[PATCH v4 06/10] Make read_early_config() reusable

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The pager configuration needs to be read early, possibly before
discovering any .git/ directory.

Let's not hide this function in pager.c, but make it available to other
callers.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 cache.h  |  1 +
 config.c | 31 +++++++++++++++++++++++++++++++
 pager.c  | 31 -------------------------------
 3 files changed, 32 insertions(+), 31 deletions(-)

diff --git a/cache.h b/cache.h
index 5218726cf88..e7b57457e73 100644
--- a/cache.h
+++ b/cache.h
@@ -1804,6 +1804,7 @@ extern int git_config_from_blob_sha1(config_fn_t fn, const char *name,
 				     const unsigned char *sha1, void *data);
 extern void git_config_push_parameter(const char *text);
 extern int git_config_from_parameters(config_fn_t fn, void *data);
+extern void read_early_config(config_fn_t cb, void *data);
 extern void git_config(config_fn_t fn, void *);
 extern int git_config_with_options(config_fn_t fn, void *,
 				   struct git_config_source *config_source,
diff --git a/config.c b/config.c
index c6b874a7bf7..9cfbeafd04c 100644
--- a/config.c
+++ b/config.c
@@ -1412,6 +1412,37 @@ static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
 	}
 }
 
+void read_early_config(config_fn_t cb, void *data)
+{
+	git_config_with_options(cb, data, NULL, 1);
+
+	/*
+	 * Note that this is a really dirty hack that does the wrong thing in
+	 * many cases. The crux of the problem is that we cannot run
+	 * setup_git_directory() early on in git's setup, so we have no idea if
+	 * we are in a repository or not, and therefore are not sure whether
+	 * and how to read repository-local config.
+	 *
+	 * So if we _aren't_ in a repository (or we are but we would reject its
+	 * core.repositoryformatversion), we'll read whatever is in .git/config
+	 * blindly. Similarly, if we _are_ in a repository, but not at the
+	 * root, we'll fail to find .git/config (because it's really
+	 * ../.git/config, etc). See t7006 for a complete set of failures.
+	 *
+	 * However, we have historically provided this hack because it does
+	 * work some of the time (namely when you are at the top-level of a
+	 * valid repository), and would rarely make things worse (i.e., you do
+	 * not generally have a .git/config file sitting around).
+	 */
+	if (!startup_info->have_repository) {
+		struct git_config_source repo_config;
+
+		memset(&repo_config, 0, sizeof(repo_config));
+		repo_config.file = ".git/config";
+		git_config_with_options(cb, data, &repo_config, 1);
+	}
+}
+
 static void git_config_check_init(void);
 
 void git_config(config_fn_t fn, void *data)
diff --git a/pager.c b/pager.c
index ae796433630..73ca8bc3b17 100644
--- a/pager.c
+++ b/pager.c
@@ -43,37 +43,6 @@ static int core_pager_config(const char *var, const char *value, void *data)
 	return 0;
 }
 
-static void read_early_config(config_fn_t cb, void *data)
-{
-	git_config_with_options(cb, data, NULL, 1);
-
-	/*
-	 * Note that this is a really dirty hack that does the wrong thing in
-	 * many cases. The crux of the problem is that we cannot run
-	 * setup_git_directory() early on in git's setup, so we have no idea if
-	 * we are in a repository or not, and therefore are not sure whether
-	 * and how to read repository-local config.
-	 *
-	 * So if we _aren't_ in a repository (or we are but we would reject its
-	 * core.repositoryformatversion), we'll read whatever is in .git/config
-	 * blindly. Similarly, if we _are_ in a repository, but not at the
-	 * root, we'll fail to find .git/config (because it's really
-	 * ../.git/config, etc). See t7006 for a complete set of failures.
-	 *
-	 * However, we have historically provided this hack because it does
-	 * work some of the time (namely when you are at the top-level of a
-	 * valid repository), and would rarely make things worse (i.e., you do
-	 * not generally have a .git/config file sitting around).
-	 */
-	if (!startup_info->have_repository) {
-		struct git_config_source repo_config;
-
-		memset(&repo_config, 0, sizeof(repo_config));
-		repo_config.file = ".git/config";
-		git_config_with_options(cb, data, &repo_config, 1);
-	}
-}
-
 const char *git_pager(int stdout_is_tty)
 {
 	const char *pager;
-- 
2.12.0.windows.1.7.g94dafc3b124





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