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[PATCH v5 03/11] Documentation: document post-rewrite hook

From
Thomas Rast <trast@student.ethz.ch>
Date
Feb 23, 2010, 00:42 UTC
Message-ID
<3ecc609fab67bb7c5dfbad097c469056148fab53.1266885599.git.trast@student.ethz.ch>
In-Reply-To
<cover.1266885599.git.trast@student.ethz.ch>

This defines the behaviour of the post-rewrite hook support, which will be implemented in the following patches.

We deliberately do not document how often the hook will be invoked per rewriting command, but the interface is designed to keep that at "once". This would currently not matter too much, since both rebase and filter-branch are shellscripts and spawn many processes anyway. However, when a fast sequencer in C is implemented, it will be beneficial to only have to run the hook once.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
---
* adapt docs to the fact that git-filter-branch doesn't call the hook
  in this series
* specify commit ordering for rebase
 Documentation/githooks.txt |   34 ++++++++++++++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/Documentation/githooks.txt b/Documentation/githooks.txt
index 87e2c03..a741769 100644
--- a/Documentation/githooks.txt
+++ b/Documentation/githooks.txt
@@ -317,6 +317,40 @@ This hook is invoked by 'git gc --auto'. It takes no parameter, and
 exiting with non-zero status from this script causes the 'git gc --auto'
 to abort.
 
+post-rewrite
+~~~~~~~~~~~~
+
+This hook is invoked by commands that rewrite commits (`git commit
+--amend`, 'git-rebase'; currently 'git-filter-branch' does 'not' call
+it!).  Its first argument denotes the command it was invoked by:
+currently one of `amend` or `rebase`.  Further command-dependent
+arguments may be passed in the future.
+
+The hook receives a list of the rewritten commits on stdin, in the
+format
+
+  <old-sha1> SP <new-sha1> [ SP <extra-info> ] LF
+
+The 'extra-info' is again command-dependent.  If it is empty, the
+preceding SP is also omitted.  Currently, no commands pass any
+'extra-info'.
+
+The following command-specific comments apply:
+
+rebase::
+	For the 'squash' and 'fixup' operation, all commits that were
+	squashed are listed as being rewritten to the squashed commit.
+	This means that there will be several lines sharing the same
+	'new-sha1'.
++
+The commits are guaranteed to be listed in the order that they were
+processed by rebase.
+
+There is no default 'post-rewrite' hook, but see the
+`post-receive-copy-notes` script in `contrib/hooks` for an example
+that copies your git-notes to the rewritten commits.
+
+
 GIT
 ---
 Part of the linkgit:git[1] suite
-- 
1.7.0.218.g73a398
Previous: Thomas RastNext: Thomas Rast
Message 32 of 66 in “several notes refs, post-rewrite, notes rewriting”
  1. 00/12 several notes refs, post-rewrite, notes rewritingThomas Rast, Feb 20, 2010
  2. 01/12 Support showing notes from more than one notes treeThomas Rast, Feb 20, 2010
  3. Junio C HamanoFeb 21, 2010
  4. 02/12 Documentation: document post-rewrite hookThomas Rast, Feb 20, 2010
  5. 03/12 commit --amend: invoke post-rewrite hookThomas Rast, Feb 20, 2010
  6. Junio C HamanoFeb 21, 2010
  7. 04/12 rebase: invoke post-rewrite hookThomas Rast, Feb 20, 2010
  8. 05/12 rebase -i: invoke post-rewrite hookThomas Rast, Feb 20, 2010
  9. 06/12 notes: implement 'git notes copy --stdin'Thomas Rast, Feb 20, 2010
  10. Junio C HamanoFeb 21, 2010
  11. 07/12 notes: implement helpers needed for note copying during rewriteThomas Rast, Feb 20, 2010
  12. Junio C HamanoFeb 21, 2010
  13. 08/12 rebase: support automatic notes copyingThomas Rast, Feb 20, 2010
  14. 09/12 commit --amend: copy notes to the new commitThomas Rast, Feb 20, 2010
  15. 10/12 filter-branch: invoke post-rewrite hookThomas Rast, Feb 20, 2010
  16. 11/12 filter-branch: learn how to filter notesThomas Rast, Feb 20, 2010
  17. 12/12 notes: add shorthand --ref to override GIT_NOTES_REFThomas Rast, Feb 20, 2010
  18. Junio C HamanoFeb 21, 2010
  19. Thomas RastFeb 21, 2010
  20. Junio C HamanoFeb 22, 2010
  21. 00/11 several notes refs, post-rewrite, notes rewritingThomas Rast, Feb 23, 2010
  22. 01/11 test-lib: unset GIT_NOTES_REF to stop it from influencing testsThomas Rast, Feb 23, 2010
  23. 02/11 Support showing notes from more than one notes treeThomas Rast, Feb 23, 2010
  24. Junio C HamanoFeb 23, 2010
  25. Thomas RastFeb 23, 2010
  26. format-patch: learn to fill comment section of email from notesThomas Rast, Feb 23, 2010
  27. BROKEN -- format-patch: learn to fill comment section of email from notesThomas Rast, Feb 23, 2010
  28. Thomas RastFeb 23, 2010
  29. Stephen BoydFeb 24, 2010
  30. Junio C HamanoFeb 23, 2010
  31. Thomas RastMar 10, 2010
  32. 03/11 Documentation: document post-rewrite hookThomas Rast, Feb 23, 2010
  33. 04/11 commit --amend: invoke post-rewrite hookThomas Rast, Feb 23, 2010
  34. 05/11 rebase: invoke post-rewrite hookThomas Rast, Feb 23, 2010
  35. 06/11 rebase -i: invoke post-rewrite hookThomas Rast, Feb 23, 2010
  36. Junio C HamanoFeb 24, 2010
  37. 07/11 notes: implement 'git notes copy --stdin'Thomas Rast, Feb 23, 2010
  38. 08/11 notes: implement helpers needed for note copying during rewriteThomas Rast, Feb 23, 2010
  39. 09/11 rebase: support automatic notes copyingThomas Rast, Feb 23, 2010
  40. Junio C HamanoFeb 25, 2010
  41. 00/13 several notes refs, post-rewrite, notes rewritingThomas Rast, Mar 10, 2010
  42. 01/13 test-lib: unset GIT_NOTES_REF to stop it from influencing testsThomas Rast, Mar 10, 2010
  43. Johan HerlandMar 11, 2010
  44. 02/13 Support showing notes from more than one notes treeThomas Rast, Mar 10, 2010
  45. Johan HerlandMar 11, 2010
  46. 03/13 Documentation: document post-rewrite hookThomas Rast, Mar 10, 2010
  47. 04/13 commit --amend: invoke post-rewrite hookThomas Rast, Mar 10, 2010
  48. 05/13 rebase: invoke post-rewrite hookThomas Rast, Mar 10, 2010
  49. 06/13 rebase -i: invoke post-rewrite hookThomas Rast, Mar 10, 2010
  50. 07/13 notes: implement 'git notes copy --stdin'Thomas Rast, Mar 10, 2010
  51. Johan HerlandMar 11, 2010
  52. 08/13 notes: implement helpers needed for note copying during rewriteThomas Rast, Mar 10, 2010
  53. Johan HerlandMar 11, 2010
  54. 09/13 rebase: support automatic notes copyingThomas Rast, Mar 10, 2010
  55. 10/13 commit --amend: copy notes to the new commitThomas Rast, Mar 10, 2010
  56. 11/13 notes: add shorthand --ref to override GIT_NOTES_REFThomas Rast, Mar 10, 2010
  57. Johan HerlandMar 11, 2010
  58. 12/13 notes: track whether notes_trees were changed at allThomas Rast, Mar 10, 2010
  59. Johan HerlandMar 11, 2010
  60. 13/13 git-notes(1): add a section about the meaning of historyThomas Rast, Mar 10, 2010
  61. Johan HerlandMar 11, 2010
  62. Junio C HamanoMar 10, 2010
  63. 10/11 commit --amend: copy notes to the new commitThomas Rast, Feb 23, 2010
  64. 11/11 notes: add shorthand --ref to override GIT_NOTES_REFThomas Rast, Feb 23, 2010
  65. Junio C HamanoFeb 23, 2010
  66. Thomas RastFeb 23, 2010

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