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Commit | Line | Data |
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303d1d0b | 1 | #include "git-compat-util.h" |
e496c003 | 2 | #include "cache.h" |
b2141fc1 | 3 | #include "config.h" |
e496c003 DB |
4 | #include "branch.h" |
5 | #include "refs.h" | |
ec0cb496 | 6 | #include "refspec.h" |
e496c003 | 7 | #include "remote.h" |
b07d9bfd | 8 | #include "sequencer.h" |
e496c003 | 9 | #include "commit.h" |
ac6c561b | 10 | #include "worktree.h" |
e496c003 DB |
11 | |
12 | struct tracking { | |
0ad4a5ff | 13 | struct refspec_item spec; |
d3115660 | 14 | struct string_list *srcs; |
e496c003 DB |
15 | const char *remote; |
16 | int matches; | |
17 | }; | |
18 | ||
19 | static int find_tracked_branch(struct remote *remote, void *priv) | |
20 | { | |
21 | struct tracking *tracking = priv; | |
22 | ||
23 | if (!remote_find_tracking(remote, &tracking->spec)) { | |
24 | if (++tracking->matches == 1) { | |
d3115660 | 25 | string_list_append(tracking->srcs, tracking->spec.src); |
e496c003 DB |
26 | tracking->remote = remote->name; |
27 | } else { | |
28 | free(tracking->spec.src); | |
d3115660 | 29 | string_list_clear(tracking->srcs, 0); |
e496c003 DB |
30 | } |
31 | tracking->spec.src = NULL; | |
32 | } | |
33 | ||
34 | return 0; | |
35 | } | |
36 | ||
a9f2c136 | 37 | static int should_setup_rebase(const char *origin) |
c998ae9b DS |
38 | { |
39 | switch (autorebase) { | |
40 | case AUTOREBASE_NEVER: | |
41 | return 0; | |
42 | case AUTOREBASE_LOCAL: | |
a9f2c136 | 43 | return origin == NULL; |
c998ae9b | 44 | case AUTOREBASE_REMOTE: |
a9f2c136 | 45 | return origin != NULL; |
c998ae9b DS |
46 | case AUTOREBASE_ALWAYS: |
47 | return 1; | |
48 | } | |
49 | return 0; | |
50 | } | |
51 | ||
a3f40ec4 JS |
52 | /** |
53 | * Install upstream tracking configuration for a branch; specifically, add | |
54 | * `branch.<name>.remote` and `branch.<name>.merge` entries. | |
55 | * | |
56 | * `flag` contains integer flags for options; currently only | |
57 | * BRANCH_CONFIG_VERBOSE is checked. | |
58 | * | |
59 | * `local` is the name of the branch whose configuration we're installing. | |
60 | * | |
61 | * `origin` is the name of the remote owning the upstream branches. NULL means | |
62 | * the upstream branches are local to this repo. | |
63 | * | |
64 | * `remotes` is a list of refs that are upstream of local | |
65 | */ | |
66 | static int install_branch_config_multiple_remotes(int flag, const char *local, | |
67 | const char *origin, struct string_list *remotes) | |
a9f2c136 | 68 | { |
cf4fff57 | 69 | const char *shortname = NULL; |
a9f2c136 | 70 | struct strbuf key = STRBUF_INIT; |
a3f40ec4 | 71 | struct string_list_item *item; |
a9f2c136 JH |
72 | int rebasing = should_setup_rebase(origin); |
73 | ||
a3f40ec4 JS |
74 | if (!remotes->nr) |
75 | BUG("must provide at least one remote for branch config"); | |
76 | if (rebasing && remotes->nr > 1) | |
77 | die(_("cannot inherit upstream tracking configuration of " | |
78 | "multiple refs when rebasing is requested")); | |
79 | ||
80 | /* | |
81 | * If the new branch is trying to track itself, something has gone | |
82 | * wrong. Warn the user and don't proceed any further. | |
83 | */ | |
84 | if (!origin) | |
85 | for_each_string_list_item(item, remotes) | |
86 | if (skip_prefix(item->string, "refs/heads/", &shortname) | |
87 | && !strcmp(local, shortname)) { | |
0669bdf4 | 88 | warning(_("not setting branch '%s' as its own upstream"), |
a3f40ec4 JS |
89 | local); |
90 | return 0; | |
91 | } | |
85e2233f | 92 | |
a9f2c136 | 93 | strbuf_addf(&key, "branch.%s.remote", local); |
30598ad0 | 94 | if (git_config_set_gently(key.buf, origin ? origin : ".") < 0) |
27852b2c | 95 | goto out_err; |
a9f2c136 JH |
96 | |
97 | strbuf_reset(&key); | |
98 | strbuf_addf(&key, "branch.%s.merge", local); | |
a3f40ec4 JS |
99 | /* |
100 | * We want to overwrite any existing config with all the branches in | |
101 | * "remotes". Override any existing config, then write our branches. If | |
102 | * more than one is provided, use CONFIG_REGEX_NONE to preserve what | |
103 | * we've written so far. | |
104 | */ | |
105 | if (git_config_set_gently(key.buf, NULL) < 0) | |
27852b2c | 106 | goto out_err; |
a3f40ec4 JS |
107 | for_each_string_list_item(item, remotes) |
108 | if (git_config_set_multivar_gently(key.buf, item->string, CONFIG_REGEX_NONE, 0) < 0) | |
109 | goto out_err; | |
a9f2c136 JH |
110 | |
111 | if (rebasing) { | |
112 | strbuf_reset(&key); | |
113 | strbuf_addf(&key, "branch.%s.rebase", local); | |
30598ad0 | 114 | if (git_config_set_gently(key.buf, "true") < 0) |
27852b2c | 115 | goto out_err; |
a9f2c136 | 116 | } |
d53a3503 | 117 | strbuf_release(&key); |
a9f2c136 | 118 | |
72f60083 | 119 | if (flag & BRANCH_CONFIG_VERBOSE) { |
a3f40ec4 JS |
120 | struct strbuf tmp_ref_name = STRBUF_INIT; |
121 | struct string_list friendly_ref_names = STRING_LIST_INIT_DUP; | |
122 | ||
123 | for_each_string_list_item(item, remotes) { | |
124 | shortname = item->string; | |
125 | skip_prefix(shortname, "refs/heads/", &shortname); | |
126 | if (origin) { | |
127 | strbuf_addf(&tmp_ref_name, "%s/%s", | |
128 | origin, shortname); | |
129 | string_list_append_nodup( | |
130 | &friendly_ref_names, | |
131 | strbuf_detach(&tmp_ref_name, NULL)); | |
132 | } else { | |
133 | string_list_append( | |
134 | &friendly_ref_names, shortname); | |
135 | } | |
136 | } | |
137 | ||
138 | if (remotes->nr == 1) { | |
139 | /* | |
140 | * Rebasing is only allowed in the case of a single | |
141 | * upstream branch. | |
142 | */ | |
143 | printf_ln(rebasing ? | |
144 | _("branch '%s' set up to track '%s' by rebasing.") : | |
145 | _("branch '%s' set up to track '%s'."), | |
146 | local, friendly_ref_names.items[0].string); | |
9fe0cf3a | 147 | } else { |
a3f40ec4 JS |
148 | printf_ln(_("branch '%s' set up to track:"), local); |
149 | for_each_string_list_item(item, &friendly_ref_names) | |
150 | printf_ln(" %s", item->string); | |
9fe0cf3a | 151 | } |
a3f40ec4 JS |
152 | |
153 | string_list_clear(&friendly_ref_names, 0); | |
72f60083 | 154 | } |
27852b2c PS |
155 | |
156 | return 0; | |
157 | ||
158 | out_err: | |
159 | strbuf_release(&key); | |
7435e7e2 | 160 | error(_("unable to write upstream branch configuration")); |
27852b2c | 161 | |
a3f40ec4 JS |
162 | advise(_("\nAfter fixing the error cause you may try to fix up\n" |
163 | "the remote tracking information by invoking:")); | |
164 | if (remotes->nr == 1) | |
165 | advise(" git branch --set-upstream-to=%s%s%s", | |
166 | origin ? origin : "", | |
167 | origin ? "/" : "", | |
168 | remotes->items[0].string); | |
169 | else { | |
170 | advise(" git config --add branch.\"%s\".remote %s", | |
171 | local, origin ? origin : "."); | |
172 | for_each_string_list_item(item, remotes) | |
173 | advise(" git config --add branch.\"%s\".merge %s", | |
174 | local, item->string); | |
175 | } | |
27852b2c PS |
176 | |
177 | return -1; | |
a9f2c136 JH |
178 | } |
179 | ||
a3f40ec4 JS |
180 | int install_branch_config(int flag, const char *local, const char *origin, |
181 | const char *remote) | |
182 | { | |
183 | int ret; | |
184 | struct string_list remotes = STRING_LIST_INIT_DUP; | |
185 | ||
186 | string_list_append(&remotes, remote); | |
187 | ret = install_branch_config_multiple_remotes(flag, local, origin, &remotes); | |
188 | string_list_clear(&remotes, 0); | |
189 | return ret; | |
190 | } | |
191 | ||
d3115660 JS |
192 | static int inherit_tracking(struct tracking *tracking, const char *orig_ref) |
193 | { | |
194 | const char *bare_ref; | |
195 | struct branch *branch; | |
196 | int i; | |
197 | ||
198 | bare_ref = orig_ref; | |
199 | skip_prefix(orig_ref, "refs/heads/", &bare_ref); | |
200 | ||
201 | branch = branch_get(bare_ref); | |
202 | if (!branch->remote_name) { | |
203 | warning(_("asked to inherit tracking from '%s', but no remote is set"), | |
204 | bare_ref); | |
205 | return -1; | |
206 | } | |
207 | ||
208 | if (branch->merge_nr < 1 || !branch->merge_name || !branch->merge_name[0]) { | |
209 | warning(_("asked to inherit tracking from '%s', but no merge configuration is set"), | |
210 | bare_ref); | |
211 | return -1; | |
212 | } | |
213 | ||
214 | tracking->remote = xstrdup(branch->remote_name); | |
215 | for (i = 0; i < branch->merge_nr; i++) | |
216 | string_list_append(tracking->srcs, branch->merge_name[i]); | |
217 | return 0; | |
218 | } | |
219 | ||
e496c003 DB |
220 | /* |
221 | * This is called when new_ref is branched off of orig_ref, and tries | |
222 | * to infer the settings for branch.<new_ref>.{remote,merge} from the | |
223 | * config. | |
224 | */ | |
27852b2c PS |
225 | static void setup_tracking(const char *new_ref, const char *orig_ref, |
226 | enum branch_track track, int quiet) | |
e496c003 | 227 | { |
e496c003 | 228 | struct tracking tracking; |
d3115660 | 229 | struct string_list tracking_srcs = STRING_LIST_INIT_DUP; |
f9a482e6 | 230 | int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE; |
e496c003 | 231 | |
e496c003 DB |
232 | memset(&tracking, 0, sizeof(tracking)); |
233 | tracking.spec.dst = (char *)orig_ref; | |
d3115660 JS |
234 | tracking.srcs = &tracking_srcs; |
235 | if (track != BRANCH_TRACK_INHERIT) | |
236 | for_each_remote(find_tracked_branch, &tracking); | |
237 | else if (inherit_tracking(&tracking, orig_ref)) | |
27852b2c | 238 | return; |
e496c003 | 239 | |
9ed36cfa JS |
240 | if (!tracking.matches) |
241 | switch (track) { | |
242 | case BRANCH_TRACK_ALWAYS: | |
243 | case BRANCH_TRACK_EXPLICIT: | |
4fc50066 | 244 | case BRANCH_TRACK_OVERRIDE: |
d3115660 | 245 | case BRANCH_TRACK_INHERIT: |
9ed36cfa JS |
246 | break; |
247 | default: | |
27852b2c | 248 | return; |
9ed36cfa JS |
249 | } |
250 | ||
e496c003 | 251 | if (tracking.matches > 1) |
7435e7e2 | 252 | die(_("not tracking: ambiguous information for ref %s"), |
27852b2c | 253 | orig_ref); |
e496c003 | 254 | |
d3115660 JS |
255 | if (tracking.srcs->nr < 1) |
256 | string_list_append(tracking.srcs, orig_ref); | |
257 | if (install_branch_config_multiple_remotes(config_flags, new_ref, | |
258 | tracking.remote, tracking.srcs) < 0) | |
27852b2c | 259 | exit(-1); |
e496c003 | 260 | |
d3115660 | 261 | string_list_clear(tracking.srcs, 0); |
e496c003 DB |
262 | } |
263 | ||
6f9a3321 JH |
264 | int read_branch_desc(struct strbuf *buf, const char *branch_name) |
265 | { | |
540b0f49 | 266 | char *v = NULL; |
6f9a3321 JH |
267 | struct strbuf name = STRBUF_INIT; |
268 | strbuf_addf(&name, "branch.%s.description", branch_name); | |
540b0f49 TA |
269 | if (git_config_get_string(name.buf, &v)) { |
270 | strbuf_release(&name); | |
271 | return -1; | |
272 | } | |
273 | strbuf_addstr(buf, v); | |
274 | free(v); | |
6f9a3321 JH |
275 | strbuf_release(&name); |
276 | return 0; | |
277 | } | |
278 | ||
bc1c9c0e JH |
279 | /* |
280 | * Check if 'name' can be a valid name for a branch; die otherwise. | |
281 | * Return 1 if the named branch already exists; return 0 otherwise. | |
282 | * Fill ref with the full refname for the branch. | |
283 | */ | |
284 | int validate_branchname(const char *name, struct strbuf *ref) | |
55c4a673 | 285 | { |
55c4a673 | 286 | if (strbuf_check_branch_ref(ref, name)) |
7435e7e2 | 287 | die(_("'%s' is not a valid branch name"), name); |
55c4a673 | 288 | |
bc1c9c0e JH |
289 | return ref_exists(ref->buf); |
290 | } | |
55c4a673 | 291 | |
bc1c9c0e JH |
292 | /* |
293 | * Check if a branch 'name' can be created as a new branch; die otherwise. | |
294 | * 'force' can be used when it is OK for the named branch already exists. | |
295 | * Return 1 if the named branch already exists; return 0 otherwise. | |
296 | * Fill ref with the full refname for the branch. | |
297 | */ | |
298 | int validate_new_branchname(const char *name, struct strbuf *ref, int force) | |
299 | { | |
593a2a5d AK |
300 | struct worktree **worktrees; |
301 | const struct worktree *wt; | |
bc1c9c0e JH |
302 | |
303 | if (!validate_branchname(name, ref)) | |
55c4a673 | 304 | return 0; |
55c4a673 | 305 | |
8280c4c1 | 306 | if (!force) |
7435e7e2 | 307 | die(_("a branch named '%s' already exists"), |
8280c4c1 JH |
308 | ref->buf + strlen("refs/heads/")); |
309 | ||
593a2a5d AK |
310 | worktrees = get_worktrees(); |
311 | wt = find_shared_symref(worktrees, "HEAD", ref->buf); | |
312 | if (wt && !wt->is_bare) | |
68d924e1 | 313 | die(_("cannot force update the branch '%s' " |
593a2a5d AK |
314 | "checked out at '%s'"), |
315 | ref->buf + strlen("refs/heads/"), wt->path); | |
316 | free_worktrees(worktrees); | |
55c4a673 CI |
317 | |
318 | return 1; | |
319 | } | |
320 | ||
41c21f22 JH |
321 | static int check_tracking_branch(struct remote *remote, void *cb_data) |
322 | { | |
323 | char *tracking_branch = cb_data; | |
0ad4a5ff BW |
324 | struct refspec_item query; |
325 | memset(&query, 0, sizeof(struct refspec_item)); | |
41c21f22 | 326 | query.dst = tracking_branch; |
1d7358c5 | 327 | return !remote_find_tracking(remote, &query); |
41c21f22 JH |
328 | } |
329 | ||
330 | static int validate_remote_tracking_branch(char *ref) | |
331 | { | |
332 | return !for_each_remote(check_tracking_branch, ref); | |
333 | } | |
334 | ||
e2b6aa5f | 335 | static const char upstream_not_branch[] = |
7435e7e2 | 336 | N_("cannot set up tracking information; starting point '%s' is not a branch"); |
a5e91c72 | 337 | static const char upstream_missing[] = |
caa2036b JK |
338 | N_("the requested upstream branch '%s' does not exist"); |
339 | static const char upstream_advice[] = | |
340 | N_("\n" | |
341 | "If you are planning on basing your work on an upstream\n" | |
342 | "branch that already exists at the remote, you may need to\n" | |
343 | "run \"git fetch\" to retrieve it.\n" | |
344 | "\n" | |
345 | "If you are planning to push out a new local branch that\n" | |
346 | "will track its remote counterpart, you may want to use\n" | |
347 | "\"git push -u\" to set the upstream config as you push."); | |
e2b6aa5f | 348 | |
4edce172 NTND |
349 | void create_branch(struct repository *r, |
350 | const char *name, const char *start_name, | |
e2bbd0cc | 351 | int force, int clobber_head_ok, int reflog, |
f9a482e6 | 352 | int quiet, enum branch_track track) |
e496c003 | 353 | { |
e496c003 | 354 | struct commit *commit; |
48713bfa | 355 | struct object_id oid; |
3818b258 | 356 | char *real_ref; |
8415d5c7 | 357 | struct strbuf ref = STRBUF_INIT; |
e496c003 | 358 | int forcing = 0; |
4fc50066 IL |
359 | int dont_change_ref = 0; |
360 | int explicit_tracking = 0; | |
361 | ||
362 | if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE) | |
363 | explicit_tracking = 1; | |
e496c003 | 364 | |
0faff988 | 365 | if ((track == BRANCH_TRACK_OVERRIDE || clobber_head_ok) |
bc1c9c0e JH |
366 | ? validate_branchname(name, &ref) |
367 | : validate_new_branchname(name, &ref, force)) { | |
55c4a673 | 368 | if (!force) |
4fc50066 | 369 | dont_change_ref = 1; |
55c4a673 CI |
370 | else |
371 | forcing = 1; | |
e496c003 DB |
372 | } |
373 | ||
374 | real_ref = NULL; | |
e3d6539d | 375 | if (get_oid_mb(start_name, &oid)) { |
caa2036b | 376 | if (explicit_tracking) { |
ed9bff08 | 377 | if (advice_enabled(ADVICE_SET_UPSTREAM_FAILURE)) { |
caa2036b JK |
378 | error(_(upstream_missing), start_name); |
379 | advise(_(upstream_advice)); | |
380 | exit(1); | |
381 | } | |
1a15d00b | 382 | die(_(upstream_missing), start_name); |
caa2036b | 383 | } |
7435e7e2 | 384 | die(_("not a valid object name: '%s'"), start_name); |
a5e91c72 | 385 | } |
e496c003 | 386 | |
f24c30e0 | 387 | switch (dwim_ref(start_name, strlen(start_name), &oid, &real_ref, 0)) { |
e496c003 DB |
388 | case 0: |
389 | /* Not branching from any existing branch */ | |
4fc50066 | 390 | if (explicit_tracking) |
1a15d00b | 391 | die(_(upstream_not_branch), start_name); |
e496c003 DB |
392 | break; |
393 | case 1: | |
21b5b1e8 | 394 | /* Unique completion -- good, only if it is a real branch */ |
59556548 | 395 | if (!starts_with(real_ref, "refs/heads/") && |
41c21f22 | 396 | validate_remote_tracking_branch(real_ref)) { |
21b5b1e8 | 397 | if (explicit_tracking) |
1a15d00b | 398 | die(_(upstream_not_branch), start_name); |
21b5b1e8 | 399 | else |
d895804b | 400 | FREE_AND_NULL(real_ref); |
21b5b1e8 | 401 | } |
e496c003 DB |
402 | break; |
403 | default: | |
7435e7e2 | 404 | die(_("ambiguous object name: '%s'"), start_name); |
e496c003 DB |
405 | break; |
406 | } | |
407 | ||
4edce172 | 408 | if ((commit = lookup_commit_reference(r, &oid)) == NULL) |
7435e7e2 | 409 | die(_("not a valid branch point: '%s'"), start_name); |
48713bfa | 410 | oidcpy(&oid, &commit->object.oid); |
e496c003 | 411 | |
d43f990f | 412 | if (reflog) |
341fb286 | 413 | log_all_ref_updates = LOG_REFS_NORMAL; |
d43f990f RS |
414 | |
415 | if (!dont_change_ref) { | |
416 | struct ref_transaction *transaction; | |
417 | struct strbuf err = STRBUF_INIT; | |
cddac452 | 418 | char *msg; |
3818b258 JK |
419 | |
420 | if (forcing) | |
cddac452 | 421 | msg = xstrfmt("branch: Reset to %s", start_name); |
3818b258 | 422 | else |
cddac452 | 423 | msg = xstrfmt("branch: Created from %s", start_name); |
d43f990f RS |
424 | |
425 | transaction = ref_transaction_begin(&err); | |
426 | if (!transaction || | |
1d147bdf | 427 | ref_transaction_update(transaction, ref.buf, |
14228447 | 428 | &oid, forcing ? NULL : null_oid(), |
1d147bdf | 429 | 0, msg, &err) || |
db7516ab | 430 | ref_transaction_commit(transaction, &err)) |
d43f990f RS |
431 | die("%s", err.buf); |
432 | ref_transaction_free(transaction); | |
433 | strbuf_release(&err); | |
cddac452 | 434 | free(msg); |
d43f990f RS |
435 | } |
436 | ||
e496c003 | 437 | if (real_ref && track) |
82a0672f | 438 | setup_tracking(ref.buf + 11, real_ref, track, quiet); |
e496c003 | 439 | |
8415d5c7 | 440 | strbuf_release(&ref); |
9ed36cfa | 441 | free(real_ref); |
e496c003 | 442 | } |
c369e7b8 | 443 | |
b6433555 | 444 | void remove_merge_branch_state(struct repository *r) |
c369e7b8 | 445 | { |
4edce172 NTND |
446 | unlink(git_path_merge_head(r)); |
447 | unlink(git_path_merge_rr(r)); | |
448 | unlink(git_path_merge_msg(r)); | |
449 | unlink(git_path_merge_mode(r)); | |
5291828d | 450 | unlink(git_path_auto_merge(r)); |
a03b5553 | 451 | save_autostash(git_path_merge_autostash(r)); |
b6433555 NTND |
452 | } |
453 | ||
f496b064 | 454 | void remove_branch_state(struct repository *r, int verbose) |
b6433555 | 455 | { |
f496b064 | 456 | sequencer_post_commit_cleanup(r, verbose); |
4edce172 | 457 | unlink(git_path_squash_msg(r)); |
b6433555 | 458 | remove_merge_branch_state(r); |
c369e7b8 | 459 | } |
ed89f84b | 460 | |
8d9fdd70 | 461 | void die_if_checked_out(const char *branch, int ignore_current_worktree) |
41af6565 | 462 | { |
c8dd491f | 463 | struct worktree **worktrees = get_worktrees(); |
d3b9ac07 | 464 | const struct worktree *wt; |
41af6565 | 465 | |
c8dd491f AK |
466 | wt = find_shared_symref(worktrees, "HEAD", branch); |
467 | if (wt && (!ignore_current_worktree || !wt->is_current)) { | |
468 | skip_prefix(branch, "refs/heads/", &branch); | |
469 | die(_("'%s' is already checked out at '%s'"), branch, wt->path); | |
470 | } | |
471 | ||
472 | free_worktrees(worktrees); | |
ed89f84b | 473 | } |
70999e9c | 474 | |
39ee4c6c KM |
475 | int replace_each_worktree_head_symref(const char *oldref, const char *newref, |
476 | const char *logmsg) | |
70999e9c KY |
477 | { |
478 | int ret = 0; | |
03f2465b | 479 | struct worktree **worktrees = get_worktrees(); |
70999e9c KY |
480 | int i; |
481 | ||
482 | for (i = 0; worktrees[i]; i++) { | |
d026a256 NTND |
483 | struct ref_store *refs; |
484 | ||
70999e9c KY |
485 | if (worktrees[i]->is_detached) |
486 | continue; | |
31824d18 NTND |
487 | if (!worktrees[i]->head_ref) |
488 | continue; | |
489 | if (strcmp(oldref, worktrees[i]->head_ref)) | |
70999e9c KY |
490 | continue; |
491 | ||
d026a256 NTND |
492 | refs = get_worktree_ref_store(worktrees[i]); |
493 | if (refs_create_symref(refs, "HEAD", newref, logmsg)) | |
494 | ret = error(_("HEAD of working tree %s is not updated"), | |
495 | worktrees[i]->path); | |
70999e9c KY |
496 | } |
497 | ||
498 | free_worktrees(worktrees); | |
499 | return ret; | |
500 | } |