git-commit-vandalism/builtin/branch.c
Junio C Hamano c13c783c9d Merge branch 'km/delete-ref-reflog-message'
"git update-ref -d" and other operations to delete references did
not leave any entry in HEAD's reflog when the reference being
deleted was the current branch.  This is not a problem in practice
because you do not want to delete the branch you are currently on,
but caused renaming of the current branch to something else not to
be logged in a useful way.

* km/delete-ref-reflog-message:
  branch: record creation of renamed branch in HEAD's log
  rename_ref: replace empty message in HEAD's log
  update-ref: pass reflog message to delete_ref()
  delete_ref: accept a reflog message argument
2017-02-27 13:57:18 -08:00

778 lines
23 KiB
C

/*
* Builtin "git branch"
*
* Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/
#include "cache.h"
#include "color.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
#include "remote.h"
#include "parse-options.h"
#include "branch.h"
#include "diff.h"
#include "revision.h"
#include "string-list.h"
#include "column.h"
#include "utf8.h"
#include "wt-status.h"
#include "ref-filter.h"
#include "worktree.h"
static const char * const builtin_branch_usage[] = {
N_("git branch [<options>] [-r | -a] [--merged | --no-merged]"),
N_("git branch [<options>] [-l] [-f] <branch-name> [<start-point>]"),
N_("git branch [<options>] [-r] (-d | -D) <branch-name>..."),
N_("git branch [<options>] (-m | -M) [<old-branch>] <new-branch>"),
N_("git branch [<options>] [-r | -a] [--points-at]"),
N_("git branch [<options>] [-r | -a] [--format]"),
NULL
};
static const char *head;
static unsigned char head_sha1[20];
static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
GIT_COLOR_NORMAL, /* PLAIN */
GIT_COLOR_RED, /* REMOTE */
GIT_COLOR_NORMAL, /* LOCAL */
GIT_COLOR_GREEN, /* CURRENT */
GIT_COLOR_BLUE, /* UPSTREAM */
};
enum color_branch {
BRANCH_COLOR_RESET = 0,
BRANCH_COLOR_PLAIN = 1,
BRANCH_COLOR_REMOTE = 2,
BRANCH_COLOR_LOCAL = 3,
BRANCH_COLOR_CURRENT = 4,
BRANCH_COLOR_UPSTREAM = 5
};
static struct string_list output = STRING_LIST_INIT_DUP;
static unsigned int colopts;
static int parse_branch_color_slot(const char *slot)
{
if (!strcasecmp(slot, "plain"))
return BRANCH_COLOR_PLAIN;
if (!strcasecmp(slot, "reset"))
return BRANCH_COLOR_RESET;
if (!strcasecmp(slot, "remote"))
return BRANCH_COLOR_REMOTE;
if (!strcasecmp(slot, "local"))
return BRANCH_COLOR_LOCAL;
if (!strcasecmp(slot, "current"))
return BRANCH_COLOR_CURRENT;
if (!strcasecmp(slot, "upstream"))
return BRANCH_COLOR_UPSTREAM;
return -1;
}
static int git_branch_config(const char *var, const char *value, void *cb)
{
const char *slot_name;
if (starts_with(var, "column."))
return git_column_config(var, value, "branch", &colopts);
if (!strcmp(var, "color.branch")) {
branch_use_color = git_config_colorbool(var, value);
return 0;
}
if (skip_prefix(var, "color.branch.", &slot_name)) {
int slot = parse_branch_color_slot(slot_name);
if (slot < 0)
return 0;
if (!value)
return config_error_nonbool(var);
return color_parse(value, branch_colors[slot]);
}
return git_color_default_config(var, value, cb);
}
static const char *branch_get_color(enum color_branch ix)
{
if (want_color(branch_use_color))
return branch_colors[ix];
return "";
}
static int branch_merged(int kind, const char *name,
struct commit *rev, struct commit *head_rev)
{
/*
* This checks whether the merge bases of branch and HEAD (or
* the other branch this branch builds upon) contains the
* branch, which means that the branch has already been merged
* safely to HEAD (or the other branch).
*/
struct commit *reference_rev = NULL;
const char *reference_name = NULL;
void *reference_name_to_free = NULL;
int merged;
if (kind == FILTER_REFS_BRANCHES) {
struct branch *branch = branch_get(name);
const char *upstream = branch_get_upstream(branch, NULL);
unsigned char sha1[20];
if (upstream &&
(reference_name = reference_name_to_free =
resolve_refdup(upstream, RESOLVE_REF_READING,
sha1, NULL)) != NULL)
reference_rev = lookup_commit_reference(sha1);
}
if (!reference_rev)
reference_rev = head_rev;
merged = in_merge_bases(rev, reference_rev);
/*
* After the safety valve is fully redefined to "check with
* upstream, if any, otherwise with HEAD", we should just
* return the result of the in_merge_bases() above without
* any of the following code, but during the transition period,
* a gentle reminder is in order.
*/
if ((head_rev != reference_rev) &&
in_merge_bases(rev, head_rev) != merged) {
if (merged)
warning(_("deleting branch '%s' that has been merged to\n"
" '%s', but not yet merged to HEAD."),
name, reference_name);
else
warning(_("not deleting branch '%s' that is not yet merged to\n"
" '%s', even though it is merged to HEAD."),
name, reference_name);
}
free(reference_name_to_free);
return merged;
}
static int check_branch_commit(const char *branchname, const char *refname,
const unsigned char *sha1, struct commit *head_rev,
int kinds, int force)
{
struct commit *rev = lookup_commit_reference(sha1);
if (!rev) {
error(_("Couldn't look up commit object for '%s'"), refname);
return -1;
}
if (!force && !branch_merged(kinds, branchname, rev, head_rev)) {
error(_("The branch '%s' is not fully merged.\n"
"If you are sure you want to delete it, "
"run 'git branch -D %s'."), branchname, branchname);
return -1;
}
return 0;
}
static void delete_branch_config(const char *branchname)
{
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "branch.%s", branchname);
if (git_config_rename_section(buf.buf, NULL) < 0)
warning(_("Update of config-file failed"));
strbuf_release(&buf);
}
static int delete_branches(int argc, const char **argv, int force, int kinds,
int quiet)
{
struct commit *head_rev = NULL;
unsigned char sha1[20];
char *name = NULL;
const char *fmt;
int i;
int ret = 0;
int remote_branch = 0;
struct strbuf bname = STRBUF_INIT;
switch (kinds) {
case FILTER_REFS_REMOTES:
fmt = "refs/remotes/%s";
/* For subsequent UI messages */
remote_branch = 1;
force = 1;
break;
case FILTER_REFS_BRANCHES:
fmt = "refs/heads/%s";
break;
default:
die(_("cannot use -a with -d"));
}
if (!force) {
head_rev = lookup_commit_reference(head_sha1);
if (!head_rev)
die(_("Couldn't look up commit object for HEAD"));
}
for (i = 0; i < argc; i++, strbuf_release(&bname)) {
char *target = NULL;
int flags = 0;
strbuf_branchname(&bname, argv[i]);
free(name);
name = mkpathdup(fmt, bname.buf);
if (kinds == FILTER_REFS_BRANCHES) {
const struct worktree *wt =
find_shared_symref("HEAD", name);
if (wt) {
error(_("Cannot delete branch '%s' "
"checked out at '%s'"),
bname.buf, wt->path);
ret = 1;
continue;
}
}
target = resolve_refdup(name,
RESOLVE_REF_READING
| RESOLVE_REF_NO_RECURSE
| RESOLVE_REF_ALLOW_BAD_NAME,
sha1, &flags);
if (!target) {
error(remote_branch
? _("remote-tracking branch '%s' not found.")
: _("branch '%s' not found."), bname.buf);
ret = 1;
continue;
}
if (!(flags & (REF_ISSYMREF|REF_ISBROKEN)) &&
check_branch_commit(bname.buf, name, sha1, head_rev, kinds,
force)) {
ret = 1;
goto next;
}
if (delete_ref(NULL, name, is_null_sha1(sha1) ? NULL : sha1,
REF_NODEREF)) {
error(remote_branch
? _("Error deleting remote-tracking branch '%s'")
: _("Error deleting branch '%s'"),
bname.buf);
ret = 1;
goto next;
}
if (!quiet) {
printf(remote_branch
? _("Deleted remote-tracking branch %s (was %s).\n")
: _("Deleted branch %s (was %s).\n"),
bname.buf,
(flags & REF_ISBROKEN) ? "broken"
: (flags & REF_ISSYMREF) ? target
: find_unique_abbrev(sha1, DEFAULT_ABBREV));
}
delete_branch_config(bname.buf);
next:
free(target);
}
free(name);
return(ret);
}
static int calc_maxwidth(struct ref_array *refs, int remote_bonus)
{
int i, max = 0;
for (i = 0; i < refs->nr; i++) {
struct ref_array_item *it = refs->items[i];
const char *desc = it->refname;
int w;
skip_prefix(it->refname, "refs/heads/", &desc);
skip_prefix(it->refname, "refs/remotes/", &desc);
if (it->kind == FILTER_REFS_DETACHED_HEAD) {
char *head_desc = get_head_description();
w = utf8_strwidth(head_desc);
free(head_desc);
} else
w = utf8_strwidth(desc);
if (it->kind == FILTER_REFS_REMOTES)
w += remote_bonus;
if (w > max)
max = w;
}
return max;
}
static const char *quote_literal_for_format(const char *s)
{
static struct strbuf buf = STRBUF_INIT;
strbuf_reset(&buf);
while (*s) {
const char *ep = strchrnul(s, '%');
if (s < ep)
strbuf_add(&buf, s, ep - s);
if (*ep == '%') {
strbuf_addstr(&buf, "%%");
s = ep + 1;
} else {
s = ep;
}
}
return buf.buf;
}
static char *build_format(struct ref_filter *filter, int maxwidth, const char *remote_prefix)
{
struct strbuf fmt = STRBUF_INIT;
struct strbuf local = STRBUF_INIT;
struct strbuf remote = STRBUF_INIT;
strbuf_addf(&fmt, "%%(if)%%(HEAD)%%(then)* %s%%(else) %%(end)",
branch_get_color(BRANCH_COLOR_CURRENT));
if (filter->verbose) {
strbuf_addf(&local, "%%(align:%d,left)%%(refname:lstrip=2)%%(end)", maxwidth);
strbuf_addf(&local, "%s", branch_get_color(BRANCH_COLOR_RESET));
strbuf_addf(&local, " %%(objectname:short=7) ");
if (filter->verbose > 1)
strbuf_addf(&local, "%%(if)%%(upstream)%%(then)[%s%%(upstream:short)%s%%(if)%%(upstream:track)"
"%%(then): %%(upstream:track,nobracket)%%(end)] %%(end)%%(contents:subject)",
branch_get_color(BRANCH_COLOR_UPSTREAM), branch_get_color(BRANCH_COLOR_RESET));
else
strbuf_addf(&local, "%%(if)%%(upstream:track)%%(then)%%(upstream:track) %%(end)%%(contents:subject)");
strbuf_addf(&remote, "%s%%(align:%d,left)%s%%(refname:lstrip=2)%%(end)%s%%(if)%%(symref)%%(then) -> %%(symref:short)"
"%%(else) %%(objectname:short=7) %%(contents:subject)%%(end)",
branch_get_color(BRANCH_COLOR_REMOTE), maxwidth, quote_literal_for_format(remote_prefix),
branch_get_color(BRANCH_COLOR_RESET));
} else {
strbuf_addf(&local, "%%(refname:lstrip=2)%s%%(if)%%(symref)%%(then) -> %%(symref:short)%%(end)",
branch_get_color(BRANCH_COLOR_RESET));
strbuf_addf(&remote, "%s%s%%(refname:lstrip=2)%s%%(if)%%(symref)%%(then) -> %%(symref:short)%%(end)",
branch_get_color(BRANCH_COLOR_REMOTE), quote_literal_for_format(remote_prefix),
branch_get_color(BRANCH_COLOR_RESET));
}
strbuf_addf(&fmt, "%%(if:notequals=refs/remotes)%%(refname:rstrip=-2)%%(then)%s%%(else)%s%%(end)", local.buf, remote.buf);
strbuf_release(&local);
strbuf_release(&remote);
return strbuf_detach(&fmt, NULL);
}
static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sorting, const char *format)
{
int i;
struct ref_array array;
int maxwidth = 0;
const char *remote_prefix = "";
struct strbuf out = STRBUF_INIT;
char *to_free = NULL;
/*
* If we are listing more than just remote branches,
* then remote branches will have a "remotes/" prefix.
* We need to account for this in the width.
*/
if (filter->kind != FILTER_REFS_REMOTES)
remote_prefix = "remotes/";
memset(&array, 0, sizeof(array));
filter_refs(&array, filter, filter->kind | FILTER_REFS_INCLUDE_BROKEN);
if (filter->verbose)
maxwidth = calc_maxwidth(&array, strlen(remote_prefix));
if (!format)
format = to_free = build_format(filter, maxwidth, remote_prefix);
verify_ref_format(format);
ref_array_sort(sorting, &array);
for (i = 0; i < array.nr; i++) {
format_ref_array_item(array.items[i], format, 0, &out);
if (column_active(colopts)) {
assert(!filter->verbose && "--column and --verbose are incompatible");
/* format to a string_list to let print_columns() do its job */
string_list_append(&output, out.buf);
} else {
fwrite(out.buf, 1, out.len, stdout);
putchar('\n');
}
strbuf_release(&out);
}
ref_array_clear(&array);
free(to_free);
}
static void reject_rebase_or_bisect_branch(const char *target)
{
struct worktree **worktrees = get_worktrees(0);
int i;
for (i = 0; worktrees[i]; i++) {
struct worktree *wt = worktrees[i];
if (!wt->is_detached)
continue;
if (is_worktree_being_rebased(wt, target))
die(_("Branch %s is being rebased at %s"),
target, wt->path);
if (is_worktree_being_bisected(wt, target))
die(_("Branch %s is being bisected at %s"),
target, wt->path);
}
free_worktrees(worktrees);
}
static void rename_branch(const char *oldname, const char *newname, int force)
{
struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
int recovery = 0;
int clobber_head_ok;
if (!oldname)
die(_("cannot rename the current branch while not on any."));
if (strbuf_check_branch_ref(&oldref, oldname)) {
/*
* Bad name --- this could be an attempt to rename a
* ref that we used to allow to be created by accident.
*/
if (ref_exists(oldref.buf))
recovery = 1;
else
die(_("Invalid branch name: '%s'"), oldname);
}
/*
* A command like "git branch -M currentbranch currentbranch" cannot
* cause the worktree to become inconsistent with HEAD, so allow it.
*/
clobber_head_ok = !strcmp(oldname, newname);
validate_new_branchname(newname, &newref, force, clobber_head_ok);
reject_rebase_or_bisect_branch(oldref.buf);
strbuf_addf(&logmsg, "Branch: renamed %s to %s",
oldref.buf, newref.buf);
if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
die(_("Branch rename failed"));
if (recovery)
warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
if (replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
strbuf_release(&logmsg);
strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
strbuf_release(&oldref);
strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
strbuf_release(&newref);
if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
die(_("Branch is renamed, but update of config-file failed"));
strbuf_release(&oldsection);
strbuf_release(&newsection);
}
static const char edit_description[] = "BRANCH_DESCRIPTION";
static int edit_branch_description(const char *branch_name)
{
struct strbuf buf = STRBUF_INIT;
struct strbuf name = STRBUF_INIT;
read_branch_desc(&buf, branch_name);
if (!buf.len || buf.buf[buf.len-1] != '\n')
strbuf_addch(&buf, '\n');
strbuf_commented_addf(&buf,
_("Please edit the description for the branch\n"
" %s\n"
"Lines starting with '%c' will be stripped.\n"),
branch_name, comment_line_char);
write_file_buf(git_path(edit_description), buf.buf, buf.len);
strbuf_reset(&buf);
if (launch_editor(git_path(edit_description), &buf, NULL)) {
strbuf_release(&buf);
return -1;
}
strbuf_stripspace(&buf, 1);
strbuf_addf(&name, "branch.%s.description", branch_name);
git_config_set(name.buf, buf.len ? buf.buf : NULL);
strbuf_release(&name);
strbuf_release(&buf);
return 0;
}
int cmd_branch(int argc, const char **argv, const char *prefix)
{
int delete = 0, rename = 0, force = 0, list = 0;
int reflog = 0, edit_description = 0;
int quiet = 0, unset_upstream = 0;
const char *new_upstream = NULL;
enum branch_track track;
struct ref_filter filter;
int icase = 0;
static struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
const char *format = NULL;
struct option options[] = {
OPT_GROUP(N_("Generic options")),
OPT__VERBOSE(&filter.verbose,
N_("show hash and subject, give twice for upstream branch")),
OPT__QUIET(&quiet, N_("suppress informational messages")),
OPT_SET_INT('t', "track", &track, N_("set up tracking mode (see git-pull(1))"),
BRANCH_TRACK_EXPLICIT),
OPT_SET_INT( 0, "set-upstream", &track, N_("change upstream info"),
BRANCH_TRACK_OVERRIDE),
OPT_STRING('u', "set-upstream-to", &new_upstream, N_("upstream"), N_("change the upstream info")),
OPT_BOOL(0, "unset-upstream", &unset_upstream, N_("Unset the upstream info")),
OPT__COLOR(&branch_use_color, N_("use colored output")),
OPT_SET_INT('r', "remotes", &filter.kind, N_("act on remote-tracking branches"),
FILTER_REFS_REMOTES),
OPT_CONTAINS(&filter.with_commit, N_("print only branches that contain the commit")),
OPT_WITH(&filter.with_commit, N_("print only branches that contain the commit")),
OPT__ABBREV(&filter.abbrev),
OPT_GROUP(N_("Specific git-branch actions:")),
OPT_SET_INT('a', "all", &filter.kind, N_("list both remote-tracking and local branches"),
FILTER_REFS_REMOTES | FILTER_REFS_BRANCHES),
OPT_BIT('d', "delete", &delete, N_("delete fully merged branch"), 1),
OPT_BIT('D', NULL, &delete, N_("delete branch (even if not merged)"), 2),
OPT_BIT('m', "move", &rename, N_("move/rename a branch and its reflog"), 1),
OPT_BIT('M', NULL, &rename, N_("move/rename a branch, even if target exists"), 2),
OPT_BOOL(0, "list", &list, N_("list branch names")),
OPT_BOOL('l', "create-reflog", &reflog, N_("create the branch's reflog")),
OPT_BOOL(0, "edit-description", &edit_description,
N_("edit the description for the branch")),
OPT__FORCE(&force, N_("force creation, move/rename, deletion")),
OPT_MERGED(&filter, N_("print only branches that are merged")),
OPT_NO_MERGED(&filter, N_("print only branches that are not merged")),
OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
N_("field name to sort on"), &parse_opt_ref_sorting),
{
OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
N_("print only branches of the object"), 0, parse_opt_object_name
},
OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
OPT_STRING( 0 , "format", &format, N_("format"), N_("format to use for the output")),
OPT_END(),
};
setup_ref_filter_porcelain_msg();
memset(&filter, 0, sizeof(filter));
filter.kind = FILTER_REFS_BRANCHES;
filter.abbrev = -1;
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_branch_usage, options);
git_config(git_branch_config, NULL);
track = git_branch_track;
head = resolve_refdup("HEAD", 0, head_sha1, NULL);
if (!head)
die(_("Failed to resolve HEAD as a valid ref."));
if (!strcmp(head, "HEAD"))
filter.detached = 1;
else if (!skip_prefix(head, "refs/heads/", &head))
die(_("HEAD not found below refs/heads!"));
argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
0);
if (!delete && !rename && !edit_description && !new_upstream && !unset_upstream && argc == 0)
list = 1;
if (filter.with_commit || filter.merge != REF_FILTER_MERGED_NONE || filter.points_at.nr)
list = 1;
if (!!delete + !!rename + !!new_upstream +
list + unset_upstream > 1)
usage_with_options(builtin_branch_usage, options);
if (filter.abbrev == -1)
filter.abbrev = DEFAULT_ABBREV;
filter.ignore_case = icase;
finalize_colopts(&colopts, -1);
if (filter.verbose) {
if (explicitly_enable_column(colopts))
die(_("--column and --verbose are incompatible"));
colopts = 0;
}
if (force) {
delete *= 2;
rename *= 2;
}
if (delete) {
if (!argc)
die(_("branch name required"));
return delete_branches(argc, argv, delete > 1, filter.kind, quiet);
} else if (list) {
/* git branch --local also shows HEAD when it is detached */
if ((filter.kind & FILTER_REFS_BRANCHES) && filter.detached)
filter.kind |= FILTER_REFS_DETACHED_HEAD;
filter.name_patterns = argv;
/*
* If no sorting parameter is given then we default to sorting
* by 'refname'. This would give us an alphabetically sorted
* array with the 'HEAD' ref at the beginning followed by
* local branches 'refs/heads/...' and finally remote-tacking
* branches 'refs/remotes/...'.
*/
if (!sorting)
sorting = ref_default_sorting();
sorting->ignore_case = icase;
print_ref_list(&filter, sorting, format);
print_columns(&output, colopts, NULL);
string_list_clear(&output, 0);
return 0;
}
else if (edit_description) {
const char *branch_name;
struct strbuf branch_ref = STRBUF_INIT;
if (!argc) {
if (filter.detached)
die(_("Cannot give description to detached HEAD"));
branch_name = head;
} else if (argc == 1)
branch_name = argv[0];
else
die(_("cannot edit description of more than one branch"));
strbuf_addf(&branch_ref, "refs/heads/%s", branch_name);
if (!ref_exists(branch_ref.buf)) {
strbuf_release(&branch_ref);
if (!argc)
return error(_("No commit on branch '%s' yet."),
branch_name);
else
return error(_("No branch named '%s'."),
branch_name);
}
strbuf_release(&branch_ref);
if (edit_branch_description(branch_name))
return 1;
} else if (rename) {
if (!argc)
die(_("branch name required"));
else if (argc == 1)
rename_branch(head, argv[0], rename > 1);
else if (argc == 2)
rename_branch(argv[0], argv[1], rename > 1);
else
die(_("too many branches for a rename operation"));
} else if (new_upstream) {
struct branch *branch = branch_get(argv[0]);
if (argc > 1)
die(_("too many branches to set new upstream"));
if (!branch) {
if (!argc || !strcmp(argv[0], "HEAD"))
die(_("could not set upstream of HEAD to %s when "
"it does not point to any branch."),
new_upstream);
die(_("no such branch '%s'"), argv[0]);
}
if (!ref_exists(branch->refname))
die(_("branch '%s' does not exist"), branch->name);
/*
* create_branch takes care of setting up the tracking
* info and making sure new_upstream is correct
*/
create_branch(branch->name, new_upstream, 0, 0, 0, quiet, BRANCH_TRACK_OVERRIDE);
} else if (unset_upstream) {
struct branch *branch = branch_get(argv[0]);
struct strbuf buf = STRBUF_INIT;
if (argc > 1)
die(_("too many branches to unset upstream"));
if (!branch) {
if (!argc || !strcmp(argv[0], "HEAD"))
die(_("could not unset upstream of HEAD when "
"it does not point to any branch."));
die(_("no such branch '%s'"), argv[0]);
}
if (!branch_has_merge_config(branch))
die(_("Branch '%s' has no upstream information"), branch->name);
strbuf_addf(&buf, "branch.%s.remote", branch->name);
git_config_set_multivar(buf.buf, NULL, NULL, 1);
strbuf_reset(&buf);
strbuf_addf(&buf, "branch.%s.merge", branch->name);
git_config_set_multivar(buf.buf, NULL, NULL, 1);
strbuf_release(&buf);
} else if (argc > 0 && argc <= 2) {
struct branch *branch = branch_get(argv[0]);
int branch_existed = 0, remote_tracking = 0;
struct strbuf buf = STRBUF_INIT;
if (!strcmp(argv[0], "HEAD"))
die(_("it does not make sense to create 'HEAD' manually"));
if (!branch)
die(_("no such branch '%s'"), argv[0]);
if (filter.kind != FILTER_REFS_BRANCHES)
die(_("-a and -r options to 'git branch' do not make sense with a branch name"));
if (track == BRANCH_TRACK_OVERRIDE)
fprintf(stderr, _("The --set-upstream flag is deprecated and will be removed. Consider using --track or --set-upstream-to\n"));
strbuf_addf(&buf, "refs/remotes/%s", branch->name);
remote_tracking = ref_exists(buf.buf);
strbuf_release(&buf);
branch_existed = ref_exists(branch->refname);
create_branch(argv[0], (argc == 2) ? argv[1] : head,
force, reflog, 0, quiet, track);
/*
* We only show the instructions if the user gave us
* one branch which doesn't exist locally, but is the
* name of a remote-tracking branch.
*/
if (argc == 1 && track == BRANCH_TRACK_OVERRIDE &&
!branch_existed && remote_tracking) {
fprintf(stderr, _("\nIf you wanted to make '%s' track '%s', do this:\n\n"), head, branch->name);
fprintf(stderr, " git branch -d %s\n", branch->name);
fprintf(stderr, " git branch --set-upstream-to %s\n", branch->name);
}
} else
usage_with_options(builtin_branch_usage, options);
return 0;
}