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Commit | Line | Data |
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782c2d65 | 1 | #include "builtin.h" |
b2141fc1 | 2 | #include "config.h" |
7c85a87c | 3 | #include "checkout.h" |
697cc8ef | 4 | #include "lockfile.h" |
782c2d65 DB |
5 | #include "parse-options.h" |
6 | #include "refs.h" | |
cbd53a21 | 7 | #include "object-store.h" |
782c2d65 DB |
8 | #include "commit.h" |
9 | #include "tree.h" | |
10 | #include "tree-walk.h" | |
b9d37a54 | 11 | #include "cache-tree.h" |
782c2d65 DB |
12 | #include "unpack-trees.h" |
13 | #include "dir.h" | |
14 | #include "run-command.h" | |
15 | #include "merge-recursive.h" | |
16 | #include "branch.h" | |
17 | #include "diff.h" | |
18 | #include "revision.h" | |
79a1e6b4 | 19 | #include "remote.h" |
0cf8581e JH |
20 | #include "blob.h" |
21 | #include "xdiff-interface.h" | |
22 | #include "ll-merge.h" | |
cfc5789a | 23 | #include "resolve-undo.h" |
851e18c3 | 24 | #include "submodule-config.h" |
175f6e59 | 25 | #include "submodule.h" |
ad8d5104 | 26 | #include "advice.h" |
782c2d65 | 27 | |
fa655d84 BP |
28 | static int checkout_optimize_new_branch; |
29 | ||
782c2d65 | 30 | static const char * const checkout_usage[] = { |
9c9b4f2f AH |
31 | N_("git checkout [<options>] <branch>"), |
32 | N_("git checkout [<options>] [<branch>] -- <file>..."), | |
782c2d65 DB |
33 | NULL, |
34 | }; | |
35 | ||
db941099 | 36 | struct checkout_opts { |
e51e3057 | 37 | int patch_mode; |
db941099 JH |
38 | int quiet; |
39 | int merge; | |
40 | int force; | |
32669671 | 41 | int force_detach; |
38901a48 | 42 | int writeout_stage; |
c1d7036b | 43 | int overwrite_ignore; |
08d595dc | 44 | int ignore_skipworktree; |
1d0fa898 | 45 | int ignore_other_worktrees; |
870ebdb9 | 46 | int show_progress; |
fa655d84 BP |
47 | /* |
48 | * If new checkout options are added, skip_merge_working_tree | |
49 | * should be updated accordingly. | |
50 | */ | |
db941099 JH |
51 | |
52 | const char *new_branch; | |
02ac9837 | 53 | const char *new_branch_force; |
9db5ebf4 | 54 | const char *new_orphan_branch; |
db941099 JH |
55 | int new_branch_log; |
56 | enum branch_track track; | |
175f6e59 | 57 | struct diff_options diff_options; |
e51e3057 NTND |
58 | |
59 | int branch_exists; | |
60 | const char *prefix; | |
817b345a | 61 | struct pathspec pathspec; |
e51e3057 | 62 | struct tree *source_tree; |
db941099 JH |
63 | }; |
64 | ||
c8a3ea1f | 65 | static int post_checkout_hook(struct commit *old_commit, struct commit *new_commit, |
782c2d65 DB |
66 | int changed) |
67 | { | |
15048f8a | 68 | return run_hook_le(NULL, "post-checkout", |
c8a3ea1f BW |
69 | oid_to_hex(old_commit ? &old_commit->object.oid : &null_oid), |
70 | oid_to_hex(new_commit ? &new_commit->object.oid : &null_oid), | |
15048f8a | 71 | changed ? "1" : "0", NULL); |
c8a3ea1f | 72 | /* "new_commit" can be NULL when checking out from the index before |
2292ce47 | 73 | a commit exists. */ |
ae98a008 | 74 | |
782c2d65 DB |
75 | } |
76 | ||
df46d77e | 77 | static int update_some(const struct object_id *oid, struct strbuf *base, |
671f0707 | 78 | const char *pathname, unsigned mode, int stage, void *context) |
782c2d65 DB |
79 | { |
80 | int len; | |
81 | struct cache_entry *ce; | |
c5326bd6 | 82 | int pos; |
782c2d65 | 83 | |
782c2d65 DB |
84 | if (S_ISDIR(mode)) |
85 | return READ_TREE_RECURSIVE; | |
86 | ||
6a0b0b6d | 87 | len = base->len + strlen(pathname); |
a849735b | 88 | ce = make_empty_cache_entry(&the_index, len); |
df46d77e | 89 | oidcpy(&ce->oid, oid); |
6a0b0b6d NTND |
90 | memcpy(ce->name, base->buf, base->len); |
91 | memcpy(ce->name + base->len, pathname, len - base->len); | |
b60e188c TG |
92 | ce->ce_flags = create_ce_flags(0) | CE_UPDATE; |
93 | ce->ce_namelen = len; | |
782c2d65 | 94 | ce->ce_mode = create_ce_mode(mode); |
c5326bd6 JK |
95 | |
96 | /* | |
97 | * If the entry is the same as the current index, we can leave the old | |
98 | * entry in place. Whether it is UPTODATE or not, checkout_entry will | |
99 | * do the right thing. | |
100 | */ | |
101 | pos = cache_name_pos(ce->name, ce->ce_namelen); | |
102 | if (pos >= 0) { | |
103 | struct cache_entry *old = active_cache[pos]; | |
104 | if (ce->ce_mode == old->ce_mode && | |
4a7e27e9 | 105 | oideq(&ce->oid, &old->oid)) { |
c5326bd6 | 106 | old->ce_flags |= CE_UPDATE; |
a849735b | 107 | discard_cache_entry(ce); |
c5326bd6 JK |
108 | return 0; |
109 | } | |
110 | } | |
111 | ||
782c2d65 DB |
112 | add_cache_entry(ce, ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE); |
113 | return 0; | |
114 | } | |
115 | ||
18e4f405 | 116 | static int read_tree_some(struct tree *tree, const struct pathspec *pathspec) |
782c2d65 | 117 | { |
18e4f405 | 118 | read_tree_recursive(tree, "", 0, 0, pathspec, update_some, NULL); |
782c2d65 | 119 | |
782c2d65 DB |
120 | /* update the index with the given tree's info |
121 | * for all args, expanding wildcards, and exit | |
122 | * with any non-zero return code. | |
123 | */ | |
124 | return 0; | |
125 | } | |
126 | ||
9c5e6c80 | 127 | static int skip_same_name(const struct cache_entry *ce, int pos) |
8fdcf312 JH |
128 | { |
129 | while (++pos < active_nr && | |
130 | !strcmp(active_cache[pos]->name, ce->name)) | |
131 | ; /* skip */ | |
132 | return pos; | |
133 | } | |
134 | ||
9c5e6c80 | 135 | static int check_stage(int stage, const struct cache_entry *ce, int pos) |
38901a48 JH |
136 | { |
137 | while (pos < active_nr && | |
138 | !strcmp(active_cache[pos]->name, ce->name)) { | |
139 | if (ce_stage(active_cache[pos]) == stage) | |
140 | return 0; | |
141 | pos++; | |
142 | } | |
9f97ab08 ÆAB |
143 | if (stage == 2) |
144 | return error(_("path '%s' does not have our version"), ce->name); | |
145 | else | |
146 | return error(_("path '%s' does not have their version"), ce->name); | |
38901a48 JH |
147 | } |
148 | ||
9c5e6c80 | 149 | static int check_stages(unsigned stages, const struct cache_entry *ce, int pos) |
0cf8581e | 150 | { |
fbbccd0a JH |
151 | unsigned seen = 0; |
152 | const char *name = ce->name; | |
153 | ||
154 | while (pos < active_nr) { | |
155 | ce = active_cache[pos]; | |
156 | if (strcmp(name, ce->name)) | |
157 | break; | |
158 | seen |= (1 << ce_stage(ce)); | |
159 | pos++; | |
160 | } | |
161 | if ((stages & seen) != stages) | |
162 | return error(_("path '%s' does not have all necessary versions"), | |
163 | name); | |
0cf8581e JH |
164 | return 0; |
165 | } | |
166 | ||
ce25e4c7 RS |
167 | static int checkout_stage(int stage, const struct cache_entry *ce, int pos, |
168 | const struct checkout *state) | |
38901a48 JH |
169 | { |
170 | while (pos < active_nr && | |
171 | !strcmp(active_cache[pos]->name, ce->name)) { | |
172 | if (ce_stage(active_cache[pos]) == stage) | |
173 | return checkout_entry(active_cache[pos], state, NULL); | |
174 | pos++; | |
175 | } | |
9f97ab08 ÆAB |
176 | if (stage == 2) |
177 | return error(_("path '%s' does not have our version"), ce->name); | |
178 | else | |
179 | return error(_("path '%s' does not have their version"), ce->name); | |
38901a48 | 180 | } |
8fdcf312 | 181 | |
ce25e4c7 | 182 | static int checkout_merged(int pos, const struct checkout *state) |
0cf8581e JH |
183 | { |
184 | struct cache_entry *ce = active_cache[pos]; | |
185 | const char *path = ce->name; | |
186 | mmfile_t ancestor, ours, theirs; | |
187 | int status; | |
60af7691 | 188 | struct object_id oid; |
0cf8581e | 189 | mmbuffer_t result_buf; |
60af7691 | 190 | struct object_id threeway[3]; |
335c6e40 | 191 | unsigned mode = 0; |
0cf8581e | 192 | |
fbbccd0a JH |
193 | memset(threeway, 0, sizeof(threeway)); |
194 | while (pos < active_nr) { | |
195 | int stage; | |
196 | stage = ce_stage(ce); | |
197 | if (!stage || strcmp(path, ce->name)) | |
198 | break; | |
60af7691 | 199 | oidcpy(&threeway[stage - 1], &ce->oid); |
fbbccd0a JH |
200 | if (stage == 2) |
201 | mode = create_ce_mode(ce->ce_mode); | |
202 | pos++; | |
203 | ce = active_cache[pos]; | |
204 | } | |
60af7691 | 205 | if (is_null_oid(&threeway[1]) || is_null_oid(&threeway[2])) |
fbbccd0a | 206 | return error(_("path '%s' does not have necessary versions"), path); |
0cf8581e | 207 | |
d449347d | 208 | read_mmblob(&ancestor, &threeway[0]); |
209 | read_mmblob(&ours, &threeway[1]); | |
210 | read_mmblob(&theirs, &threeway[2]); | |
0cf8581e | 211 | |
18b037a5 JN |
212 | /* |
213 | * NEEDSWORK: re-create conflicts from merges with | |
214 | * merge.renormalize set, too | |
215 | */ | |
f0531a29 | 216 | status = ll_merge(&result_buf, path, &ancestor, "base", |
712516bc | 217 | &ours, "ours", &theirs, "theirs", NULL); |
0cf8581e JH |
218 | free(ancestor.ptr); |
219 | free(ours.ptr); | |
220 | free(theirs.ptr); | |
221 | if (status < 0 || !result_buf.ptr) { | |
222 | free(result_buf.ptr); | |
e8a8a4d7 | 223 | return error(_("path '%s': cannot merge"), path); |
0cf8581e JH |
224 | } |
225 | ||
226 | /* | |
227 | * NEEDSWORK: | |
228 | * There is absolutely no reason to write this as a blob object | |
514e8039 JS |
229 | * and create a phony cache entry. This hack is primarily to get |
230 | * to the write_entry() machinery that massages the contents to | |
231 | * work-tree format and writes out which only allows it for a | |
232 | * cache entry. The code in write_entry() needs to be refactored | |
233 | * to allow us to feed a <buffer, size, mode> instead of a cache | |
234 | * entry. Such a refactoring would help merge_recursive as well | |
235 | * (it also writes the merge result to the object database even | |
236 | * when it may contain conflicts). | |
0cf8581e | 237 | */ |
a09c985e | 238 | if (write_object_file(result_buf.ptr, result_buf.size, blob_type, &oid)) |
e8a8a4d7 | 239 | die(_("Unable to add merge result for '%s'"), path); |
443a12f3 | 240 | free(result_buf.ptr); |
a849735b | 241 | ce = make_transient_cache_entry(mode, &oid, path, 2); |
048f2762 | 242 | if (!ce) |
e8a8a4d7 | 243 | die(_("make_cache_entry failed for path '%s'"), path); |
0cf8581e | 244 | status = checkout_entry(ce, state, NULL); |
a849735b | 245 | discard_cache_entry(ce); |
0cf8581e JH |
246 | return status; |
247 | } | |
8fdcf312 | 248 | |
b6312c27 NTND |
249 | static int checkout_paths(const struct checkout_opts *opts, |
250 | const char *revision) | |
782c2d65 DB |
251 | { |
252 | int pos; | |
68e3d629 | 253 | struct checkout state = CHECKOUT_INIT; |
782c2d65 | 254 | static char *ps_matched; |
60af7691 | 255 | struct object_id rev; |
782c2d65 | 256 | struct commit *head; |
d2b3691b | 257 | int errs = 0; |
837e34eb | 258 | struct lock_file lock_file = LOCK_INIT; |
b6312c27 NTND |
259 | |
260 | if (opts->track != BRANCH_TRACK_UNSPECIFIED) | |
261 | die(_("'%s' cannot be used with updating paths"), "--track"); | |
262 | ||
263 | if (opts->new_branch_log) | |
264 | die(_("'%s' cannot be used with updating paths"), "-l"); | |
265 | ||
266 | if (opts->force && opts->patch_mode) | |
267 | die(_("'%s' cannot be used with updating paths"), "-f"); | |
268 | ||
269 | if (opts->force_detach) | |
270 | die(_("'%s' cannot be used with updating paths"), "--detach"); | |
271 | ||
272 | if (opts->merge && opts->patch_mode) | |
273 | die(_("'%s' cannot be used with %s"), "--merge", "--patch"); | |
274 | ||
275 | if (opts->force && opts->merge) | |
276 | die(_("'%s' cannot be used with %s"), "-f", "-m"); | |
277 | ||
278 | if (opts->new_branch) | |
279 | die(_("Cannot update paths and switch to branch '%s' at the same time."), | |
280 | opts->new_branch); | |
281 | ||
282 | if (opts->patch_mode) | |
283 | return run_add_interactive(revision, "--patch=checkout", | |
480ca644 | 284 | &opts->pathspec); |
b6312c27 | 285 | |
837e34eb | 286 | hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); |
5ab2a2da | 287 | if (read_cache_preload(&opts->pathspec) < 0) |
e923a8ab | 288 | return error(_("index file corrupt")); |
75336878 | 289 | |
e51e3057 | 290 | if (opts->source_tree) |
18e4f405 | 291 | read_tree_some(opts->source_tree, &opts->pathspec); |
75336878 | 292 | |
8b54c234 | 293 | ps_matched = xcalloc(opts->pathspec.nr, 1); |
782c2d65 | 294 | |
e721c154 NTND |
295 | /* |
296 | * Make sure all pathspecs participated in locating the paths | |
297 | * to be checked out. | |
298 | */ | |
782c2d65 DB |
299 | for (pos = 0; pos < active_nr; pos++) { |
300 | struct cache_entry *ce = active_cache[pos]; | |
e721c154 | 301 | ce->ce_flags &= ~CE_MATCHED; |
08d595dc NTND |
302 | if (!opts->ignore_skipworktree && ce_skip_worktree(ce)) |
303 | continue; | |
e51e3057 | 304 | if (opts->source_tree && !(ce->ce_flags & CE_UPDATE)) |
e721c154 NTND |
305 | /* |
306 | * "git checkout tree-ish -- path", but this entry | |
307 | * is in the original index; it will not be checked | |
308 | * out to the working tree and it does not matter | |
309 | * if pathspec matched this entry. We will not do | |
310 | * anything to this entry at all. | |
311 | */ | |
0a1283bc | 312 | continue; |
e721c154 NTND |
313 | /* |
314 | * Either this entry came from the tree-ish we are | |
315 | * checking the paths out of, or we are checking out | |
316 | * of the index. | |
317 | * | |
318 | * If it comes from the tree-ish, we already know it | |
319 | * matches the pathspec and could just stamp | |
320 | * CE_MATCHED to it from update_some(). But we still | |
321 | * need ps_matched and read_tree_recursive (and | |
322 | * eventually tree_entry_interesting) cannot fill | |
323 | * ps_matched yet. Once it can, we can avoid calling | |
324 | * match_pathspec() for _all_ entries when | |
325 | * opts->source_tree != NULL. | |
326 | */ | |
6d2df284 | 327 | if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched)) |
e721c154 | 328 | ce->ce_flags |= CE_MATCHED; |
782c2d65 DB |
329 | } |
330 | ||
17ddc66e | 331 | if (report_path_error(ps_matched, &opts->pathspec, opts->prefix)) { |
e721c154 | 332 | free(ps_matched); |
782c2d65 | 333 | return 1; |
e721c154 NTND |
334 | } |
335 | free(ps_matched); | |
782c2d65 | 336 | |
4421a823 JH |
337 | /* "checkout -m path" to recreate conflicted state */ |
338 | if (opts->merge) | |
e721c154 | 339 | unmerge_marked_index(&the_index); |
4421a823 | 340 | |
8fdcf312 JH |
341 | /* Any unmerged paths? */ |
342 | for (pos = 0; pos < active_nr; pos++) { | |
9c5e6c80 | 343 | const struct cache_entry *ce = active_cache[pos]; |
e721c154 | 344 | if (ce->ce_flags & CE_MATCHED) { |
8fdcf312 JH |
345 | if (!ce_stage(ce)) |
346 | continue; | |
db941099 | 347 | if (opts->force) { |
e8a8a4d7 | 348 | warning(_("path '%s' is unmerged"), ce->name); |
f9022075 SB |
349 | } else if (opts->writeout_stage) { |
350 | errs |= check_stage(opts->writeout_stage, ce, pos); | |
0cf8581e | 351 | } else if (opts->merge) { |
fbbccd0a | 352 | errs |= check_stages((1<<2) | (1<<3), ce, pos); |
db941099 JH |
353 | } else { |
354 | errs = 1; | |
e8a8a4d7 | 355 | error(_("path '%s' is unmerged"), ce->name); |
db941099 | 356 | } |
8fdcf312 JH |
357 | pos = skip_same_name(ce, pos) - 1; |
358 | } | |
359 | } | |
360 | if (errs) | |
361 | return 1; | |
362 | ||
d2b3691b | 363 | /* Now we are committed to check them out */ |
782c2d65 DB |
364 | state.force = 1; |
365 | state.refresh_cache = 1; | |
d4a2024a | 366 | state.istate = &the_index; |
2841e8f8 LS |
367 | |
368 | enable_delayed_checkout(&state); | |
782c2d65 DB |
369 | for (pos = 0; pos < active_nr; pos++) { |
370 | struct cache_entry *ce = active_cache[pos]; | |
e721c154 | 371 | if (ce->ce_flags & CE_MATCHED) { |
8fdcf312 JH |
372 | if (!ce_stage(ce)) { |
373 | errs |= checkout_entry(ce, &state, NULL); | |
374 | continue; | |
375 | } | |
f9022075 SB |
376 | if (opts->writeout_stage) |
377 | errs |= checkout_stage(opts->writeout_stage, ce, pos, &state); | |
378 | else if (opts->merge) | |
0cf8581e | 379 | errs |= checkout_merged(pos, &state); |
8fdcf312 | 380 | pos = skip_same_name(ce, pos) - 1; |
782c2d65 DB |
381 | } |
382 | } | |
2841e8f8 | 383 | errs |= finish_delayed_checkout(&state); |
782c2d65 | 384 | |
837e34eb | 385 | if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) |
e8a8a4d7 | 386 | die(_("unable to write new index file")); |
75336878 | 387 | |
34c290a6 | 388 | read_ref_full("HEAD", 0, &rev, NULL); |
21e1ee8f | 389 | head = lookup_commit_reference_gently(the_repository, &rev, 1); |
782c2d65 | 390 | |
d2b3691b JH |
391 | errs |= post_checkout_hook(head, head, 0); |
392 | return errs; | |
782c2d65 DB |
393 | } |
394 | ||
a2b4994c NTND |
395 | static void show_local_changes(struct object *head, |
396 | const struct diff_options *opts) | |
782c2d65 DB |
397 | { |
398 | struct rev_info rev; | |
399 | /* I think we want full paths, even if we're in a subdirectory. */ | |
400 | init_revisions(&rev, NULL); | |
175f6e59 | 401 | rev.diffopt.flags = opts->flags; |
782c2d65 | 402 | rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS; |
28452655 | 403 | diff_setup_done(&rev.diffopt); |
782c2d65 DB |
404 | add_pending_object(&rev, head, NULL); |
405 | run_diff_index(&rev, 0); | |
406 | } | |
407 | ||
b3c0494a | 408 | static void describe_detached_head(const char *msg, struct commit *commit) |
782c2d65 | 409 | { |
f285a2d7 | 410 | struct strbuf sb = STRBUF_INIT; |
ca69d4d5 | 411 | |
3c621839 JK |
412 | if (!parse_commit(commit)) |
413 | pp_commit_easy(CMIT_FMT_ONELINE, commit, &sb); | |
ca69d4d5 AR |
414 | if (print_sha1_ellipsis()) { |
415 | fprintf(stderr, "%s %s... %s\n", msg, | |
aab9583f | 416 | find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV), sb.buf); |
ca69d4d5 AR |
417 | } else { |
418 | fprintf(stderr, "%s %s %s\n", msg, | |
aab9583f | 419 | find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV), sb.buf); |
ca69d4d5 | 420 | } |
782c2d65 DB |
421 | strbuf_release(&sb); |
422 | } | |
423 | ||
a2b4994c NTND |
424 | static int reset_tree(struct tree *tree, const struct checkout_opts *o, |
425 | int worktree, int *writeout_error) | |
782c2d65 DB |
426 | { |
427 | struct unpack_trees_options opts; | |
428 | struct tree_desc tree_desc; | |
bc052d7f | 429 | |
782c2d65 DB |
430 | memset(&opts, 0, sizeof(opts)); |
431 | opts.head_idx = -1; | |
6286a08d JH |
432 | opts.update = worktree; |
433 | opts.skip_unmerged = !worktree; | |
782c2d65 DB |
434 | opts.reset = 1; |
435 | opts.merge = 1; | |
436 | opts.fn = oneway_merge; | |
870ebdb9 | 437 | opts.verbose_update = o->show_progress; |
34110cd4 LT |
438 | opts.src_index = &the_index; |
439 | opts.dst_index = &the_index; | |
782c2d65 DB |
440 | parse_tree(tree); |
441 | init_tree_desc(&tree_desc, tree->buffer, tree->size); | |
291d823e JH |
442 | switch (unpack_trees(1, &tree_desc, &opts)) { |
443 | case -2: | |
a2b4994c | 444 | *writeout_error = 1; |
291d823e JH |
445 | /* |
446 | * We return 0 nevertheless, as the index is all right | |
447 | * and more importantly we have made best efforts to | |
448 | * update paths in the work tree, and we cannot revert | |
449 | * them. | |
450 | */ | |
1cf01a34 | 451 | /* fallthrough */ |
291d823e JH |
452 | case 0: |
453 | return 0; | |
454 | default: | |
84a5750b | 455 | return 128; |
291d823e | 456 | } |
782c2d65 DB |
457 | } |
458 | ||
782c2d65 DB |
459 | struct branch_info { |
460 | const char *name; /* The short name used */ | |
461 | const char *path; /* The full name of a real branch */ | |
462 | struct commit *commit; /* The named commit */ | |
5883034c NTND |
463 | /* |
464 | * if not null the branch is detached because it's already | |
465 | * checked out in this checkout | |
466 | */ | |
467 | char *checkout; | |
782c2d65 DB |
468 | }; |
469 | ||
470 | static void setup_branch_path(struct branch_info *branch) | |
471 | { | |
f285a2d7 | 472 | struct strbuf buf = STRBUF_INIT; |
ae5a6c36 | 473 | |
fd4692ff | 474 | strbuf_branchname(&buf, branch->name, INTERPRET_BRANCH_LOCAL); |
a552de75 | 475 | if (strcmp(buf.buf, branch->name)) |
ae5a6c36 | 476 | branch->name = xstrdup(buf.buf); |
a552de75 | 477 | strbuf_splice(&buf, 0, 0, "refs/heads/", 11); |
782c2d65 DB |
478 | branch->path = strbuf_detach(&buf, NULL); |
479 | } | |
480 | ||
fa655d84 BP |
481 | /* |
482 | * Skip merging the trees, updating the index and working directory if and | |
483 | * only if we are creating a new branch via "git checkout -b <new_branch>." | |
484 | */ | |
485 | static int skip_merge_working_tree(const struct checkout_opts *opts, | |
486 | const struct branch_info *old_branch_info, | |
487 | const struct branch_info *new_branch_info) | |
488 | { | |
489 | /* | |
490 | * Do the merge if sparse checkout is on and the user has not opted in | |
491 | * to the optimized behavior | |
492 | */ | |
493 | if (core_apply_sparse_checkout && !checkout_optimize_new_branch) | |
494 | return 0; | |
495 | ||
496 | /* | |
497 | * We must do the merge if we are actually moving to a new commit. | |
498 | */ | |
499 | if (!old_branch_info->commit || !new_branch_info->commit || | |
e43d2dcc JK |
500 | !oideq(&old_branch_info->commit->object.oid, |
501 | &new_branch_info->commit->object.oid)) | |
fa655d84 BP |
502 | return 0; |
503 | ||
504 | /* | |
505 | * opts->patch_mode cannot be used with switching branches so is | |
506 | * not tested here | |
507 | */ | |
508 | ||
509 | /* | |
510 | * opts->quiet only impacts output so doesn't require a merge | |
511 | */ | |
512 | ||
513 | /* | |
514 | * Honor the explicit request for a three-way merge or to throw away | |
515 | * local changes | |
516 | */ | |
517 | if (opts->merge || opts->force) | |
518 | return 0; | |
519 | ||
520 | /* | |
521 | * --detach is documented as "updating the index and the files in the | |
522 | * working tree" but this optimization skips those steps so fall through | |
523 | * to the regular code path. | |
524 | */ | |
525 | if (opts->force_detach) | |
526 | return 0; | |
527 | ||
528 | /* | |
529 | * opts->writeout_stage cannot be used with switching branches so is | |
530 | * not tested here | |
531 | */ | |
532 | ||
533 | /* | |
534 | * Honor the explicit ignore requests | |
535 | */ | |
536 | if (!opts->overwrite_ignore || opts->ignore_skipworktree || | |
537 | opts->ignore_other_worktrees) | |
538 | return 0; | |
539 | ||
540 | /* | |
541 | * opts->show_progress only impacts output so doesn't require a merge | |
542 | */ | |
543 | ||
544 | /* | |
545 | * If we aren't creating a new branch any changes or updates will | |
546 | * happen in the existing branch. Since that could only be updating | |
547 | * the index and working directory, we don't want to skip those steps | |
548 | * or we've defeated any purpose in running the command. | |
549 | */ | |
550 | if (!opts->new_branch) | |
551 | return 0; | |
552 | ||
553 | /* | |
554 | * new_branch_force is defined to "create/reset and checkout a branch" | |
555 | * so needs to go through the merge to do the reset | |
556 | */ | |
557 | if (opts->new_branch_force) | |
558 | return 0; | |
559 | ||
560 | /* | |
561 | * A new orphaned branch requrires the index and the working tree to be | |
562 | * adjusted to <start_point> | |
563 | */ | |
564 | if (opts->new_orphan_branch) | |
565 | return 0; | |
566 | ||
567 | /* | |
568 | * Remaining variables are not checkout options but used to track state | |
569 | */ | |
570 | ||
571 | return 1; | |
572 | } | |
573 | ||
a2b4994c | 574 | static int merge_working_tree(const struct checkout_opts *opts, |
c8a3ea1f BW |
575 | struct branch_info *old_branch_info, |
576 | struct branch_info *new_branch_info, | |
a2b4994c | 577 | int *writeout_error) |
782c2d65 DB |
578 | { |
579 | int ret; | |
837e34eb | 580 | struct lock_file lock_file = LOCK_INIT; |
b96524f8 | 581 | |
837e34eb | 582 | hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); |
53996fe5 | 583 | if (read_cache_preload(NULL) < 0) |
e923a8ab | 584 | return error(_("index file corrupt")); |
782c2d65 | 585 | |
cfc5789a | 586 | resolve_undo_clear(); |
782c2d65 | 587 | if (opts->force) { |
2e27bd77 DS |
588 | ret = reset_tree(get_commit_tree(new_branch_info->commit), |
589 | opts, 1, writeout_error); | |
782c2d65 DB |
590 | if (ret) |
591 | return ret; | |
592 | } else { | |
593 | struct tree_desc trees[2]; | |
594 | struct tree *tree; | |
595 | struct unpack_trees_options topts; | |
bc052d7f | 596 | |
782c2d65 DB |
597 | memset(&topts, 0, sizeof(topts)); |
598 | topts.head_idx = -1; | |
34110cd4 LT |
599 | topts.src_index = &the_index; |
600 | topts.dst_index = &the_index; | |
782c2d65 | 601 | |
e294030f | 602 | setup_unpack_trees_porcelain(&topts, "checkout"); |
8ccba008 | 603 | |
782c2d65 DB |
604 | refresh_cache(REFRESH_QUIET); |
605 | ||
606 | if (unmerged_cache()) { | |
e8a8a4d7 | 607 | error(_("you need to resolve your current index first")); |
04c9e11f | 608 | return 1; |
782c2d65 | 609 | } |
04c9e11f JH |
610 | |
611 | /* 2-way merge to the new branch */ | |
fa7b3c2f | 612 | topts.initial_checkout = is_cache_unborn(); |
04c9e11f JH |
613 | topts.update = 1; |
614 | topts.merge = 1; | |
c8a3ea1f | 615 | topts.gently = opts->merge && old_branch_info->commit; |
870ebdb9 | 616 | topts.verbose_update = opts->show_progress; |
04c9e11f | 617 | topts.fn = twoway_merge; |
c1d7036b NTND |
618 | if (opts->overwrite_ignore) { |
619 | topts.dir = xcalloc(1, sizeof(*topts.dir)); | |
620 | topts.dir->flags |= DIR_SHOW_IGNORED; | |
621 | setup_standard_excludes(topts.dir); | |
622 | } | |
c8a3ea1f BW |
623 | tree = parse_tree_indirect(old_branch_info->commit ? |
624 | &old_branch_info->commit->object.oid : | |
eb0ccfd7 | 625 | the_hash_algo->empty_tree); |
04c9e11f | 626 | init_tree_desc(&trees[0], tree->buffer, tree->size); |
c8a3ea1f | 627 | tree = parse_tree_indirect(&new_branch_info->commit->object.oid); |
04c9e11f JH |
628 | init_tree_desc(&trees[1], tree->buffer, tree->size); |
629 | ||
291d823e | 630 | ret = unpack_trees(2, trees, &topts); |
1c41d280 | 631 | clear_unpack_trees_porcelain(&topts); |
49d833dc | 632 | if (ret == -1) { |
782c2d65 DB |
633 | /* |
634 | * Unpack couldn't do a trivial merge; either | |
635 | * give up or do a real merge, depending on | |
636 | * whether the merge flag was used. | |
637 | */ | |
638 | struct tree *result; | |
639 | struct tree *work; | |
8a2fce18 | 640 | struct merge_options o; |
782c2d65 DB |
641 | if (!opts->merge) |
642 | return 1; | |
64da3ae5 JH |
643 | |
644 | /* | |
c8a3ea1f | 645 | * Without old_branch_info->commit, the below is the same as |
64da3ae5 JH |
646 | * the two-tree unpack we already tried and failed. |
647 | */ | |
c8a3ea1f | 648 | if (!old_branch_info->commit) |
64da3ae5 | 649 | return 1; |
782c2d65 DB |
650 | |
651 | /* Do more real merge */ | |
652 | ||
653 | /* | |
654 | * We update the index fully, then write the | |
655 | * tree from the index, then merge the new | |
656 | * branch with the current tree, with the old | |
657 | * branch as the base. Then we reset the index | |
658 | * (but not the working tree) to the new | |
659 | * branch, leaving the working tree as the | |
660 | * merged version, but skipping unmerged | |
661 | * entries in the index. | |
662 | */ | |
663 | ||
610d55af | 664 | add_files_to_cache(NULL, NULL, 0); |
7610fa57 JN |
665 | /* |
666 | * NEEDSWORK: carrying over local changes | |
667 | * when branches have different end-of-line | |
668 | * normalization (or clean+smudge rules) is | |
669 | * a pain; plumb in an option to set | |
670 | * o.renormalize? | |
671 | */ | |
8a2fce18 MV |
672 | init_merge_options(&o); |
673 | o.verbosity = 0; | |
674 | work = write_tree_from_memory(&o); | |
782c2d65 | 675 | |
2e27bd77 DS |
676 | ret = reset_tree(get_commit_tree(new_branch_info->commit), |
677 | opts, 1, | |
a2b4994c | 678 | writeout_error); |
782c2d65 DB |
679 | if (ret) |
680 | return ret; | |
c8a3ea1f BW |
681 | o.ancestor = old_branch_info->name; |
682 | o.branch1 = new_branch_info->name; | |
8a2fce18 | 683 | o.branch2 = "local"; |
2e27bd77 DS |
684 | ret = merge_trees(&o, |
685 | get_commit_tree(new_branch_info->commit), | |
686 | work, | |
687 | get_commit_tree(old_branch_info->commit), | |
688 | &result); | |
f241ff0d JS |
689 | if (ret < 0) |
690 | exit(128); | |
2e27bd77 DS |
691 | ret = reset_tree(get_commit_tree(new_branch_info->commit), |
692 | opts, 0, | |
a2b4994c | 693 | writeout_error); |
548009c0 | 694 | strbuf_release(&o.obuf); |
84a5750b JH |
695 | if (ret) |
696 | return ret; | |
782c2d65 DB |
697 | } |
698 | } | |
699 | ||
aecf567c DT |
700 | if (!active_cache_tree) |
701 | active_cache_tree = cache_tree(); | |
702 | ||
703 | if (!cache_tree_fully_valid(active_cache_tree)) | |
3fd13cbc | 704 | cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR); |
aecf567c | 705 | |
837e34eb | 706 | if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) |
e8a8a4d7 | 707 | die(_("unable to write new index file")); |
782c2d65 | 708 | |
7fe4a728 | 709 | if (!opts->force && !opts->quiet) |
c8a3ea1f | 710 | show_local_changes(&new_branch_info->commit->object, &opts->diff_options); |
782c2d65 DB |
711 | |
712 | return 0; | |
713 | } | |
714 | ||
c8a3ea1f | 715 | static void report_tracking(struct branch_info *new_branch_info) |
79a1e6b4 | 716 | { |
6d21bf96 | 717 | struct strbuf sb = STRBUF_INIT; |
c8a3ea1f | 718 | struct branch *branch = branch_get(new_branch_info->name); |
79a1e6b4 | 719 | |
f39a757d | 720 | if (!format_tracking_info(branch, &sb, AHEAD_BEHIND_FULL)) |
79a1e6b4 | 721 | return; |
6d21bf96 JH |
722 | fputs(sb.buf, stdout); |
723 | strbuf_release(&sb); | |
b0030db3 | 724 | } |
79a1e6b4 | 725 | |
a2b4994c | 726 | static void update_refs_for_switch(const struct checkout_opts *opts, |
c8a3ea1f BW |
727 | struct branch_info *old_branch_info, |
728 | struct branch_info *new_branch_info) | |
782c2d65 | 729 | { |
f285a2d7 | 730 | struct strbuf msg = STRBUF_INIT; |
3bed291a | 731 | const char *old_desc, *reflog_msg; |
782c2d65 | 732 | if (opts->new_branch) { |
3631bf77 | 733 | if (opts->new_orphan_branch) { |
341fb286 CW |
734 | char *refname; |
735 | ||
736 | refname = mkpathdup("refs/heads/%s", opts->new_orphan_branch); | |
737 | if (opts->new_branch_log && | |
738 | !should_autocreate_reflog(refname)) { | |
1a83c240 | 739 | int ret; |
a4c653df | 740 | struct strbuf err = STRBUF_INIT; |
3631bf77 | 741 | |
abd0cd3a | 742 | ret = safe_create_reflog(refname, 1, &err); |
1a83c240 | 743 | if (ret) { |
a4c653df DT |
744 | fprintf(stderr, _("Can not do reflog for '%s': %s\n"), |
745 | opts->new_orphan_branch, err.buf); | |
746 | strbuf_release(&err); | |
341fb286 | 747 | free(refname); |
3631bf77 EM |
748 | return; |
749 | } | |
abd0cd3a | 750 | strbuf_release(&err); |
3631bf77 | 751 | } |
341fb286 | 752 | free(refname); |
3631bf77 EM |
753 | } |
754 | else | |
c8a3ea1f | 755 | create_branch(opts->new_branch, new_branch_info->name, |
02ac9837 | 756 | opts->new_branch_force ? 1 : 0, |
39bd6f72 | 757 | opts->new_branch_force ? 1 : 0, |
e2bbd0cc | 758 | opts->new_branch_log, |
f9a482e6 | 759 | opts->quiet, |
39bd6f72 | 760 | opts->track); |
c8a3ea1f BW |
761 | new_branch_info->name = opts->new_branch; |
762 | setup_branch_path(new_branch_info); | |
782c2d65 DB |
763 | } |
764 | ||
c8a3ea1f BW |
765 | old_desc = old_branch_info->name; |
766 | if (!old_desc && old_branch_info->commit) | |
767 | old_desc = oid_to_hex(&old_branch_info->commit->object.oid); | |
3bed291a RR |
768 | |
769 | reflog_msg = getenv("GIT_REFLOG_ACTION"); | |
770 | if (!reflog_msg) | |
771 | strbuf_addf(&msg, "checkout: moving from %s to %s", | |
c8a3ea1f | 772 | old_desc ? old_desc : "(invalid)", new_branch_info->name); |
3bed291a RR |
773 | else |
774 | strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg)); | |
782c2d65 | 775 | |
c8a3ea1f | 776 | if (!strcmp(new_branch_info->name, "HEAD") && !new_branch_info->path && !opts->force_detach) { |
f8bd36a4 | 777 | /* Nothing to do. */ |
c8a3ea1f BW |
778 | } else if (opts->force_detach || !new_branch_info->path) { /* No longer on any branch. */ |
779 | update_ref(msg.buf, "HEAD", &new_branch_info->commit->object.oid, NULL, | |
91774afc | 780 | REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR); |
f8bd36a4 | 781 | if (!opts->quiet) { |
c8a3ea1f | 782 | if (old_branch_info->path && |
779b88a9 | 783 | advice_detached_head && !opts->force_detach) |
c8a3ea1f BW |
784 | detach_advice(new_branch_info->name); |
785 | describe_detached_head(_("HEAD is now at"), new_branch_info->commit); | |
f8bd36a4 | 786 | } |
c8a3ea1f BW |
787 | } else if (new_branch_info->path) { /* Switch branches. */ |
788 | if (create_symref("HEAD", new_branch_info->path, msg.buf) < 0) | |
4636f651 | 789 | die(_("unable to update HEAD")); |
782c2d65 | 790 | if (!opts->quiet) { |
c8a3ea1f | 791 | if (old_branch_info->path && !strcmp(new_branch_info->path, old_branch_info->path)) { |
39bd6f72 JN |
792 | if (opts->new_branch_force) |
793 | fprintf(stderr, _("Reset branch '%s'\n"), | |
c8a3ea1f | 794 | new_branch_info->name); |
39bd6f72 JN |
795 | else |
796 | fprintf(stderr, _("Already on '%s'\n"), | |
c8a3ea1f | 797 | new_branch_info->name); |
08eaa4be ÆAB |
798 | } else if (opts->new_branch) { |
799 | if (opts->branch_exists) | |
c8a3ea1f | 800 | fprintf(stderr, _("Switched to and reset branch '%s'\n"), new_branch_info->name); |
08eaa4be | 801 | else |
c8a3ea1f | 802 | fprintf(stderr, _("Switched to a new branch '%s'\n"), new_branch_info->name); |
08eaa4be | 803 | } else { |
e8a8a4d7 | 804 | fprintf(stderr, _("Switched to branch '%s'\n"), |
c8a3ea1f | 805 | new_branch_info->name); |
08eaa4be | 806 | } |
782c2d65 | 807 | } |
c8a3ea1f BW |
808 | if (old_branch_info->path && old_branch_info->name) { |
809 | if (!ref_exists(old_branch_info->path) && reflog_exists(old_branch_info->path)) | |
810 | delete_reflog(old_branch_info->path); | |
3631bf77 | 811 | } |
782c2d65 DB |
812 | } |
813 | remove_branch_state(); | |
814 | strbuf_release(&msg); | |
32669671 | 815 | if (!opts->quiet && |
c8a3ea1f BW |
816 | (new_branch_info->path || (!opts->force_detach && !strcmp(new_branch_info->name, "HEAD")))) |
817 | report_tracking(new_branch_info); | |
782c2d65 DB |
818 | } |
819 | ||
468224e5 | 820 | static int add_pending_uninteresting_ref(const char *refname, |
fcb615f5 | 821 | const struct object_id *oid, |
468224e5 | 822 | int flags, void *cb_data) |
8e2dc6ac | 823 | { |
a58a1b01 | 824 | add_pending_oid(cb_data, refname, oid, UNINTERESTING); |
5c08dc48 JK |
825 | return 0; |
826 | } | |
8e2dc6ac JH |
827 | |
828 | static void describe_one_orphan(struct strbuf *sb, struct commit *commit) | |
829 | { | |
0be240cc | 830 | strbuf_addstr(sb, " "); |
30e677e0 | 831 | strbuf_add_unique_abbrev(sb, &commit->object.oid, DEFAULT_ABBREV); |
0be240cc | 832 | strbuf_addch(sb, ' '); |
3c621839 JK |
833 | if (!parse_commit(commit)) |
834 | pp_commit_easy(CMIT_FMT_ONELINE, commit, sb); | |
8e2dc6ac JH |
835 | strbuf_addch(sb, '\n'); |
836 | } | |
837 | ||
838 | #define ORPHAN_CUTOFF 4 | |
839 | static void suggest_reattach(struct commit *commit, struct rev_info *revs) | |
840 | { | |
841 | struct commit *c, *last = NULL; | |
842 | struct strbuf sb = STRBUF_INIT; | |
843 | int lost = 0; | |
844 | while ((c = get_revision(revs)) != NULL) { | |
845 | if (lost < ORPHAN_CUTOFF) | |
846 | describe_one_orphan(&sb, c); | |
847 | last = c; | |
848 | lost++; | |
849 | } | |
850 | if (ORPHAN_CUTOFF < lost) { | |
851 | int more = lost - ORPHAN_CUTOFF; | |
852 | if (more == 1) | |
853 | describe_one_orphan(&sb, last); | |
854 | else | |
f06f08b7 | 855 | strbuf_addf(&sb, _(" ... and %d more.\n"), more); |
8e2dc6ac JH |
856 | } |
857 | ||
858 | fprintf(stderr, | |
f06f08b7 ÆAB |
859 | Q_( |
860 | /* The singular version */ | |
861 | "Warning: you are leaving %d commit behind, " | |
862 | "not connected to\n" | |
863 | "any of your branches:\n\n" | |
0faf2474 | 864 | "%s\n", |
f06f08b7 ÆAB |
865 | /* The plural version */ |
866 | "Warning: you are leaving %d commits behind, " | |
8e2dc6ac JH |
867 | "not connected to\n" |
868 | "any of your branches:\n\n" | |
f807b3dc | 869 | "%s\n", |
f06f08b7 ÆAB |
870 | /* Give ngettext() the count */ |
871 | lost), | |
872 | lost, | |
f807b3dc | 873 | sb.buf); |
8e2dc6ac | 874 | strbuf_release(&sb); |
f807b3dc JH |
875 | |
876 | if (advice_detached_head) | |
877 | fprintf(stderr, | |
fc792ca8 TS |
878 | Q_( |
879 | /* The singular version */ | |
880 | "If you want to keep it by creating a new branch, " | |
881 | "this may be a good time\nto do so with:\n\n" | |
882 | " git branch <new-branch-name> %s\n\n", | |
883 | /* The plural version */ | |
f807b3dc JH |
884 | "If you want to keep them by creating a new branch, " |
885 | "this may be a good time\nto do so with:\n\n" | |
fc792ca8 TS |
886 | " git branch <new-branch-name> %s\n\n", |
887 | /* Give ngettext() the count */ | |
888 | lost), | |
aab9583f | 889 | find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV)); |
8e2dc6ac JH |
890 | } |
891 | ||
892 | /* | |
893 | * We are about to leave commit that was at the tip of a detached | |
894 | * HEAD. If it is not reachable from any ref, this is the last chance | |
895 | * for the user to do so without resorting to reflog. | |
896 | */ | |
c8a3ea1f | 897 | static void orphaned_commit_warning(struct commit *old_commit, struct commit *new_commit) |
8e2dc6ac | 898 | { |
8e2dc6ac | 899 | struct rev_info revs; |
c8a3ea1f | 900 | struct object *object = &old_commit->object; |
8e2dc6ac JH |
901 | |
902 | init_revisions(&revs, NULL); | |
468224e5 RS |
903 | setup_revisions(0, NULL, &revs, NULL); |
904 | ||
905 | object->flags &= ~UNINTERESTING; | |
f2fd0760 | 906 | add_pending_object(&revs, object, oid_to_hex(&object->oid)); |
468224e5 | 907 | |
fcb615f5 | 908 | for_each_ref(add_pending_uninteresting_ref, &revs); |
c8a3ea1f | 909 | add_pending_oid(&revs, "HEAD", &new_commit->object.oid, UNINTERESTING); |
468224e5 | 910 | |
8e2dc6ac | 911 | if (prepare_revision_walk(&revs)) |
6c80cd29 | 912 | die(_("internal error in revision walk")); |
c8a3ea1f BW |
913 | if (!(old_commit->object.flags & UNINTERESTING)) |
914 | suggest_reattach(old_commit, &revs); | |
8e2dc6ac | 915 | else |
c8a3ea1f | 916 | describe_detached_head(_("Previous HEAD position was"), old_commit); |
5c08dc48 | 917 | |
b2ccdf7f | 918 | /* Clean up objects used, as they will be reused. */ |
a9a03fa0 | 919 | clear_commit_marks_all(ALL_REV_FLAGS); |
8e2dc6ac JH |
920 | } |
921 | ||
e51e3057 | 922 | static int switch_branches(const struct checkout_opts *opts, |
c8a3ea1f | 923 | struct branch_info *new_branch_info) |
782c2d65 DB |
924 | { |
925 | int ret = 0; | |
c8a3ea1f | 926 | struct branch_info old_branch_info; |
96ec7b1e | 927 | void *path_to_free; |
60af7691 | 928 | struct object_id rev; |
a2b4994c | 929 | int flag, writeout_error = 0; |
c8a3ea1f BW |
930 | memset(&old_branch_info, 0, sizeof(old_branch_info)); |
931 | old_branch_info.path = path_to_free = resolve_refdup("HEAD", 0, &rev, &flag); | |
932 | if (old_branch_info.path) | |
21e1ee8f | 933 | old_branch_info.commit = lookup_commit_reference_gently(the_repository, &rev, 1); |
96ec7b1e | 934 | if (!(flag & REF_ISSYMREF)) |
c8a3ea1f | 935 | old_branch_info.path = NULL; |
782c2d65 | 936 | |
c8a3ea1f BW |
937 | if (old_branch_info.path) |
938 | skip_prefix(old_branch_info.path, "refs/heads/", &old_branch_info.name); | |
782c2d65 | 939 | |
c8a3ea1f BW |
940 | if (!new_branch_info->name) { |
941 | new_branch_info->name = "HEAD"; | |
942 | new_branch_info->commit = old_branch_info.commit; | |
943 | if (!new_branch_info->commit) | |
e8a8a4d7 | 944 | die(_("You are on a branch yet to be born")); |
c8a3ea1f | 945 | parse_commit_or_die(new_branch_info->commit); |
782c2d65 DB |
946 | } |
947 | ||
fa655d84 BP |
948 | /* optimize the "checkout -b <new_branch> path */ |
949 | if (skip_merge_working_tree(opts, &old_branch_info, new_branch_info)) { | |
950 | if (!checkout_optimize_new_branch && !opts->quiet) { | |
951 | if (read_cache_preload(NULL) < 0) | |
952 | return error(_("index file corrupt")); | |
953 | show_local_changes(&new_branch_info->commit->object, &opts->diff_options); | |
954 | } | |
955 | } else { | |
956 | ret = merge_working_tree(opts, &old_branch_info, new_branch_info, &writeout_error); | |
957 | if (ret) { | |
958 | free(path_to_free); | |
959 | return ret; | |
960 | } | |
96ec7b1e | 961 | } |
782c2d65 | 962 | |
c8a3ea1f BW |
963 | if (!opts->quiet && !old_branch_info.path && old_branch_info.commit && new_branch_info->commit != old_branch_info.commit) |
964 | orphaned_commit_warning(old_branch_info.commit, new_branch_info->commit); | |
77ebd56d | 965 | |
c8a3ea1f | 966 | update_refs_for_switch(opts, &old_branch_info, new_branch_info); |
782c2d65 | 967 | |
c8a3ea1f | 968 | ret = post_checkout_hook(old_branch_info.commit, new_branch_info->commit, 1); |
96ec7b1e | 969 | free(path_to_free); |
a2b4994c | 970 | return ret || writeout_error; |
782c2d65 DB |
971 | } |
972 | ||
0cf8581e JH |
973 | static int git_checkout_config(const char *var, const char *value, void *cb) |
974 | { | |
fa655d84 BP |
975 | if (!strcmp(var, "checkout.optimizenewbranch")) { |
976 | checkout_optimize_new_branch = git_config_bool(var, value); | |
977 | return 0; | |
978 | } | |
979 | ||
175f6e59 JS |
980 | if (!strcmp(var, "diff.ignoresubmodules")) { |
981 | struct checkout_opts *opts = cb; | |
982 | handle_ignore_submodules_arg(&opts->diff_options, value); | |
983 | return 0; | |
984 | } | |
23b4c7bc | 985 | |
59556548 | 986 | if (starts_with(var, "submodule.")) |
7463e2ec | 987 | return git_default_submodule_config(var, value, NULL); |
23b4c7bc | 988 | |
175f6e59 | 989 | return git_xmerge_config(var, value, NULL); |
0cf8581e JH |
990 | } |
991 | ||
09ebad6f JN |
992 | static int parse_branchname_arg(int argc, const char **argv, |
993 | int dwim_new_local_branch_ok, | |
c8a3ea1f | 994 | struct branch_info *new_branch_info, |
10f102be | 995 | struct checkout_opts *opts, |
3c87aa94 ÆAB |
996 | struct object_id *rev, |
997 | int *dwim_remotes_matched) | |
09ebad6f | 998 | { |
10f102be NTND |
999 | struct tree **source_tree = &opts->source_tree; |
1000 | const char **new_branch = &opts->new_branch; | |
09ebad6f | 1001 | int argcount = 0; |
60af7691 | 1002 | struct object_id branch_rev; |
09ebad6f | 1003 | const char *arg; |
bca39695 MM |
1004 | int dash_dash_pos; |
1005 | int has_dash_dash = 0; | |
1006 | int i; | |
09ebad6f JN |
1007 | |
1008 | /* | |
1009 | * case 1: git checkout <ref> -- [<paths>] | |
1010 | * | |
1011 | * <ref> must be a valid tree, everything after the '--' must be | |
1012 | * a path. | |
1013 | * | |
1014 | * case 2: git checkout -- [<paths>] | |
1015 | * | |
1016 | * everything after the '--' must be paths. | |
1017 | * | |
a047fafc | 1018 | * case 3: git checkout <something> [--] |
09ebad6f | 1019 | * |
a047fafc MM |
1020 | * (a) If <something> is a commit, that is to |
1021 | * switch to the branch or detach HEAD at it. As a special case, | |
1022 | * if <something> is A...B (missing A or B means HEAD but you can | |
1023 | * omit at most one side), and if there is a unique merge base | |
1024 | * between A and B, A...B names that merge base. | |
09ebad6f | 1025 | * |
a047fafc | 1026 | * (b) If <something> is _not_ a commit, either "--" is present |
01689909 | 1027 | * or <something> is not a path, no -t or -b was given, and |
a047fafc | 1028 | * and there is a tracking branch whose name is <something> |
8d7b558b ÆAB |
1029 | * in one and only one remote (or if the branch exists on the |
1030 | * remote named in checkout.defaultRemote), then this is a | |
1031 | * short-hand to fork local <something> from that | |
1032 | * remote-tracking branch. | |
09ebad6f | 1033 | * |
a047fafc MM |
1034 | * (c) Otherwise, if "--" is present, treat it like case (1). |
1035 | * | |
1036 | * (d) Otherwise : | |
1037 | * - if it's a reference, treat it like case (1) | |
1038 | * - else if it's a path, treat it like case (2) | |
1039 | * - else: fail. | |
1040 | * | |
1041 | * case 4: git checkout <something> <paths> | |
1042 | * | |
1043 | * The first argument must not be ambiguous. | |
09ebad6f JN |
1044 | * - If it's *only* a reference, treat it like case (1). |
1045 | * - If it's only a path, treat it like case (2). | |
1046 | * - else: fail. | |
1047 | * | |
1048 | */ | |
1049 | if (!argc) | |
1050 | return 0; | |
1051 | ||
09ebad6f | 1052 | arg = argv[0]; |
bca39695 MM |
1053 | dash_dash_pos = -1; |
1054 | for (i = 0; i < argc; i++) { | |
1055 | if (!strcmp(argv[i], "--")) { | |
1056 | dash_dash_pos = i; | |
1057 | break; | |
1058 | } | |
1059 | } | |
1060 | if (dash_dash_pos == 0) | |
1061 | return 1; /* case (2) */ | |
1062 | else if (dash_dash_pos == 1) | |
1063 | has_dash_dash = 1; /* case (3) or (1) */ | |
1064 | else if (dash_dash_pos >= 2) | |
1065 | die(_("only one reference expected, %d given."), dash_dash_pos); | |
09ebad6f JN |
1066 | |
1067 | if (!strcmp(arg, "-")) | |
1068 | arg = "@{-1}"; | |
1069 | ||
151b2911 | 1070 | if (get_oid_mb(arg, rev)) { |
a047fafc MM |
1071 | /* |
1072 | * Either case (3) or (4), with <something> not being | |
1073 | * a commit, or an attempt to use case (1) with an | |
1074 | * invalid ref. | |
1075 | * | |
1076 | * It's likely an error, but we need to find out if | |
1077 | * we should auto-create the branch, case (3).(b). | |
1078 | */ | |
1079 | int recover_with_dwim = dwim_new_local_branch_ok; | |
1080 | ||
df714f81 | 1081 | if (!has_dash_dash && |
b829b943 | 1082 | (check_filename(opts->prefix, arg) || !no_wildcard(arg))) |
a047fafc MM |
1083 | recover_with_dwim = 0; |
1084 | /* | |
1085 | * Accept "git checkout foo" and "git checkout foo --" | |
1086 | * as candidates for dwim. | |
1087 | */ | |
1088 | if (!(argc == 1 && !has_dash_dash) && | |
1089 | !(argc == 2 && has_dash_dash)) | |
1090 | recover_with_dwim = 0; | |
1091 | ||
1092 | if (recover_with_dwim) { | |
3c87aa94 ÆAB |
1093 | const char *remote = unique_tracking_name(arg, rev, |
1094 | dwim_remotes_matched); | |
a047fafc MM |
1095 | if (remote) { |
1096 | *new_branch = arg; | |
1097 | arg = remote; | |
1098 | /* DWIMmed to create local branch, case (3).(b) */ | |
1099 | } else { | |
1100 | recover_with_dwim = 0; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | if (!recover_with_dwim) { | |
1105 | if (has_dash_dash) | |
1106 | die(_("invalid reference: %s"), arg); | |
09ebad6f JN |
1107 | return argcount; |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* we can't end up being in (2) anymore, eat the argument */ | |
1112 | argcount++; | |
1113 | argv++; | |
1114 | argc--; | |
1115 | ||
c8a3ea1f BW |
1116 | new_branch_info->name = arg; |
1117 | setup_branch_path(new_branch_info); | |
09ebad6f | 1118 | |
c8a3ea1f BW |
1119 | if (!check_refname_format(new_branch_info->path, 0) && |
1120 | !read_ref(new_branch_info->path, &branch_rev)) | |
60af7691 | 1121 | oidcpy(rev, &branch_rev); |
09ebad6f | 1122 | else |
c8a3ea1f | 1123 | new_branch_info->path = NULL; /* not an existing branch */ |
09ebad6f | 1124 | |
21e1ee8f | 1125 | new_branch_info->commit = lookup_commit_reference_gently(the_repository, rev, 1); |
c8a3ea1f | 1126 | if (!new_branch_info->commit) { |
09ebad6f | 1127 | /* not a commit */ |
a9dbc179 | 1128 | *source_tree = parse_tree_indirect(rev); |
09ebad6f | 1129 | } else { |
c8a3ea1f | 1130 | parse_commit_or_die(new_branch_info->commit); |
2e27bd77 | 1131 | *source_tree = get_commit_tree(new_branch_info->commit); |
09ebad6f JN |
1132 | } |
1133 | ||
1134 | if (!*source_tree) /* case (1): want a tree */ | |
6c80cd29 | 1135 | die(_("reference is not a tree: %s"), arg); |
7f82b24e | 1136 | if (!has_dash_dash) { /* case (3).(d) -> (1) */ |
09ebad6f JN |
1137 | /* |
1138 | * Do not complain the most common case | |
1139 | * git checkout branch | |
1140 | * even if there happen to be a file called 'branch'; | |
1141 | * it would be extremely annoying. | |
1142 | */ | |
1143 | if (argc) | |
b829b943 | 1144 | verify_non_filename(opts->prefix, arg); |
09ebad6f JN |
1145 | } else { |
1146 | argcount++; | |
1147 | argv++; | |
1148 | argc--; | |
1149 | } | |
1150 | ||
1151 | return argcount; | |
1152 | } | |
1153 | ||
a2b4994c | 1154 | static int switch_unborn_to_new_branch(const struct checkout_opts *opts) |
abe19980 JH |
1155 | { |
1156 | int status; | |
1157 | struct strbuf branch_ref = STRBUF_INIT; | |
1158 | ||
8ced1aa0 CW |
1159 | if (!opts->new_branch) |
1160 | die(_("You are on a branch yet to be born")); | |
abe19980 JH |
1161 | strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch); |
1162 | status = create_symref("HEAD", branch_ref.buf, "checkout -b"); | |
1163 | strbuf_release(&branch_ref); | |
afa8c07a JK |
1164 | if (!opts->quiet) |
1165 | fprintf(stderr, _("Switched to a new branch '%s'\n"), | |
1166 | opts->new_branch); | |
abe19980 JH |
1167 | return status; |
1168 | } | |
1169 | ||
b6312c27 | 1170 | static int checkout_branch(struct checkout_opts *opts, |
c8a3ea1f | 1171 | struct branch_info *new_branch_info) |
b6312c27 | 1172 | { |
817b345a | 1173 | if (opts->pathspec.nr) |
b6312c27 NTND |
1174 | die(_("paths cannot be used with switching branches")); |
1175 | ||
1176 | if (opts->patch_mode) | |
1177 | die(_("'%s' cannot be used with switching branches"), | |
1178 | "--patch"); | |
1179 | ||
1180 | if (opts->writeout_stage) | |
1181 | die(_("'%s' cannot be used with switching branches"), | |
1182 | "--ours/--theirs"); | |
1183 | ||
1184 | if (opts->force && opts->merge) | |
1185 | die(_("'%s' cannot be used with '%s'"), "-f", "-m"); | |
1186 | ||
1187 | if (opts->force_detach && opts->new_branch) | |
1188 | die(_("'%s' cannot be used with '%s'"), | |
1189 | "--detach", "-b/-B/--orphan"); | |
1190 | ||
1191 | if (opts->new_orphan_branch) { | |
1192 | if (opts->track != BRANCH_TRACK_UNSPECIFIED) | |
1193 | die(_("'%s' cannot be used with '%s'"), "--orphan", "-t"); | |
1194 | } else if (opts->force_detach) { | |
1195 | if (opts->track != BRANCH_TRACK_UNSPECIFIED) | |
1196 | die(_("'%s' cannot be used with '%s'"), "--detach", "-t"); | |
1197 | } else if (opts->track == BRANCH_TRACK_UNSPECIFIED) | |
1198 | opts->track = git_branch_track; | |
1199 | ||
c8a3ea1f | 1200 | if (new_branch_info->name && !new_branch_info->commit) |
b6312c27 | 1201 | die(_("Cannot switch branch to a non-commit '%s'"), |
c8a3ea1f | 1202 | new_branch_info->name); |
b6312c27 | 1203 | |
c8a3ea1f | 1204 | if (new_branch_info->path && !opts->force_detach && !opts->new_branch && |
c265c533 | 1205 | !opts->ignore_other_worktrees) { |
e1c1ab9d | 1206 | int flag; |
efbd4fdf | 1207 | char *head_ref = resolve_refdup("HEAD", 0, NULL, &flag); |
e1c1ab9d | 1208 | if (head_ref && |
c8a3ea1f BW |
1209 | (!(flag & REF_ISSYMREF) || strcmp(head_ref, new_branch_info->path))) |
1210 | die_if_checked_out(new_branch_info->path, 1); | |
e1c1ab9d NTND |
1211 | free(head_ref); |
1212 | } | |
1213 | ||
c8a3ea1f | 1214 | if (!new_branch_info->commit && opts->new_branch) { |
60af7691 | 1215 | struct object_id rev; |
b6312c27 NTND |
1216 | int flag; |
1217 | ||
34c290a6 | 1218 | if (!read_ref_full("HEAD", 0, &rev, &flag) && |
60af7691 | 1219 | (flag & REF_ISSYMREF) && is_null_oid(&rev)) |
b6312c27 NTND |
1220 | return switch_unborn_to_new_branch(opts); |
1221 | } | |
c8a3ea1f | 1222 | return switch_branches(opts, new_branch_info); |
b6312c27 NTND |
1223 | } |
1224 | ||
782c2d65 DB |
1225 | int cmd_checkout(int argc, const char **argv, const char *prefix) |
1226 | { | |
1227 | struct checkout_opts opts; | |
c8a3ea1f | 1228 | struct branch_info new_branch_info; |
eac5a401 | 1229 | char *conflict_style = NULL; |
46148dd7 | 1230 | int dwim_new_local_branch = 1; |
3c87aa94 | 1231 | int dwim_remotes_matched = 0; |
782c2d65 | 1232 | struct option options[] = { |
e05a1093 NTND |
1233 | OPT__QUIET(&opts.quiet, N_("suppress progress reporting")), |
1234 | OPT_STRING('b', NULL, &opts.new_branch, N_("branch"), | |
1235 | N_("create and checkout a new branch")), | |
1236 | OPT_STRING('B', NULL, &opts.new_branch_force, N_("branch"), | |
1237 | N_("create/reset and checkout a branch")), | |
d5d09d47 | 1238 | OPT_BOOL('l', NULL, &opts.new_branch_log, N_("create reflog for new branch")), |
e923a8ab | 1239 | OPT_BOOL(0, "detach", &opts.force_detach, N_("detach HEAD at named commit")), |
e05a1093 | 1240 | OPT_SET_INT('t', "track", &opts.track, N_("set upstream info for new branch"), |
9ed36cfa | 1241 | BRANCH_TRACK_EXPLICIT), |
e703d711 | 1242 | OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new-branch"), N_("new unparented branch")), |
3fe735e7 NTND |
1243 | OPT_SET_INT_F('2', "ours", &opts.writeout_stage, |
1244 | N_("checkout our version for unmerged files"), | |
1245 | 2, PARSE_OPT_NONEG), | |
1246 | OPT_SET_INT_F('3', "theirs", &opts.writeout_stage, | |
1247 | N_("checkout their version for unmerged files"), | |
1248 | 3, PARSE_OPT_NONEG), | |
77afafb2 NTND |
1249 | OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"), |
1250 | PARSE_OPT_NOCOMPLETE), | |
d5d09d47 | 1251 | OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")), |
77afafb2 NTND |
1252 | OPT_BOOL_F(0, "overwrite-ignore", &opts.overwrite_ignore, |
1253 | N_("update ignored files (default)"), | |
1254 | PARSE_OPT_NOCOMPLETE), | |
e05a1093 NTND |
1255 | OPT_STRING(0, "conflict", &conflict_style, N_("style"), |
1256 | N_("conflict style (merge or diff3)")), | |
d5d09d47 | 1257 | OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")), |
08d595dc NTND |
1258 | OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree, |
1259 | N_("do not limit pathspecs to sparse entries only")), | |
4741edd5 | 1260 | OPT_HIDDEN_BOOL(0, "guess", &dwim_new_local_branch, |
9c9b4f2f | 1261 | N_("second guess 'git checkout <no-such-branch>'")), |
1d0fa898 NTND |
1262 | OPT_BOOL(0, "ignore-other-worktrees", &opts.ignore_other_worktrees, |
1263 | N_("do not check if another worktree is holding the given ref")), | |
58b75bd6 | 1264 | { OPTION_CALLBACK, 0, "recurse-submodules", NULL, |
1fc458d9 | 1265 | "checkout", "control recursive updating of submodules", |
d7a3803f | 1266 | PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater }, |
870ebdb9 | 1267 | OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")), |
b249b552 | 1268 | OPT_END(), |
782c2d65 DB |
1269 | }; |
1270 | ||
1271 | memset(&opts, 0, sizeof(opts)); | |
c8a3ea1f | 1272 | memset(&new_branch_info, 0, sizeof(new_branch_info)); |
c1d7036b | 1273 | opts.overwrite_ignore = 1; |
e51e3057 | 1274 | opts.prefix = prefix; |
870ebdb9 | 1275 | opts.show_progress = -1; |
782c2d65 | 1276 | |
175f6e59 | 1277 | git_config(git_checkout_config, &opts); |
782c2d65 | 1278 | |
9188ed89 | 1279 | opts.track = BRANCH_TRACK_UNSPECIFIED; |
782c2d65 | 1280 | |
37782920 | 1281 | argc = parse_options(argc, argv, prefix, options, checkout_usage, |
f5242ebf | 1282 | PARSE_OPT_KEEP_DASHDASH); |
859fdaba | 1283 | |
870ebdb9 ECA |
1284 | if (opts.show_progress < 0) { |
1285 | if (opts.quiet) | |
1286 | opts.show_progress = 0; | |
1287 | else | |
1288 | opts.show_progress = isatty(2); | |
1289 | } | |
1290 | ||
b6312c27 NTND |
1291 | if (conflict_style) { |
1292 | opts.merge = 1; /* implied */ | |
1293 | git_xmerge_config("merge.conflictstyle", conflict_style, NULL); | |
1294 | } | |
02ac9837 | 1295 | |
b6312c27 NTND |
1296 | if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1) |
1297 | die(_("-b, -B and --orphan are mutually exclusive")); | |
02ac9837 | 1298 | |
b6312c27 NTND |
1299 | /* |
1300 | * From here on, new_branch will contain the branch to be checked out, | |
1301 | * and new_branch_force and new_orphan_branch will tell us which one of | |
1302 | * -b/-B/--orphan is being used. | |
1303 | */ | |
02ac9837 TRC |
1304 | if (opts.new_branch_force) |
1305 | opts.new_branch = opts.new_branch_force; | |
1306 | ||
b6312c27 NTND |
1307 | if (opts.new_orphan_branch) |
1308 | opts.new_branch = opts.new_orphan_branch; | |
32669671 | 1309 | |
b6312c27 NTND |
1310 | /* --track without -b/-B/--orphan should DWIM */ |
1311 | if (opts.track != BRANCH_TRACK_UNSPECIFIED && !opts.new_branch) { | |
9188ed89 AR |
1312 | const char *argv0 = argv[0]; |
1313 | if (!argc || !strcmp(argv0, "--")) | |
1a07e59c | 1314 | die(_("--track needs a branch name")); |
e3f1da98 RS |
1315 | skip_prefix(argv0, "refs/", &argv0); |
1316 | skip_prefix(argv0, "remotes/", &argv0); | |
9188ed89 AR |
1317 | argv0 = strchr(argv0, '/'); |
1318 | if (!argv0 || !argv0[1]) | |
1a07e59c | 1319 | die(_("missing branch name; try -b")); |
9188ed89 | 1320 | opts.new_branch = argv0 + 1; |
bb0ceb62 JS |
1321 | } |
1322 | ||
859fdaba | 1323 | /* |
09ebad6f JN |
1324 | * Extract branch name from command line arguments, so |
1325 | * all that is left is pathspecs. | |
859fdaba | 1326 | * |
09ebad6f | 1327 | * Handle |
70c9ac2f | 1328 | * |
09ebad6f JN |
1329 | * 1) git checkout <tree> -- [<paths>] |
1330 | * 2) git checkout -- [<paths>] | |
1331 | * 3) git checkout <something> [<paths>] | |
859fdaba | 1332 | * |
09ebad6f JN |
1333 | * including "last branch" syntax and DWIM-ery for names of |
1334 | * remote branches, erroring out for invalid or ambiguous cases. | |
859fdaba | 1335 | */ |
782c2d65 | 1336 | if (argc) { |
60af7691 | 1337 | struct object_id rev; |
09ebad6f | 1338 | int dwim_ok = |
e51e3057 | 1339 | !opts.patch_mode && |
09ebad6f JN |
1340 | dwim_new_local_branch && |
1341 | opts.track == BRANCH_TRACK_UNSPECIFIED && | |
1342 | !opts.new_branch; | |
f8bd36a4 | 1343 | int n = parse_branchname_arg(argc, argv, dwim_ok, |
3c87aa94 ÆAB |
1344 | &new_branch_info, &opts, &rev, |
1345 | &dwim_remotes_matched); | |
09ebad6f JN |
1346 | argv += n; |
1347 | argc -= n; | |
782c2d65 DB |
1348 | } |
1349 | ||
782c2d65 | 1350 | if (argc) { |
480ca644 NTND |
1351 | parse_pathspec(&opts.pathspec, 0, |
1352 | opts.patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0, | |
1353 | prefix, argv); | |
301e42ed | 1354 | |
817b345a | 1355 | if (!opts.pathspec.nr) |
e8a8a4d7 | 1356 | die(_("invalid path specification")); |
301e42ed | 1357 | |
b6312c27 NTND |
1358 | /* |
1359 | * Try to give more helpful suggestion. | |
1360 | * new_branch && argc > 1 will be caught later. | |
1361 | */ | |
1362 | if (opts.new_branch && argc == 1) | |
6c486862 JNA |
1363 | die(_("'%s' is not a commit and a branch '%s' cannot be created from it"), |
1364 | argv[0], opts.new_branch); | |
782c2d65 | 1365 | |
32669671 | 1366 | if (opts.force_detach) |
b6312c27 NTND |
1367 | die(_("git checkout: --detach does not take a path argument '%s'"), |
1368 | argv[0]); | |
32669671 | 1369 | |
0cf8581e | 1370 | if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge) |
b6312c27 NTND |
1371 | die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n" |
1372 | "checking out of the index.")); | |
782c2d65 DB |
1373 | } |
1374 | ||
352eadc4 | 1375 | if (opts.new_branch) { |
f285a2d7 | 1376 | struct strbuf buf = STRBUF_INIT; |
55c4a673 | 1377 | |
bc1c9c0e JH |
1378 | if (opts.new_branch_force) |
1379 | opts.branch_exists = validate_branchname(opts.new_branch, &buf); | |
1380 | else | |
1381 | opts.branch_exists = | |
1382 | validate_new_branchname(opts.new_branch, &buf, 0); | |
352eadc4 DB |
1383 | strbuf_release(&buf); |
1384 | } | |
1385 | ||
886e1084 | 1386 | UNLEAK(opts); |
1c550553 ÆAB |
1387 | if (opts.patch_mode || opts.pathspec.nr) { |
1388 | int ret = checkout_paths(&opts, new_branch_info.name); | |
ad8d5104 ÆAB |
1389 | if (ret && dwim_remotes_matched > 1 && |
1390 | advice_checkout_ambiguous_remote_branch_name) | |
1391 | advise(_("'%s' matched more than one remote tracking branch.\n" | |
1392 | "We found %d remotes with a reference that matched. So we fell back\n" | |
1393 | "on trying to resolve the argument as a path, but failed there too!\n" | |
1394 | "\n" | |
1395 | "If you meant to check out a remote tracking branch on, e.g. 'origin',\n" | |
1396 | "you can do so by fully qualifying the name with the --track option:\n" | |
1397 | "\n" | |
8d7b558b ÆAB |
1398 | " git checkout --track origin/<name>\n" |
1399 | "\n" | |
1400 | "If you'd like to always have checkouts of an ambiguous <name> prefer\n" | |
1401 | "one remote, e.g. the 'origin' remote, consider setting\n" | |
1402 | "checkout.defaultRemote=origin in your config."), | |
ad8d5104 ÆAB |
1403 | argv[0], |
1404 | dwim_remotes_matched); | |
1c550553 ÆAB |
1405 | return ret; |
1406 | } else { | |
c8a3ea1f | 1407 | return checkout_branch(&opts, &new_branch_info); |
1c550553 | 1408 | } |
782c2d65 | 1409 | } |