int quiet;
int merge;
int force;
+ int force_detach;
int writeout_stage;
int writeout_error;
strbuf_addf(&msg, "checkout: moving from %s to %s",
old_desc ? old_desc : "(invalid)", new->name);
- if (new->path) {
+ if (!strcmp(new->name, "HEAD") && !new->path && !opts->force_detach) {
+ /* Nothing to do. */
+ } else if (opts->force_detach || !new->path) { /* No longer on any branch. */
+ update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL,
+ REF_NODEREF, DIE_ON_ERR);
+ if (!opts->quiet) {
+ if (old->path && advice_detached_head)
+ detach_advice(old->path, new->name);
+ describe_detached_head("HEAD is now at", new->commit);
+ }
+ } else if (new->path) { /* Switch branches. */
create_symref("HEAD", new->path, msg.buf);
if (!opts->quiet) {
if (old->path && !strcmp(new->path, old->path))
if (!file_exists(ref_file) && file_exists(log_file))
remove_path(log_file);
}
- } else if (strcmp(new->name, "HEAD")) {
- update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL,
- REF_NODEREF, DIE_ON_ERR);
- if (!opts->quiet) {
- if (old->path && advice_detached_head)
- detach_advice(old->path, new->name);
- describe_detached_head("HEAD is now at", new->commit);
- }
}
remove_branch_state();
strbuf_release(&msg);
- if (!opts->quiet && (new->path || !strcmp(new->name, "HEAD")))
+ if (!opts->quiet &&
+ (new->path || (!opts->force_detach && !strcmp(new->name, "HEAD"))))
report_tracking(new);
}
OPT_STRING('B', NULL, &opts.new_branch_force, "branch",
"create/reset and checkout a branch"),
OPT_BOOLEAN('l', NULL, &opts.new_branch_log, "create reflog for new branch"),
+ OPT_BOOLEAN(0, "detach", &opts.force_detach, "detach the HEAD at named commit"),
OPT_SET_INT('t', "track", &opts.track, "set upstream info for new branch",
BRANCH_TRACK_EXPLICIT),
OPT_STRING(0, "orphan", &opts.new_orphan_branch, "new branch", "new unparented branch"),
opts.new_branch = opts.new_branch_force;
if (patch_mode && (opts.track > 0 || opts.new_branch
- || opts.new_branch_log || opts.merge || opts.force))
+ || opts.new_branch_log || opts.merge || opts.force
+ || opts.force_detach))
die ("--patch is incompatible with all other options");
+ if (opts.force_detach && (opts.new_branch || opts.new_orphan_branch))
+ die("--detach cannot be used with -b/-B/--orphan");
+ if (opts.force_detach && 0 < opts.track)
+ die("--detach cannot be used with -t");
+
/* --track without -b should DWIM */
if (0 < opts.track && !opts.new_branch) {
const char *argv0 = argv[0];
}
}
+ if (opts.force_detach)
+ die("git checkout: --detach does not take a path argument");
+
if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
die("git checkout: --ours/--theirs, --force and --merge are incompatible when\nchecking out of the index.");