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Re: [PATCH 04/17] add_to_alternates_file: don't add duplicate entries

From
Jeff King <peff@peff.net>
Date
Aug 11, 2015, 09:54 UTC
Message-ID
<20150811095435.GC10238@sigill.intra.peff.net>
In-Reply-To
<55C97354.7080008@alum.mit.edu>
On Tue, Aug 11, 2015 at 06:00:20AM +0200, Michael Haggerty wrote:
Show 12 quoted lines
> > Instead of using hold_lock_file_for_append, let's copy the
> > file line by line, which ensures all records are properly
> > terminated. If we see an extra line, we can simply abort the
> > update (there is no point in even copying the rest, as we
> > know that it would be identical to the original).
> 
> Do we have reason to expect that a lot of people have alternates files
> that already contain duplicate lines? You say that this function is only
> called from `git clone`, so I guess the answer is "no".
> 
> But if I'm wrong, it might be friendly to de-dup the existing lines
> while copying them.

You're right; this is not something we expect. There's not really any way to get an alternates file inside the running clone, except by putting it in your "templates/" directory.

So I think it is OK to not worry about cleaning up an existing mess.
-Peff
Previous: Michael HaggertyNext: Jeff King
Message 7 of 34 in “removing questionable uses of git_path”
  1. 0/17 removing questionable uses of git_pathJeff King, Aug 10, 2015
  2. 01/17 cache.h: clarify documentation for git_path, et alJeff King, Aug 10, 2015
  3. 02/17 cache.h: complete set of git_path_submodule helpersJeff King, Aug 10, 2015
  4. 03/17 t5700: modernize styleJeff King, Aug 10, 2015
  5. 04/17 add_to_alternates_file: don't add duplicate entriesJeff King, Aug 10, 2015
  6. Michael HaggertyAug 11, 2015
  7. Jeff KingAug 11, 2015
  8. 05/17 remove hold_lock_file_for_appendJeff King, Aug 10, 2015
  9. Junio C HamanoAug 10, 2015
  10. Jeff KingAug 11, 2015
  11. 06/17 prefer git_pathdup to git_path in some possibly-dangerous casesJeff King, Aug 10, 2015
  12. 07/17 prefer mkpathdup to mkpath in assignmentsJeff King, Aug 10, 2015
  13. 08/17 remote.c: drop extraneous local variable from migrate_fileJeff King, Aug 10, 2015
  14. 09/17 refs.c: remove extra git_path calls from read_loose_refsJeff King, Aug 10, 2015
  15. 10/17 path.c: drop git_path_submoduleJeff King, Aug 10, 2015
  16. Junio C HamanoAug 10, 2015
  17. Junio C HamanoAug 10, 2015
  18. Junio C HamanoAug 10, 2015
  19. Jeff KingAug 11, 2015
  20. 11/17 refs.c: simplify strbufs in reflog setup and writingJeff King, Aug 10, 2015
  21. Michael HaggertyAug 10, 2015
  22. Jeff KingAug 10, 2015
  23. 12/17 refs.c: avoid repeated git_path calls in rename_tmp_logJeff King, Aug 10, 2015
  24. 13/17 refs.c: avoid git_path assignment in lock_ref_sha1_basicJeff King, Aug 10, 2015
  25. 14/17 refs.c: remove_empty_directories can take a strbufJeff King, Aug 10, 2015
  26. 15/17 find_hook: keep our own static bufferJeff King, Aug 10, 2015
  27. 16/17 get_repo_path: refactor path-allocationJeff King, Aug 10, 2015
  28. 17/17 memoize common git-path "constant" filesJeff King, Aug 10, 2015
  29. Michael HaggertyAug 10, 2015
  30. Jeff KingAug 10, 2015
  31. Michael HaggertyAug 10, 2015
  32. Junio C HamanoAug 10, 2015
  33. Jeff KingAug 10, 2015
  34. Duy NguyenAug 15, 2015

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