git/worktree.c, branch v2.9.2

Merge branch 'nd/worktree-various-heads'

2016-05-23T21:54:29Z

The experimental "multiple worktree" feature gains more safety to forbid operations on a branch that is checked out or being actively worked on elsewhere, by noticing that e.g. it is being rebased. * nd/worktree-various-heads: branch: do not rename a branch under bisect or rebase worktree.c: check whether branch is bisected in another worktree wt-status.c: split bisect detection out of wt_status_get_state() worktree.c: check whether branch is rebased in another worktree worktree.c: avoid referencing to worktrees[i] multiple times wt-status.c: make wt_status_check_rebase() work on any worktree wt-status.c: split rebase detection out of wt_status_get_state() path.c: refactor and add worktree_git_path() worktree.c: mark current worktree worktree.c: make find_shared_symref() return struct worktree * worktree.c: store "id" instead of "git_dir" path.c: add git_common_path() and strbuf_git_common_path() dir.c: rename str(n)cmp_icase to fspath(n)cmp

typofix: assorted typofixes in comments, documentation and messages

2016-05-06T20:16:37Z

Many instances of duplicate words (e.g. "the the path") and a few typoes are fixed, originally in multiple patches. wildmatch: fix duplicate words of "the" t: fix duplicate words of "output" transport-helper: fix duplicate words of "read" Git.pm: fix duplicate words of "return" path: fix duplicate words of "look" pack-protocol.txt: fix duplicate words of "the" precompose-utf8: fix typo of "sequences" split-index: fix typo worktree.c: fix typo remote-ext: fix typo utf8: fix duplicate words of "the" git-cvsserver: fix duplicate words Signed-off-by: Li Peng Signed-off-by: Junio C Hamano

branch: do not rename a branch under bisect or rebase

2016-04-22T21:09:39Z

The branch name in that case could be saved in rebase's head_name or bisect's BISECT_START files. Ideally we should try to update them as well. But it's trickier (*). Let's play safe and see if the user complains about inconveniences before doing that. (*) If we do it, bisect and rebase need to provide an API to rename branches. We can't do it in worktree.c or builtin/branch.c because when other people change rebase/bisect code, they may not be aware of this code and accidentally break it (e.g. rename the branch file, or refer to the branch in new files). It's a lot more work. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: check whether branch is bisected in another worktree

2016-04-22T21:09:39Z

Similar to the rebase case, we want to detect if "HEAD" in some worktree is being bisected because 1) we do not want to checkout this branch in another worktree, after bisect is done it will want to go back to this branch 2) we do not want to delete the branch is either or git bisect will fail to return to the (long gone) branch Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: check whether branch is rebased in another worktree

2016-04-22T21:09:38Z

This function find_shared_symref() is used in a couple places: 1) in builtin/branch.c: it's used to detect if a branch is checked out elsewhere and refuse to delete the branch. 2) in builtin/notes.c: it's used to detect if a note is being merged in another worktree 3) in branch.c, the function die_if_checked_out() is actually used by "git checkout" and "git worktree add" to see if a branch is already checked out elsewhere and refuse the operation. In cases 1 and 3, if a rebase is ongoing, "HEAD" will be in detached mode, find_shared_symref() fails to detect it and declares "no branch is checked out here", which is not really what we want. This patch tightens the test. If the given symref is "HEAD", we try to detect if rebase is ongoing. If so return the branch being rebased. This makes checkout and branch delete operations safer because you can't checkout a branch being rebased in another place, or delete it. Special case for checkout. If the current branch is being rebased, git-rebase.sh may use "git checkout" to abort and return back to the original branch. The updated test in find_shared_symref() will prevent that and "git rebase --abort" will fail as a result. find_shared_symref() and die_if_checked_out() have to learn a new option ignore_current_worktree to loosen the test a bit. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: avoid referencing to worktrees[i] multiple times

2016-04-22T21:09:38Z

Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: mark current worktree

2016-04-22T21:09:38Z

Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: make find_shared_symref() return struct worktree *

2016-04-22T21:09:37Z

This gives the caller more information and they can answer things like, "is it the main worktree" or "is it the current worktree". The latter question is needed for the "checkout a rebase branch" case later. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: store "id" instead of "git_dir"

2016-04-22T21:09:37Z

We can reconstruct git_dir from id quite easily. It's a bit hackier to do the reverse. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

worktree.c: fix indentation

2016-01-19T19:22:29Z

Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano