valid. - upstream_name="$1" - shift + case "$#" in + 0) + if ! upstream_name=$(git rev-parse --symbolic-full-name \ + --verify -q @{upstream} 2>/dev/null) + then + . git-parse-remote + error_on_missing_default_upstream "rebase" "rebase" \ + "against" "git rebase " + fi + ;; + *) upstream_name="$1" + shift + ;; + esac upstream=`git rev-parse --verify "${upstream_name}^0"` || die "invalid upstream $upstream_name" upstream_arg="$upstream_name" diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh index 349eebd542..6eaecec906 100755 --- a/t/t3400-rebase.sh +++ b/t/t3400-rebase.sh @@ -158,15 +158,24 @@ test_expect_success 'Show verbose error when HEAD could not be detached' ' ' rm -f B -test_expect_success 'dump usage when upstream arg is missing' ' - git checkout -b usage topic && - test_must_fail git rebase 2>error1 && - grep "[Uu]sage" error1 && - test_must_fail git rebase --abort 2>error2 && - grep "No rebase in progress" error2 && - test_must_fail git rebase --onto master 2>error3 && - grep "[Uu]sage" error3 && - ! grep "can.t shift" error3 +test_expect_success 'fail when upstream arg is missing and not on branch' ' + git checkout topic && + test_must_fail git rebase >output.out && + grep "You are not currently on a branch" output.out +' + +test_expect_success 'fail when upstream arg is missing and not configured' ' + git checkout -b no-config topic && + test_must_fail git rebase >output.out && + grep "branch.no-config.merge" output.out +' + +test_expect_success 'default to @{upstream} when upstream arg is missing' ' + git checkout -b default topic && + git config branch.default.remote . + git config branch.default.merge refs/heads/master + git rebase && + test "$(git rev-parse default~1)" = "$(git rev-parse master)" ' test_expect_success 'rebase -q is quiet' '