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[PATCH 1/2] completion: don't return with error from __gitcomp_file_direct()

From
SZEDER Gábor <szeder.dev@gmail.com>
Date
May 18, 2018, 14:17 UTC
Message-ID
<20180518141751.16350-2-szeder.dev@gmail.com>
In-Reply-To
<20180518141751.16350-1-szeder.dev@gmail.com>

In __gitcomp_file_direct() we tell Bash that it should handle our possible completion words as filenames with the following piece of cleverness:

  # use a hack to enable file mode in bash < 4
  compopt -o filenames +o nospace 2>/dev/null ||
  compgen -f /non-existing-dir/ > /dev/null

Unfortunately, this makes this function always return with error when it is not invoked in real completion, but e.g. in tests of 't9902-completion.sh':

  - First the 'compopt' line errors out
    - either because in Bash v3.x there is no such command,
    - or because in Bash v4.x it complains about "not currently
      executing completion function",
  - then 'compgen' just silently returns with error because of the
    non-existing directory.

Since __gitcomp_file_direct() is now the last command executed in __git_complete_index_file(), that function returns with error as well, which prevents it from being invoked in tests directly as is, and would require extra steps in test to hide its error code.

So let's make sure that __gitcomp_file_direct() doesn't return with error, because in the tests coming in the following patch we do want to exercise __git_complete_index_file() directly,

__gitcomp_file() contains the same construct, and thus it, too, always returns with error. Update that function accordingly as well.

While at it, also remove the space from between the redirection operator and the filename in both functions.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
 contrib/completion/git-completion.bash | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 816901f0f0..8bc79a5226 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -420,7 +420,8 @@ __gitcomp_file_direct ()
 
 	# use a hack to enable file mode in bash < 4
 	compopt -o filenames +o nospace 2>/dev/null ||
-	compgen -f /non-existing-dir/ > /dev/null
+	compgen -f /non-existing-dir/ >/dev/null ||
+	true
 }
 
 # Generates completion reply with compgen from newline-separated possible
@@ -442,7 +443,8 @@ __gitcomp_file ()
 
 	# use a hack to enable file mode in bash < 4
 	compopt -o filenames +o nospace 2>/dev/null ||
-	compgen -f /non-existing-dir/ > /dev/null
+	compgen -f /non-existing-dir/ >/dev/null ||
+	true
 }
 
 # Execute 'git ls-files', unless the --committable option is specified, in
-- 
2.17.0.799.gd371044c7c
Previous: SZEDER GáborNext: SZEDER Gábor
Message 17 of 36 in “completion: improve ls-files filter performance”
  1. 1/2 completion: improve ls-files filter performanceClemens Buchacher, Mar 17, 2018
  2. 2/2 completion: simplify ls-files filterClemens Buchacher, Mar 17, 2018
  3. Junio C HamanoMar 18, 2018
  4. SZEDER GáborMar 18, 2018
  5. Junio C HamanoMar 18, 2018
  6. completion: improve ls-files filter performanceClemens Buchacher, Apr 4, 2018
  7. Johannes SchindelinApr 4, 2018
  8. 00/11 completion: path completion improvements: speedup and quoted pathsSZEDER Gábor, Apr 16, 2018
  9. 01/11 t9902-completion: add tests demonstrating issues with quoted pathnamesSZEDER Gábor, Apr 16, 2018
  10. Junio C HamanoApr 17, 2018
  11. SZEDER GáborApr 17, 2018
  12. SZEDER GáborApr 17, 2018
  13. Junio C HamanoApr 18, 2018
  14. SZEDER GáborApr 26, 2018
  15. Junio C HamanoApr 26, 2018
  16. 0/2 Test improvements for 'sg/complete-paths'SZEDER Gábor, May 18, 2018
  17. 1/2 completion: don't return with error from __gitcomp_file_direct()SZEDER Gábor, May 18, 2018
  18. 2/2 t9902-completion: exercise __git_complete_index_file() directlySZEDER Gábor, May 18, 2018
  19. Eric SunshineMay 18, 2018
  20. Johannes SchindelinMay 21, 2018
  21. Johannes SchindelinMay 21, 2018
  22. Johannes SchindelinMay 21, 2018
  23. Johannes SchindelinApr 18, 2018
  24. SZEDER GáborApr 19, 2018
  25. 02/11 completion: move __git_complete_index_file() next to its helpersSZEDER Gábor, Apr 16, 2018
  26. 04/11 completion: support completing non-ASCII pathnamesSZEDER Gábor, Apr 16, 2018
  27. 08/11 t9902-completion: ignore COMPREPLY element order in some testsSZEDER Gábor, Apr 16, 2018
  28. 09/11 completion: remove repeated dirnames with 'awk' during path completionSZEDER Gábor, Apr 16, 2018
  29. 06/11 completion: let 'ls-files' and 'diff-index' filter matching pathsSZEDER Gábor, Apr 16, 2018
  30. 07/11 completion: use 'awk' to strip trailing path componentsSZEDER Gábor, Apr 16, 2018
  31. 05/11 completion: improve handling quoted paths on the command lineSZEDER Gábor, Apr 16, 2018
  32. 03/11 completion: simplify prefix path component handling during path completionSZEDER Gábor, Apr 16, 2018
  33. 10/11 completion: improve handling quoted paths in 'git ls-files's outputSZEDER Gábor, Apr 16, 2018
  34. 11/11 completion: fill COMPREPLY directly when completing pathsSZEDER Gábor, Apr 16, 2018
  35. Junio C HamanoMar 18, 2018
  36. Johannes SchindelinMar 19, 2018

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