fix overstrict :<path> diagnosis

Given "git log :", we get a disambiguation message that tries to be
helpful and yet totally misses the point, i.e.

    $ git log :
    fatal: Path '' does not exist (neither on disk nor in the index).
    $ git log :/
    fatal: Path '/' exists on disk, but not in the index.

An empty path nor anything that begins with '/' cannot possibly in the
index, and it is wrong to guess that the user might have meant to access
such an index entry.

It should yield the same error message as "git log '*.c'", i.e.

    $ git log '*.c'
    fatal: ambiguous argument '*.c': unknown revision or path not in the working tree.
    Use '--' to separate paths from revisions

Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 file changed
tree: c68993d523b60c297c80770dafe2a820a8fbaf6b
  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
  23. advice.h
  24. alias.c
  25. alloc.c
  26. archive-tar.c
  27. archive-zip.c
  28. archive.c
  29. archive.h
  30. attr.c
  31. attr.h
  32. base85.c
  33. bisect.c
  34. bisect.h
  35. blob.c
  36. blob.h
  37. branch.c
  38. branch.h
  39. builtin.h
  40. bundle.c
  41. bundle.h
  42. cache-tree.c
  43. cache-tree.h
  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
  62. csum-file.h
  63. ctype.c
  64. daemon.c
  65. date.c
  66. decorate.c
  67. decorate.h
  68. delta.h
  69. diff-delta.c
  70. diff-lib.c
  71. diff-no-index.c
  72. diff.c
  73. diff.h
  74. diffcore-break.c
  75. diffcore-delta.c
  76. diffcore-order.c
  77. diffcore-pickaxe.c
  78. diffcore-rename.c
  79. diffcore.h
  80. dir.c
  81. dir.h
  82. editor.c
  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
  91. fsck.h
  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--interactive.sh
  117. git-rebase.sh
  118. git-relink.perl
  119. git-remote-testgit.py
  120. git-repack.sh
  121. git-request-pull.sh
  122. git-send-email.perl
  123. git-sh-setup.sh
  124. git-stash.sh
  125. git-submodule.sh
  126. git-svn.perl
  127. GIT-VERSION-GEN
  128. git-web--browse.sh
  129. git.c
  130. git.spec.in
  131. graph.c
  132. graph.h
  133. grep.c
  134. grep.h
  135. hash.c
  136. hash.h
  137. help.c
  138. help.h
  139. hex.c
  140. http-backend.c
  141. http-fetch.c
  142. http-push.c
  143. http-walker.c
  144. http.c
  145. http.h
  146. ident.c
  147. imap-send.c
  148. INSTALL
  149. levenshtein.c
  150. levenshtein.h
  151. list-objects.c
  152. list-objects.h
  153. ll-merge.c
  154. ll-merge.h
  155. lockfile.c
  156. log-tree.c
  157. log-tree.h
  158. mailmap.c
  159. mailmap.h
  160. Makefile
  161. match-trees.c
  162. merge-file.c
  163. merge-recursive.c
  164. merge-recursive.h
  165. name-hash.c
  166. notes-cache.c
  167. notes-cache.h
  168. notes-merge.c
  169. notes-merge.h
  170. notes.c
  171. notes.h
  172. object.c
  173. object.h
  174. pack-check.c
  175. pack-refs.c
  176. pack-refs.h
  177. pack-revindex.c
  178. pack-revindex.h
  179. pack-write.c
  180. pack.h
  181. pager.c
  182. parse-options.c
  183. parse-options.h
  184. patch-delta.c
  185. patch-ids.c
  186. patch-ids.h
  187. path.c
  188. pkt-line.c
  189. pkt-line.h
  190. preload-index.c
  191. pretty.c
  192. progress.c
  193. progress.h
  194. quote.c
  195. quote.h
  196. reachable.c
  197. reachable.h
  198. read-cache.c
  199. README
  200. reflog-walk.c
  201. reflog-walk.h
  202. refs.c
  203. refs.h
  204. remote-curl.c
  205. remote.c
  206. remote.h
  207. replace_object.c
  208. rerere.c
  209. rerere.h
  210. resolve-undo.c
  211. resolve-undo.h
  212. revision.c
  213. revision.h
  214. run-command.c
  215. run-command.h
  216. send-pack.h
  217. server-info.c
  218. setup.c
  219. sha1-lookup.c
  220. sha1-lookup.h
  221. sha1_file.c
  222. sha1_name.c
  223. shallow.c
  224. shell.c
  225. shortlog.h
  226. show-index.c
  227. sideband.c
  228. sideband.h
  229. sigchain.c
  230. sigchain.h
  231. strbuf.c
  232. strbuf.h
  233. string-list.c
  234. string-list.h
  235. submodule.c
  236. submodule.h
  237. symlinks.c
  238. tag.c
  239. tag.h
  240. tar.h
  241. test-chmtime.c
  242. test-ctype.c
  243. test-date.c
  244. test-delta.c
  245. test-dump-cache-tree.c
  246. test-genrandom.c
  247. test-index-version.c
  248. test-line-buffer.c
  249. test-match-trees.c
  250. test-mktemp.c
  251. test-obj-pool.c
  252. test-parse-options.c
  253. test-path-utils.c
  254. test-run-command.c
  255. test-sha1.c
  256. test-sha1.sh
  257. test-sigchain.c
  258. test-string-pool.c
  259. test-subprocess.c
  260. test-svn-fe.c
  261. test-treap.c
  262. thread-utils.c
  263. thread-utils.h
  264. trace.c
  265. transport-helper.c
  266. transport.c
  267. transport.h
  268. tree-diff.c
  269. tree-walk.c
  270. tree-walk.h
  271. tree.c
  272. tree.h
  273. unimplemented.sh
  274. unpack-trees.c
  275. unpack-trees.h
  276. upload-pack.c
  277. url.c
  278. url.h
  279. usage.c
  280. userdiff.c
  281. userdiff.h
  282. utf8.c
  283. utf8.h
  284. walker.c
  285. walker.h
  286. wrap-for-bin.sh
  287. wrapper.c
  288. write_or_die.c
  289. ws.c
  290. wt-status.c
  291. wt-status.h
  292. xdiff-interface.c
  293. xdiff-interface.h
  294. zlib.c