worktree: add: auto-vivify new branch when <branch> is omitted

diff --git a/builtin/commit.c b/builtin/commit.c
index b0fe7847d3cbebd2cef28611171924bf7440c467..3f02686800a3c964d40d1cdb22608c38d62039a9 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -6,6 +6,7 @@
  */
 
 #include "cache.h"
+#include "lockfile.h"
 #include "cache-tree.h"
 #include "color.h"
 #include "dir.h"
@@ -169,7 +170,7 @@ static void determine_whence(struct wt_status *s)
                whence = FROM_MERGE;
        else if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
                whence = FROM_CHERRY_PICK;
-               if (file_exists(git_path("sequencer")))
+               if (file_exists(git_path(SEQ_DIR)))
                        sequencer_in_use = 1;
        }
        else
@@ -315,8 +316,8 @@ static void refresh_cache_or_die(int refresh_flags)
                die_resolve_conflict("commit");
 }
 
-static char *prepare_index(int argc, const char **argv, const char *prefix,
-                          const struct commit *current_head, int is_status)
+static const char *prepare_index(int argc, const char **argv, const char *prefix,
+                                const struct commit *current_head, int is_status)
 {
        struct string_list partial;
        struct pathspec pathspec;
@@ -341,7 +342,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
                        die(_("unable to create temporary index"));
 
                old_index_env = getenv(INDEX_ENVIRONMENT);
-               setenv(INDEX_ENVIRONMENT, index_lock.filename, 1);
+               setenv(INDEX_ENVIRONMENT, index_lock.filename.buf, 1);
 
                if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
                        die(_("interactive add failed"));
@@ -352,7 +353,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
                        unsetenv(INDEX_ENVIRONMENT);
 
                discard_cache();
-               read_cache_from(index_lock.filename);
+               read_cache_from(index_lock.filename.buf);
                if (update_main_cache_tree(WRITE_TREE_SILENT) == 0) {
                        if (reopen_lock_file(&index_lock) < 0)
                                die(_("unable to write index file"));
@@ -362,7 +363,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
                        warning(_("Failed to update main cache tree"));
 
                commit_style = COMMIT_NORMAL;
-               return index_lock.filename;
+               return index_lock.filename.buf;
        }
 
        /*
@@ -385,7 +386,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
                if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
                        die(_("unable to write new_index file"));
                commit_style = COMMIT_NORMAL;
-               return index_lock.filename;
+               return index_lock.filename.buf;
        }
 
        /*
@@ -472,9 +473,9 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
                die(_("unable to write temporary index file"));
 
        discard_cache();
-       read_cache_from(false_lock.filename);
+       read_cache_from(false_lock.filename.buf);
 
-       return false_lock.filename;
+       return false_lock.filename.buf;
 }
 
 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
@@ -1271,22 +1272,21 @@ static int dry_run_commit(int argc, const char **argv, const char *prefix,
        return commitable ? 0 : 1;
 }
 
-static int parse_status_slot(const char *var, int offset)
+static int parse_status_slot(const char *slot)
 {
-       if (!strcasecmp(var+offset, "header"))
+       if (!strcasecmp(slot, "header"))
                return WT_STATUS_HEADER;
-       if (!strcasecmp(var+offset, "branch"))
+       if (!strcasecmp(slot, "branch"))
                return WT_STATUS_ONBRANCH;
-       if (!strcasecmp(var+offset, "updated")
-               || !strcasecmp(var+offset, "added"))
+       if (!strcasecmp(slot, "updated") || !strcasecmp(slot, "added"))
                return WT_STATUS_UPDATED;
-       if (!strcasecmp(var+offset, "changed"))
+       if (!strcasecmp(slot, "changed"))
                return WT_STATUS_CHANGED;
-       if (!strcasecmp(var+offset, "untracked"))
+       if (!strcasecmp(slot, "untracked"))
                return WT_STATUS_UNTRACKED;
-       if (!strcasecmp(var+offset, "nobranch"))
+       if (!strcasecmp(slot, "nobranch"))
                return WT_STATUS_NOBRANCH;
-       if (!strcasecmp(var+offset, "unmerged"))
+       if (!strcasecmp(slot, "unmerged"))
                return WT_STATUS_UNMERGED;
        return -1;
 }
@@ -1294,6 +1294,7 @@ static int parse_status_slot(const char *var, int offset)
 static int git_status_config(const char *k, const char *v, void *cb)
 {
        struct wt_status *s = cb;
+       const char *slot_name;
 
        if (starts_with(k, "column."))
                return git_column_config(k, v, "status", &s->colopts);
@@ -1323,14 +1324,14 @@ static int git_status_config(const char *k, const char *v, void *cb)
                s->display_comment_prefix = git_config_bool(k, v);
                return 0;
        }
-       if (starts_with(k, "status.color.") || starts_with(k, "color.status.")) {
-               int slot = parse_status_slot(k, 13);
+       if (skip_prefix(k, "status.color.", &slot_name) ||
+           skip_prefix(k, "color.status.", &slot_name)) {
+               int slot = parse_status_slot(slot_name);
                if (slot < 0)
                        return 0;
                if (!v)
                        return config_error_nonbool(k);
-               color_parse(v, k, s->color_palette[slot]);
-               return 0;
+               return color_parse(v, s->color_palette[slot]);
        }
        if (!strcmp(k, "status.relativepaths")) {
                s->relative_paths = git_config_bool(k, v);
@@ -1512,14 +1513,12 @@ static void print_summary(const char *prefix, const unsigned char *sha1,
        rev.diffopt.break_opt = 0;
        diff_setup_done(&rev.diffopt);
 
-       head = resolve_ref_unsafe("HEAD", junk_sha1, 0, NULL);
-       printf("[%s%s ",
-               starts_with(head, "refs/heads/") ?
-                       head + 11 :
-                       !strcmp(head, "HEAD") ?
-                               _("detached HEAD") :
-                               head,
-               initial_commit ? _(" (root-commit)") : "");
+       head = resolve_ref_unsafe("HEAD", 0, junk_sha1, NULL);
+       if (!strcmp(head, "HEAD"))
+               head = _("detached HEAD");
+       else
+               skip_prefix(head, "refs/heads/", &head);
+       printf("[%s%s ", head, initial_commit ? _(" (root-commit)") : "");
 
        if (!log_tree_commit(&rev, commit)) {
                rev.always_show_header = 1;
@@ -1810,8 +1809,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
            ref_transaction_update(transaction, "HEAD", sha1,
                                   current_head
                                   ? current_head->object.sha1 : NULL,
-                                  0, !!current_head, &err) ||
-           ref_transaction_commit(transaction, sb.buf, &err)) {
+                                  0, !!current_head, sb.buf, &err) ||
+           ref_transaction_commit(transaction, &err)) {
                rollback_index_files();
                die("%s", err.buf);
        }