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worktree: add --guess-remote flag to add subcommand

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Currently 'git worktree add <path>' creates a new branch named after the
basename of the <path>, that matches the HEAD of whichever worktree we
were on when calling "git worktree add <path>".

It's sometimes useful to have 'git worktree add <path> behave more like
the dwim machinery in 'git checkout <new-branch>', i.e. check if the new
branch name, derived from the basename of the <path>, uniquely matches
the branch name of a remote-tracking branch, and if so check out that
branch and set the upstream to the remote-tracking branch.

Add a new --guess-remote option that enables exactly that behaviour.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Thomas Gummerer
2017-11-29 20:04:50 +00:00
committed by Junio C Hamano
parent 4e85333197
commit 71d6682d8c
3 changed files with 46 additions and 0 deletions
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10
builtin/worktree.c
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@ -343,6 +343,7 @@ static int add(int ac, const char **av, const char *prefix)
char *path;
const char *branch;
const char *opt_track = NULL;
int guess_remote = 0;
struct option options[] = {
OPT__FORCE(&opts.force, N_("checkout <branch> even if already checked out in other worktree")),
OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
@ -355,6 +356,8 @@ static int add(int ac, const char **av, const char *prefix)
OPT_PASSTHRU(0, "track", &opt_track, NULL,
N_("set up tracking mode (see git-branch(1))"),
PARSE_OPT_NOARG | PARSE_OPT_OPTARG),
OPT_BOOL(0, "guess-remote", &guess_remote,
N_("try to match the new branch name with a remote-tracking branch")),
OPT_END()
};
@ -389,6 +392,13 @@ static int add(int ac, const char **av, const char *prefix)
int n;
const char *s = worktree_basename(path, &n);
opts.new_branch = xstrndup(s, n);
if (guess_remote) {
struct object_id oid;
const char *remote =
unique_tracking_name(opts.new_branch, &oid);
if (remote)
branch = remote;
}
}
if (ac == 2 && !opts.new_branch && !opts.detach) {