[PATCH v2] rev-parse: respect core.hooksPath in --git-path

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The idea of the --git-path option is not only to avoid having to
prefix paths with the output of --git-dir all the time, but also to
respect overrides for specific common paths inside the .git directory
(e.g. `git rev-parse --git-path objects` will report the value of the
environment variable GIT_OBJECT_DIRECTORY, if set).

When introducing the core.hooksPath setting, we forgot to adjust
git_path() accordingly. This patch fixes that.

While at it, revert the special-casing of core.hooksPath in
run-command.c, as it is now no longer needed.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
Published-As: https://github.com/dscho/git/releases/tag/git-path-hooks-v2
Fetch-It-Via: git fetch https://github.com/dscho/git git-path-hooks-v2
Interdiff vs v1:

 diff --git a/run-command.c b/run-command.c
 index 33bc63a..5a4dbb6 100644
 --- a/run-command.c
 +++ b/run-command.c
 @@ -824,10 +824,7 @@ const char *find_hook(const char *name)
  	static struct strbuf path = STRBUF_INIT;
  
  	strbuf_reset(&path);
 -	if (git_hooks_path)
 -		strbuf_addf(&path, "%s/%s", git_hooks_path, name);
 -	else
 -		strbuf_git_path(&path, "hooks/%s", name);
 +	strbuf_git_path(&path, "hooks/%s", name);
  	if (access(path.buf, X_OK) < 0)
  		return NULL;
  	return path.buf;


 path.c                       | 2 ++
 run-command.c                | 5 +----
 t/t1350-config-hooks-path.sh | 6 ++++++
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/path.c b/path.c
index 17551c4..fe3c4d9 100644
--- a/path.c
+++ b/path.c
@@ -380,6 +380,8 @@ static void adjust_git_path(struct strbuf *buf, int git_dir_len)
 			      get_index_file(), strlen(get_index_file()));
 	else if (git_db_env && dir_prefix(base, "objects"))
 		replace_dir(buf, git_dir_len + 7, get_object_directory());
+	else if (git_hooks_path && dir_prefix(base, "hooks"))
+		replace_dir(buf, git_dir_len + 5, git_hooks_path);
 	else if (git_common_dir_env)
 		update_common_dir(buf, git_dir_len, NULL);
 }
diff --git a/run-command.c b/run-command.c
index 33bc63a..5a4dbb6 100644
--- a/run-command.c
+++ b/run-command.c
@@ -824,10 +824,7 @@ const char *find_hook(const char *name)
 	static struct strbuf path = STRBUF_INIT;
 
 	strbuf_reset(&path);
-	if (git_hooks_path)
-		strbuf_addf(&path, "%s/%s", git_hooks_path, name);
-	else
-		strbuf_git_path(&path, "hooks/%s", name);
+	strbuf_git_path(&path, "hooks/%s", name);
 	if (access(path.buf, X_OK) < 0)
 		return NULL;
 	return path.buf;
diff --git a/t/t1350-config-hooks-path.sh b/t/t1350-config-hooks-path.sh
index 5e3fb3a..f1f9aee 100755
--- a/t/t1350-config-hooks-path.sh
+++ b/t/t1350-config-hooks-path.sh
@@ -34,4 +34,10 @@ test_expect_success 'Check that various forms of specifying core.hooksPath work'
 	test_cmp expect actual
 '
 
+test_expect_success 'git rev-parse --git-path hooks' '
+	git config core.hooksPath .git/custom-hooks &&
+	git rev-parse --git-path hooks/abc >actual &&
+	test .git/custom-hooks/abc = "$(cat actual)"
+'
+
 test_done
-- 
2.9.2.691.g78954f3

base-commit: 07c92928f2b782330df6e78dd9d019e984d820a7
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