Merge pull request libgit2#5926 from Batchyx/batchyx/config-refresh-twice

config: fix included configs not refreshed more than once

Author: ethomson

src/config_file.c

@@ -164,23 +164,27 @@ static int config_file_is_modified(int *modified, config_file *file)
 	return error;
 }
 
+static void config_file_clear_includes(config_file_backend* cfg)
+{
+	config_file *include;
+	uint32_t i;
+
+	git_array_foreach(cfg->file.includes, i, include)
+		config_file_clear(include);
+	git_array_clear(cfg->file.includes);
+}
+
 static int config_file_set_entries(git_config_backend *cfg, git_config_entries *entries)
 {
 	config_file_backend *b = GIT_CONTAINER_OF(cfg, config_file_backend, parent);
 	git_config_entries *old = NULL;
-	config_file *include;
 	int error;
-	uint32_t i;
 
 	if (b->parent.readonly) {
 		git_error_set(GIT_ERROR_CONFIG, "this backend is read-only");
 		return -1;
 	}
 
-	git_array_foreach(b->file.includes, i, include)
-		config_file_clear(include);
-	git_array_clear(b->file.includes);
-
 	if ((error = git_mutex_lock(&b->values_mutex)) < 0) {
 		git_error_set(GIT_ERROR_OS, "failed to lock config backend");
 		goto out;
@@ -202,6 +206,8 @@ static int config_file_refresh_from_buffer(git_config_backend *cfg, const char *
 	git_config_entries *entries = NULL;
 	int error;
 
+	config_file_clear_includes(b);
+
 	if ((error = git_config_entries_new(&entries)) < 0 ||
 	    (error = config_file_read_buffer(entries, b->repo, &b->file,
 					     b->level, 0, buf, buflen)) < 0 ||
@@ -229,6 +235,8 @@ static int config_file_refresh(git_config_backend *cfg)
 	if (!modified)
 		return 0;
 
+	config_file_clear_includes(b);
+
 	if ((error = git_config_entries_new(&entries)) < 0 ||
 	    (error = config_file_read(entries, b->repo, &b->file, b->level, 0)) < 0 ||
 	    (error = config_file_set_entries(cfg, entries)) < 0)

tests/config/include.c

@@ -178,6 +178,30 @@ void test_config_include__rewriting_include_refreshes_values(void)
 	cl_git_pass(p_unlink("second"));
 }
 
+void test_config_include__rewriting_include_twice_refreshes_values(void)
+{
+	cl_git_mkfile("top-level", "[include]\npath = included");
+	cl_git_mkfile("included", "[foo]\nbar = first-value");
+
+	cl_git_pass(git_config_open_ondisk(&cfg, "top-level"));
+	cl_git_pass(git_config_get_string_buf(&buf, cfg, "foo.bar"));
+
+	git_buf_clear(&buf);
+	cl_git_mkfile("included", "[foo]\nother = value2");
+	cl_git_fail(git_config_get_string_buf(&buf, cfg, "foo.bar"));
+	cl_git_pass(git_config_get_string_buf(&buf, cfg, "foo.other"));
+	cl_assert_equal_s(buf.ptr, "value2");
+
+	git_buf_clear(&buf);
+	cl_git_mkfile("included", "[foo]\nanother = bar");
+	cl_git_fail(git_config_get_string_buf(&buf, cfg, "foo.other"));
+	cl_git_pass(git_config_get_string_buf(&buf, cfg, "foo.another"));
+	cl_assert_equal_s(buf.ptr, "bar");
+
+	cl_git_pass(p_unlink("top-level"));
+	cl_git_pass(p_unlink("included"));
+}
+
 void test_config_include__included_variables_cannot_be_deleted(void)
 {
 	cl_git_mkfile("top-level", "[include]\npath = included\n");