rebase -i: fix misleading error message after 'exec no-such' instruction

When the todo sheet of interactive rebase instructs to run a non-existing
command, the operation stops with the following error:

  Execution failed: no-such
  You can fix the problem, and then run

          git rebase --continue

  fatal: 'rebase' appears to be a git command, but we were not
  able to execute it. Maybe git-rebase is broken?

The reason is that the shell that attempted to run the command exits with
code 127. rebase--interactive just forwards this code to the caller (the
git wrapper). But our smart run-command infrastructure detects this
special exit code and turns it into ENOENT, which in turn is interpreted
by the git wrapper as if the external command that it just executed did
not exist. This is finally translated to the misleading last two lines in
error message cited above.

Fix it by translating the error code before it is forwarded.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2 files changed
tree: 6c020d73cfa030843f10b969fc37224a5600ffc4
  1. block-sha1/
  2. builtin/
  3. compat/
  4. contrib/
  5. Documentation/
  6. git-gui/
  7. git_remote_helpers/
  8. gitk-git/
  9. gitweb/
  10. mergetools/
  11. perl/
  12. po/
  13. ppc/
  14. t/
  15. templates/
  16. vcs-svn/
  17. xdiff/
  18. .gitattributes
  19. .gitignore
  20. .mailmap
  21. abspath.c
  22. aclocal.m4
  23. advice.c
  24. advice.h
  25. alias.c
  26. alloc.c
  27. archive-tar.c
  28. archive-zip.c
  29. archive.c
  30. archive.h
  31. argv-array.c
  32. argv-array.h
  33. attr.c
  34. attr.h
  35. base85.c
  36. bisect.c
  37. bisect.h
  38. blob.c
  39. blob.h
  40. branch.c
  41. branch.h
  42. builtin.h
  43. bulk-checkin.c
  44. bulk-checkin.h
  45. bundle.c
  46. bundle.h
  47. cache-tree.c
  48. cache-tree.h
  49. cache.h
  50. check-builtins.sh
  51. check-racy.c
  52. check_bindir
  53. color.c
  54. color.h
  55. column.c
  56. column.h
  57. combine-diff.c
  58. command-list.txt
  59. commit.c
  60. commit.h
  61. config.c
  62. config.mak.in
  63. configure.ac
  64. connect.c
  65. connected.c
  66. connected.h
  67. convert.c
  68. convert.h
  69. copy.c
  70. COPYING
  71. credential-cache--daemon.c
  72. credential-cache.c
  73. credential-store.c
  74. credential.c
  75. credential.h
  76. csum-file.c
  77. csum-file.h
  78. ctype.c
  79. daemon.c
  80. date.c
  81. decorate.c
  82. decorate.h
  83. delta.h
  84. diff-delta.c
  85. diff-lib.c
  86. diff-no-index.c
  87. diff.c
  88. diff.h
  89. diffcore-break.c
  90. diffcore-delta.c
  91. diffcore-order.c
  92. diffcore-pickaxe.c
  93. diffcore-rename.c
  94. diffcore.h
  95. dir.c
  96. dir.h
  97. editor.c
  98. entry.c
  99. environment.c
  100. exec_cmd.c
  101. exec_cmd.h
  102. fast-import.c
  103. fetch-pack.h
  104. fixup-builtins
  105. fmt-merge-msg.h
  106. fsck.c
  107. fsck.h
  108. generate-cmdlist.sh
  109. gettext.c
  110. gettext.h
  111. git-add--interactive.perl
  112. git-am.sh
  113. git-archimport.perl
  114. git-bisect.sh
  115. git-compat-util.h
  116. git-cvsexportcommit.perl
  117. git-cvsimport.perl
  118. git-cvsserver.perl
  119. git-difftool--helper.sh
  120. git-difftool.perl
  121. git-filter-branch.sh
  122. git-instaweb.sh
  123. git-lost-found.sh
  124. git-merge-octopus.sh
  125. git-merge-one-file.sh
  126. git-merge-resolve.sh
  127. git-mergetool--lib.sh
  128. git-mergetool.sh
  129. git-p4.py
  130. git-parse-remote.sh
  131. git-pull.sh
  132. git-quiltimport.sh
  133. git-rebase--am.sh
  134. git-rebase--interactive.sh
  135. git-rebase--merge.sh
  136. git-rebase.sh
  137. git-relink.perl
  138. git-remote-testgit.py
  139. git-repack.sh
  140. git-request-pull.sh
  141. git-send-email.perl
  142. git-sh-i18n.sh
  143. git-sh-setup.sh
  144. git-stash.sh
  145. git-submodule.sh
  146. git-svn.perl
  147. GIT-VERSION-GEN
  148. git-web--browse.sh
  149. git.c
  150. git.spec.in
  151. gpg-interface.c
  152. gpg-interface.h
  153. graph.c
  154. graph.h
  155. grep.c
  156. grep.h
  157. hash.c
  158. hash.h
  159. help.c
  160. help.h
  161. hex.c
  162. http-backend.c
  163. http-fetch.c
  164. http-push.c
  165. http-walker.c
  166. http.c
  167. http.h
  168. ident.c
  169. imap-send.c
  170. INSTALL
  171. kwset.c
  172. kwset.h
  173. levenshtein.c
  174. levenshtein.h
  175. LGPL-2.1
  176. list-objects.c
  177. list-objects.h
  178. ll-merge.c
  179. ll-merge.h
  180. lockfile.c
  181. log-tree.c
  182. log-tree.h
  183. mailmap.c
  184. mailmap.h
  185. Makefile
  186. match-trees.c
  187. merge-file.c
  188. merge-file.h
  189. merge-recursive.c
  190. merge-recursive.h
  191. mergesort.c
  192. mergesort.h
  193. name-hash.c
  194. notes-cache.c
  195. notes-cache.h
  196. notes-merge.c
  197. notes-merge.h
  198. notes.c
  199. notes.h
  200. object.c
  201. object.h
  202. pack-check.c
  203. pack-refs.c
  204. pack-refs.h
  205. pack-revindex.c
  206. pack-revindex.h
  207. pack-write.c
  208. pack.h
  209. pager.c
  210. parse-options-cb.c
  211. parse-options.c
  212. parse-options.h
  213. patch-delta.c
  214. patch-ids.c
  215. patch-ids.h
  216. path.c
  217. pkt-line.c
  218. pkt-line.h
  219. preload-index.c
  220. pretty.c
  221. progress.c
  222. progress.h
  223. prompt.c
  224. prompt.h
  225. quote.c
  226. quote.h
  227. reachable.c
  228. reachable.h
  229. read-cache.c
  230. README
  231. reflog-walk.c
  232. reflog-walk.h
  233. refs.c
  234. refs.h
  235. remote-curl.c
  236. remote.c
  237. remote.h
  238. replace_object.c
  239. rerere.c
  240. rerere.h
  241. resolve-undo.c
  242. resolve-undo.h
  243. revision.c
  244. revision.h
  245. run-command.c
  246. run-command.h
  247. send-pack.h
  248. sequencer.c
  249. sequencer.h
  250. server-info.c
  251. setup.c
  252. sh-i18n--envsubst.c
  253. sha1-array.c
  254. sha1-array.h
  255. sha1-lookup.c
  256. sha1-lookup.h
  257. sha1_file.c
  258. sha1_name.c
  259. shallow.c
  260. shell.c
  261. shortlog.h
  262. show-index.c
  263. sideband.c
  264. sideband.h
  265. sigchain.c
  266. sigchain.h
  267. strbuf.c
  268. strbuf.h
  269. streaming.c
  270. streaming.h
  271. string-list.c
  272. string-list.h
  273. submodule.c
  274. submodule.h
  275. symlinks.c
  276. tag.c
  277. tag.h
  278. tar.h
  279. test-chmtime.c
  280. test-ctype.c
  281. test-date.c
  282. test-delta.c
  283. test-dump-cache-tree.c
  284. test-genrandom.c
  285. test-index-version.c
  286. test-line-buffer.c
  287. test-match-trees.c
  288. test-mergesort.c
  289. test-mktemp.c
  290. test-parse-options.c
  291. test-path-utils.c
  292. test-regex.c
  293. test-revision-walking.c
  294. test-run-command.c
  295. test-scrap-cache-tree.c
  296. test-sha1.c
  297. test-sha1.sh
  298. test-sigchain.c
  299. test-subprocess.c
  300. test-svn-fe.c
  301. thread-utils.c
  302. thread-utils.h
  303. trace.c
  304. transport-helper.c
  305. transport.c
  306. transport.h
  307. tree-diff.c
  308. tree-walk.c
  309. tree-walk.h
  310. tree.c
  311. tree.h
  312. unimplemented.sh
  313. unix-socket.c
  314. unix-socket.h
  315. unpack-trees.c
  316. unpack-trees.h
  317. upload-pack.c
  318. url.c
  319. url.h
  320. usage.c
  321. userdiff.c
  322. userdiff.h
  323. utf8.c
  324. utf8.h
  325. varint.c
  326. varint.h
  327. version.c
  328. version.h
  329. walker.c
  330. walker.h
  331. wrap-for-bin.sh
  332. wrapper.c
  333. write_or_die.c
  334. ws.c
  335. wt-status.c
  336. wt-status.h
  337. xdiff-interface.c
  338. xdiff-interface.h
  339. zlib.c