Merge branch 'bc/object-id'

Conversion from uchar[20] to struct object_id continues.

* bc/object-id: (42 commits)
  merge-one-file: compute empty blob object ID
  add--interactive: compute the empty tree value
  Update shell scripts to compute empty tree object ID
  sha1_file: only expose empty object constants through git_hash_algo
  dir: use the_hash_algo for empty blob object ID
  sequencer: use the_hash_algo for empty tree object ID
  cache-tree: use is_empty_tree_oid
  sha1_file: convert cached object code to struct object_id
  builtin/reset: convert use of EMPTY_TREE_SHA1_BIN
  builtin/receive-pack: convert one use of EMPTY_TREE_SHA1_HEX
  wt-status: convert two uses of EMPTY_TREE_SHA1_HEX
  submodule: convert several uses of EMPTY_TREE_SHA1_HEX
  sequencer: convert one use of EMPTY_TREE_SHA1_HEX
  merge: convert empty tree constant to the_hash_algo
  builtin/merge: switch tree functions to use object_id
  builtin/am: convert uses of EMPTY_TREE_SHA1_BIN to the_hash_algo
  sha1-file: add functions for hex empty tree and blob OIDs
  builtin/receive-pack: avoid hard-coded constants for push certs
  diff: specify abbreviation size in terms of the_hash_algo
  upload-pack: replace use of several hard-coded constants
  ...
tree: dce3eb119c51e3d539f5a703411787d3a333b175
  1. .github/
  2. block-sha1/
  3. builtin/
  4. ci/
  5. compat/
  6. contrib/
  7. Documentation/
  8. ewah/
  9. git-gui/
  10. gitk-git/
  11. gitweb/
  12. mergetools/
  13. perl/
  14. po/
  15. ppc/
  16. refs/
  17. sha1dc/
  18. t/
  19. templates/
  20. vcs-svn/
  21. xdiff/
  22. .clang-format
  23. .gitattributes
  24. .gitignore
  25. .gitmodules
  26. .mailmap
  27. .travis.yml
  28. .tsan-suppressions
  29. abspath.c
  30. aclocal.m4
  31. advice.c
  32. advice.h
  33. alias.c
  34. alloc.c
  35. apply.c
  36. apply.h
  37. archive-tar.c
  38. archive-zip.c
  39. archive.c
  40. archive.h
  41. argv-array.c
  42. argv-array.h
  43. attr.c
  44. attr.h
  45. base85.c
  46. bisect.c
  47. bisect.h
  48. blame.c
  49. blame.h
  50. blob.c
  51. blob.h
  52. branch.c
  53. branch.h
  54. builtin.h
  55. bulk-checkin.c
  56. bulk-checkin.h
  57. bundle.c
  58. bundle.h
  59. cache-tree.c
  60. cache-tree.h
  61. cache.h
  62. chdir-notify.c
  63. chdir-notify.h
  64. check-builtins.sh
  65. check-racy.c
  66. check_bindir
  67. checkout.c
  68. checkout.h
  69. color.c
  70. color.h
  71. column.c
  72. column.h
  73. combine-diff.c
  74. command-list.txt
  75. commit-graph.c
  76. commit-graph.h
  77. commit-slab.h
  78. commit.c
  79. commit.h
  80. common-main.c
  81. config.c
  82. config.h
  83. config.mak.dev
  84. config.mak.in
  85. config.mak.uname
  86. configure.ac
  87. connect.c
  88. connect.h
  89. connected.c
  90. connected.h
  91. convert.c
  92. convert.h
  93. copy.c
  94. COPYING
  95. credential-cache--daemon.c
  96. credential-cache.c
  97. credential-store.c
  98. credential.c
  99. credential.h
  100. csum-file.c
  101. csum-file.h
  102. ctype.c
  103. daemon.c
  104. date.c
  105. decorate.c
  106. decorate.h
  107. delta.h
  108. detect-compiler
  109. diff-delta.c
  110. diff-lib.c
  111. diff-no-index.c
  112. diff.c
  113. diff.h
  114. diffcore-break.c
  115. diffcore-delta.c
  116. diffcore-order.c
  117. diffcore-pickaxe.c
  118. diffcore-rename.c
  119. diffcore.h
  120. dir-iterator.c
  121. dir-iterator.h
  122. dir.c
  123. dir.h
  124. editor.c
  125. entry.c
  126. environment.c
  127. exec-cmd.c
  128. exec-cmd.h
  129. fast-import.c
  130. fetch-object.c
  131. fetch-object.h
  132. fetch-pack.c
  133. fetch-pack.h
  134. fmt-merge-msg.h
  135. fsck.c
  136. fsck.h
  137. fsmonitor.c
  138. fsmonitor.h
  139. generate-cmdlist.sh
  140. gettext.c
  141. gettext.h
  142. git-add--interactive.perl
  143. git-archimport.perl
  144. git-bisect.sh
  145. git-compat-util.h
  146. git-cvsexportcommit.perl
  147. git-cvsimport.perl
  148. git-cvsserver.perl
  149. git-difftool--helper.sh
  150. git-filter-branch.sh
  151. git-instaweb.sh
  152. git-merge-octopus.sh
  153. git-merge-one-file.sh
  154. git-merge-resolve.sh
  155. git-mergetool--lib.sh
  156. git-mergetool.sh
  157. git-p4.py
  158. git-parse-remote.sh
  159. git-quiltimport.sh
  160. git-rebase--am.sh
  161. git-rebase--interactive.sh
  162. git-rebase--merge.sh
  163. git-rebase.sh
  164. git-remote-testgit.sh
  165. git-request-pull.sh
  166. git-send-email.perl
  167. git-sh-i18n.sh
  168. git-sh-setup.sh
  169. git-stash.sh
  170. git-submodule.sh
  171. git-svn.perl
  172. GIT-VERSION-GEN
  173. git-web--browse.sh
  174. git.c
  175. git.rc
  176. gpg-interface.c
  177. gpg-interface.h
  178. graph.c
  179. graph.h
  180. grep.c
  181. grep.h
  182. hash.h
  183. hashmap.c
  184. hashmap.h
  185. help.c
  186. help.h
  187. hex.c
  188. http-backend.c
  189. http-fetch.c
  190. http-push.c
  191. http-walker.c
  192. http.c
  193. http.h
  194. ident.c
  195. imap-send.c
  196. INSTALL
  197. iterator.h
  198. khash.h
  199. kwset.c
  200. kwset.h
  201. levenshtein.c
  202. levenshtein.h
  203. LGPL-2.1
  204. line-log.c
  205. line-log.h
  206. line-range.c
  207. line-range.h
  208. list-objects-filter-options.c
  209. list-objects-filter-options.h
  210. list-objects-filter.c
  211. list-objects-filter.h
  212. list-objects.c
  213. list-objects.h
  214. list.h
  215. ll-merge.c
  216. ll-merge.h
  217. lockfile.c
  218. lockfile.h
  219. log-tree.c
  220. log-tree.h
  221. ls-refs.c
  222. ls-refs.h
  223. mailinfo.c
  224. mailinfo.h
  225. mailmap.c
  226. mailmap.h
  227. Makefile
  228. match-trees.c
  229. mem-pool.c
  230. mem-pool.h
  231. merge-blobs.c
  232. merge-blobs.h
  233. merge-recursive.c
  234. merge-recursive.h
  235. merge.c
  236. mergesort.c
  237. mergesort.h
  238. name-hash.c
  239. notes-cache.c
  240. notes-cache.h
  241. notes-merge.c
  242. notes-merge.h
  243. notes-utils.c
  244. notes-utils.h
  245. notes.c
  246. notes.h
  247. object-store.h
  248. object.c
  249. object.h
  250. oidmap.c
  251. oidmap.h
  252. oidset.c
  253. oidset.h
  254. pack-bitmap-write.c
  255. pack-bitmap.c
  256. pack-bitmap.h
  257. pack-check.c
  258. pack-objects.c
  259. pack-objects.h
  260. pack-revindex.c
  261. pack-revindex.h
  262. pack-write.c
  263. pack.h
  264. packfile.c
  265. packfile.h
  266. pager.c
  267. parse-options-cb.c
  268. parse-options.c
  269. parse-options.h
  270. patch-delta.c
  271. patch-ids.c
  272. patch-ids.h
  273. path.c
  274. path.h
  275. pathspec.c
  276. pathspec.h
  277. pkt-line.c
  278. pkt-line.h
  279. preload-index.c
  280. pretty.c
  281. pretty.h
  282. prio-queue.c
  283. prio-queue.h
  284. progress.c
  285. progress.h
  286. prompt.c
  287. prompt.h
  288. protocol.c
  289. protocol.h
  290. quote.c
  291. quote.h
  292. reachable.c
  293. reachable.h
  294. read-cache.c
  295. README.md
  296. ref-filter.c
  297. ref-filter.h
  298. reflog-walk.c
  299. reflog-walk.h
  300. refs.c
  301. refs.h
  302. remote-curl.c
  303. remote-testsvn.c
  304. remote.c
  305. remote.h
  306. replace-object.c
  307. replace-object.h
  308. repository.c
  309. repository.h
  310. rerere.c
  311. rerere.h
  312. resolve-undo.c
  313. resolve-undo.h
  314. revision.c
  315. revision.h
  316. run-command.c
  317. run-command.h
  318. send-pack.c
  319. send-pack.h
  320. sequencer.c
  321. sequencer.h
  322. serve.c
  323. serve.h
  324. server-info.c
  325. setup.c
  326. sh-i18n--envsubst.c
  327. sha1-array.c
  328. sha1-array.h
  329. sha1-file.c
  330. sha1-lookup.c
  331. sha1-lookup.h
  332. sha1-name.c
  333. sha1dc_git.c
  334. sha1dc_git.h
  335. shallow.c
  336. shell.c
  337. shortlog.h
  338. show-index.c
  339. sideband.c
  340. sideband.h
  341. sigchain.c
  342. sigchain.h
  343. split-index.c
  344. split-index.h
  345. strbuf.c
  346. strbuf.h
  347. streaming.c
  348. streaming.h
  349. string-list.c
  350. string-list.h
  351. sub-process.c
  352. sub-process.h
  353. submodule-config.c
  354. submodule-config.h
  355. submodule.c
  356. submodule.h
  357. symlinks.c
  358. tag.c
  359. tag.h
  360. tar.h
  361. tempfile.c
  362. tempfile.h
  363. thread-utils.c
  364. thread-utils.h
  365. tmp-objdir.c
  366. tmp-objdir.h
  367. trace.c
  368. trace.h
  369. trailer.c
  370. trailer.h
  371. transport-helper.c
  372. transport-internal.h
  373. transport.c
  374. transport.h
  375. tree-diff.c
  376. tree-walk.c
  377. tree-walk.h
  378. tree.c
  379. tree.h
  380. unicode-width.h
  381. unimplemented.sh
  382. unix-socket.c
  383. unix-socket.h
  384. unpack-trees.c
  385. unpack-trees.h
  386. upload-pack.c
  387. upload-pack.h
  388. url.c
  389. url.h
  390. urlmatch.c
  391. urlmatch.h
  392. usage.c
  393. userdiff.c
  394. userdiff.h
  395. utf8.c
  396. utf8.h
  397. varint.c
  398. varint.h
  399. version.c
  400. version.h
  401. versioncmp.c
  402. walker.c
  403. walker.h
  404. wildmatch.c
  405. wildmatch.h
  406. worktree.c
  407. worktree.h
  408. wrap-for-bin.sh
  409. wrapper.c
  410. write-or-die.c
  411. ws.c
  412. wt-status.c
  413. wt-status.h
  414. xdiff-interface.c
  415. xdiff-interface.h
  416. zlib.c
README.md

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just “subscribe git” in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the “What's cooking” reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name “git” was given by Linus Torvalds when he wrote the very first version. He described the tool as “the stupid content tracker” and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of “get” may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • “global information tracker”: you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • “goddamn idiotic truckload of sh*t”: when it breaks