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rebase: teach reset_head() to optionally skip the worktree

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This is what the legacy (scripted) rebase does in
`move_to_original_branch`, and we will need this functionality in the
next commit.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2019-01-18 07:09:26 -08:00 committed by Junio C Hamano
parent 5b2237a876
commit 414f336069
1 changed files with 7 additions and 1 deletions
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8
builtin/rebase.c
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@ -337,6 +337,7 @@ static void add_var(struct strbuf *buf, const char *name, const char *value)
#define RESET_HEAD_DETACH (1<<0)
#define RESET_HEAD_HARD (1<<1)
#define RESET_HEAD_REFS_ONLY (1<<2)
static int reset_head(struct object_id *oid, const char *action,
const char *switch_to_branch, unsigned flags,
@ -344,6 +345,7 @@ static int reset_head(struct object_id *oid, const char *action,
{
unsigned detach_head = flags & RESET_HEAD_DETACH;
unsigned reset_hard = flags & RESET_HEAD_HARD;
unsigned refs_only = flags & RESET_HEAD_REFS_ONLY;
struct object_id head_oid;
struct tree_desc desc[2] = { { NULL }, { NULL } };
struct lock_file lock = LOCK_INIT;
@ -359,7 +361,7 @@ static int reset_head(struct object_id *oid, const char *action,
if (switch_to_branch && !starts_with(switch_to_branch, "refs/"))
BUG("Not a fully qualified branch: '%s'", switch_to_branch);
if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) {
if (!refs_only && hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) {
ret = -1;
goto leave_reset_head;
}
@ -372,6 +374,9 @@ static int reset_head(struct object_id *oid, const char *action,
if (!oid)
oid = &head_oid;
if (refs_only)
goto reset_head_refs;
memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
setup_unpack_trees_porcelain(&unpack_tree_opts, action);
unpack_tree_opts.head_idx = 1;
@ -412,6 +417,7 @@ static int reset_head(struct object_id *oid, const char *action,
goto leave_reset_head;
}
reset_head_refs:
reflog_action = getenv(GIT_REFLOG_ACTION_ENVIRONMENT);
strbuf_addf(&msg, "%s: ", reflog_action ? reflog_action : "rebase");
prefix_len = msg.len;