clone: clone from a repository with relative alternates

Cloning from a local repository blindly copies or hardlinks all the files
under objects/ hierarchy. This results in two issues:

 - If the repository cloned has an "objects/info/alternates" file, and the
   command line of clone specifies --reference, the ones specified on the
   command line get overwritten by the copy from the original repository.

 - An entry in a "objects/info/alternates" file can specify the object
   stores it borrows objects from as a path relative to the "objects/"
   directory. When cloning a repository with such an alternates file, if
   the new repository is not sitting next to the original repository, such
   relative paths needs to be adjusted so that they can be used in the new
   repository.

This updates add_to_alternates_file() to take the path to the alternate
object store, including the "/objects" part at the end (earlier, it was
taking the path to $GIT_DIR and was adding "/objects" itself), as it is
technically possible to specify in objects/info/alternates file the path
of a directory whose name does not end with "/objects".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
3 files changed
tree: b003464caf4a0ad3ac48239062bece4249f140e9
  1. block-sha1/
  2. builtin/
  3. compat/
  4. contrib/
  5. Documentation/
  6. git-gui/
  7. git_remote_helpers/
  8. gitk-git/
  9. gitweb/
  10. perl/
  11. po/
  12. ppc/
  13. t/
  14. templates/
  15. vcs-svn/
  16. xdiff/
  17. .gitattributes
  18. .gitignore
  19. .mailmap
  20. abspath.c
  21. aclocal.m4
  22. advice.c
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  24. alias.c
  25. alloc.c
  26. archive-tar.c
  27. archive-zip.c
  28. archive.c
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  30. attr.c
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  32. base85.c
  33. bisect.c
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  35. blob.c
  36. blob.h
  37. branch.c
  38. branch.h
  39. builtin.h
  40. bundle.c
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  42. cache-tree.c
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  44. cache.h
  45. check-builtins.sh
  46. check-racy.c
  47. check_bindir
  48. color.c
  49. color.h
  50. combine-diff.c
  51. command-list.txt
  52. commit.c
  53. commit.h
  54. config.c
  55. config.mak.in
  56. configure.ac
  57. connect.c
  58. convert.c
  59. copy.c
  60. COPYING
  61. csum-file.c
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  63. ctype.c
  64. daemon.c
  65. date.c
  66. decorate.c
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  68. delta.h
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  73. diff.h
  74. diffcore-break.c
  75. diffcore-delta.c
  76. diffcore-order.c
  77. diffcore-pickaxe.c
  78. diffcore-rename.c
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  80. dir.c
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  83. entry.c
  84. environment.c
  85. exec_cmd.c
  86. exec_cmd.h
  87. fast-import.c
  88. fetch-pack.h
  89. fixup-builtins
  90. fsck.c
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  92. generate-cmdlist.sh
  93. gettext.c
  94. gettext.h
  95. git-add--interactive.perl
  96. git-am.sh
  97. git-archimport.perl
  98. git-bisect.sh
  99. git-compat-util.h
  100. git-cvsexportcommit.perl
  101. git-cvsimport.perl
  102. git-cvsserver.perl
  103. git-difftool--helper.sh
  104. git-difftool.perl
  105. git-filter-branch.sh
  106. git-instaweb.sh
  107. git-lost-found.sh
  108. git-merge-octopus.sh
  109. git-merge-one-file.sh
  110. git-merge-resolve.sh
  111. git-mergetool--lib.sh
  112. git-mergetool.sh
  113. git-parse-remote.sh
  114. git-pull.sh
  115. git-quiltimport.sh
  116. git-rebase--am.sh
  117. git-rebase--interactive.sh
  118. git-rebase--merge.sh
  119. git-rebase.sh
  120. git-relink.perl
  121. git-remote-testgit.py
  122. git-repack.sh
  123. git-request-pull.sh
  124. git-send-email.perl
  125. git-sh-i18n.sh
  126. git-sh-setup.sh
  127. git-stash.sh
  128. git-submodule.sh
  129. git-svn.perl
  130. GIT-VERSION-GEN
  131. git-web--browse.sh
  132. git.c
  133. git.spec.in
  134. graph.c
  135. graph.h
  136. grep.c
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  138. hash.c
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  140. help.c
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  142. hex.c
  143. http-backend.c
  144. http-fetch.c
  145. http-push.c
  146. http-walker.c
  147. http.c
  148. http.h
  149. ident.c
  150. imap-send.c
  151. INSTALL
  152. levenshtein.c
  153. levenshtein.h
  154. LGPL-2.1
  155. list-objects.c
  156. list-objects.h
  157. ll-merge.c
  158. ll-merge.h
  159. lockfile.c
  160. log-tree.c
  161. log-tree.h
  162. mailmap.c
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  164. Makefile
  165. match-trees.c
  166. merge-file.c
  167. merge-file.h
  168. merge-recursive.c
  169. merge-recursive.h
  170. name-hash.c
  171. notes-cache.c
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  173. notes-merge.c
  174. notes-merge.h
  175. notes.c
  176. notes.h
  177. object.c
  178. object.h
  179. pack-check.c
  180. pack-refs.c
  181. pack-refs.h
  182. pack-revindex.c
  183. pack-revindex.h
  184. pack-write.c
  185. pack.h
  186. pager.c
  187. parse-options.c
  188. parse-options.h
  189. patch-delta.c
  190. patch-ids.c
  191. patch-ids.h
  192. path.c
  193. pkt-line.c
  194. pkt-line.h
  195. preload-index.c
  196. pretty.c
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  199. quote.c
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  201. reachable.c
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  203. read-cache.c
  204. README
  205. reflog-walk.c
  206. reflog-walk.h
  207. refs.c
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  209. remote-curl.c
  210. remote.c
  211. remote.h
  212. replace_object.c
  213. rerere.c
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  215. resolve-undo.c
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  217. revision.c
  218. revision.h
  219. run-command.c
  220. run-command.h
  221. send-pack.h
  222. server-info.c
  223. setup.c
  224. sh-i18n--envsubst.c
  225. sha1-array.c
  226. sha1-array.h
  227. sha1-lookup.c
  228. sha1-lookup.h
  229. sha1_file.c
  230. sha1_name.c
  231. shallow.c
  232. shell.c
  233. shortlog.h
  234. show-index.c
  235. sideband.c
  236. sideband.h
  237. sigchain.c
  238. sigchain.h
  239. strbuf.c
  240. strbuf.h
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  242. string-list.h
  243. submodule.c
  244. submodule.h
  245. symlinks.c
  246. tag.c
  247. tag.h
  248. tar.h
  249. test-chmtime.c
  250. test-ctype.c
  251. test-date.c
  252. test-delta.c
  253. test-dump-cache-tree.c
  254. test-genrandom.c
  255. test-index-version.c
  256. test-line-buffer.c
  257. test-match-trees.c
  258. test-mktemp.c
  259. test-obj-pool.c
  260. test-parse-options.c
  261. test-path-utils.c
  262. test-run-command.c
  263. test-sha1.c
  264. test-sha1.sh
  265. test-sigchain.c
  266. test-string-pool.c
  267. test-subprocess.c
  268. test-svn-fe.c
  269. test-treap.c
  270. thread-utils.c
  271. thread-utils.h
  272. trace.c
  273. transport-helper.c
  274. transport.c
  275. transport.h
  276. tree-diff.c
  277. tree-walk.c
  278. tree-walk.h
  279. tree.c
  280. tree.h
  281. unimplemented.sh
  282. unpack-trees.c
  283. unpack-trees.h
  284. upload-pack.c
  285. url.c
  286. url.h
  287. usage.c
  288. userdiff.c
  289. userdiff.h
  290. utf8.c
  291. utf8.h
  292. walker.c
  293. walker.h
  294. wrap-for-bin.sh
  295. wrapper.c
  296. write_or_die.c
  297. ws.c
  298. wt-status.c
  299. wt-status.h
  300. xdiff-interface.c
  301. xdiff-interface.h
  302. zlib.c