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[PATCH 19/21] completion: don't guard git executions with __gitdir()

From
SZEDER Gábor <szeder@ira.uka.de>
Date
Feb 25, 2016, 22:50 UTC
Message-ID
<1456440650-32623-20-git-send-email-szeder@ira.uka.de>
In-Reply-To
<1456440650-32623-1-git-send-email-szeder@ira.uka.de>

Three completion functions first run __gitdir() and check that the path it outputs exists, i.e. that there is a git repository, and run a git command only if there is one.

After the previous changes in this series there are no further uses of __gitdir()'s output in these functions besides those checks. And those checks are unnecessary, because we can just execute those git commands outside of a repository and let them error out. We don't perform such a check in other places either.

Remove this check and the __gitdir() call from these functions, sparing the fork()+exec() overhead of the command substitution and the potential 'git rev-parse' execution.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
---
 contrib/completion/git-completion.bash | 32 +++++++++++---------------------
 1 file changed, 11 insertions(+), 21 deletions(-)
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 2d0bd018701e..605ab84296a2 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -312,35 +312,25 @@ __git_ls_files_helper ()
 #    slash.
 __git_index_files ()
 {
-	local dir="$(__gitdir)" root="${2-.}" file
-
-	if [ -d "$dir" ]; then
-		__git_ls_files_helper "$root" "$1" |
-		while read -r file; do
-			case "$file" in
-			?*/*) echo "${file%%/*}" ;;
-			*) echo "$file" ;;
-			esac
-		done | sort | uniq
-	fi
+	local root="${2-.}" file
+
+	__git_ls_files_helper "$root" "$1" |
+	while read -r file; do
+		case "$file" in
+		?*/*) echo "${file%%/*}" ;;
+		*) echo "$file" ;;
+		esac
+	done | sort | uniq
 }
 
 __git_heads ()
 {
-	local dir="$(__gitdir)"
-	if [ -d "$dir" ]; then
-		__git for-each-ref --format='%(refname:short)' refs/heads
-		return
-	fi
+	__git for-each-ref --format='%(refname:short)' refs/heads
 }
 
 __git_tags ()
 {
-	local dir="$(__gitdir)"
-	if [ -d "$dir" ]; then
-		__git for-each-ref --format='%(refname:short)' refs/tags
-		return
-	fi
+	__git for-each-ref --format='%(refname:short)' refs/tags
 }
 
 # Lists refs from the local (by default) or from a remote repository.
-- 
2.7.2.410.g92cb358
Previous: SZEDER GáborNext: SZEDER Gábor
Message 23 of 25 in “completion: __gitdir()-related improvements”
  1. 00/21 completion: __gitdir()-related improvementsSZEDER Gábor, Feb 25, 2016
  2. 01/21 completion: improve __git_refs()'s in-code documentationSZEDER Gábor, Feb 25, 2016
  3. 02/21 completion tests: don't add test cruft to the test repositorySZEDER Gábor, Feb 25, 2016
  4. 03/21 completion tests: make the $cur variable local to the test helper functionsSZEDER Gábor, Feb 25, 2016
  5. 04/21 completion tests: consolidate getting path of current working directorySZEDER Gábor, Feb 25, 2016
  6. 05/21 completion tests: check __gitdir()'s output in the error casesSZEDER Gábor, Feb 25, 2016
  7. 06/21 completion tests: add tests for the __git_refs() helper functionSZEDER Gábor, Feb 25, 2016
  8. 07/21 completion: ensure that the repository path given on the command line existsSZEDER Gábor, Feb 25, 2016
  9. 08/21 completion: fix most spots not respecting 'git --git-dir=<path>'SZEDER Gábor, Feb 25, 2016
  10. 09/21 completion: respect 'git --git-dir=<path>' when listing remote refsSZEDER Gábor, Feb 25, 2016
  11. 10/21 completion: list refs from remote when remote's name matches a directorySZEDER Gábor, Feb 25, 2016
  12. 11/21 completion: don't list 'HEAD' when trying refs completion outside of a repoSZEDER Gábor, Feb 25, 2016
  13. 12/21 completion: list short refs from a remote given as a URLSZEDER Gábor, Feb 25, 2016
  14. 13/21 rev-parse: add '--absolute-git-dir' optionSZEDER Gábor, Feb 25, 2016
  15. Mike RappazzoApr 26, 2016
  16. Jeff KingApr 26, 2016
  17. SZEDER GáborMay 18, 2016
  18. 14/21 completion: don't offer commands when 'git --opt' needs an argumentSZEDER Gábor, Feb 25, 2016
  19. 15/21 completion: fix completion after 'git -C <path>'SZEDER Gábor, Feb 25, 2016
  20. 16/21 completion: respect 'git -C <path>'SZEDER Gábor, Feb 25, 2016
  21. 17/21 completion: don't use __gitdir() for git commandsSZEDER Gábor, Feb 25, 2016
  22. 18/21 completion: consolidate silencing errors from git commandsSZEDER Gábor, Feb 25, 2016
  23. 19/21 completion: don't guard git executions with __gitdir()SZEDER Gábor, Feb 25, 2016
  24. 20/21 completion: extract repository discovery from __gitdir()SZEDER Gábor, Feb 25, 2016
  25. 21/21 completion: cache the path to the repositorySZEDER Gábor, Feb 25, 2016

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