config: write out section headers with subsections correctly

write_section() mistakenly treated is input as the whole variable name
instead of simply the section (and possibly subsection) and would
confuse "section.subsection" as a section plus variable name and
produce a wrong section header.

Fix this and include a test for writing "section.subsection.var" and
reading it from the file.

1 files changed, 15 insertions, 0 deletions

diff --git a/tests-clar/config/write.c b/tests-clar/config/write.c
index d22c6f2cf..f25bf5a91 100644
--- a/tests-clar/config/write.c
+++ b/tests-clar/config/write.c
@@ -67,6 +67,21 @@ void test_config_write__delete_value(void)
 	git_config_free(cfg);
 }
 
+void test_config_write__write_subsection(void)
+{
+	git_config *cfg;
+	const char *str;
+
+	cl_git_pass(git_config_open_ondisk(&cfg, "config9"));
+	cl_git_pass(git_config_set_string(cfg, "my.own.var", "works"));
+	git_config_free(cfg);
+
+	cl_git_pass(git_config_open_ondisk(&cfg, "config9"));
+	cl_git_pass(git_config_get_string(cfg, "my.own.var", &str));
+	cl_git_pass(strcmp(str, "works"));
+	git_config_free(cfg);
+}
+
 void test_config_write__delete_inexistent(void)
 {
 	git_config *cfg;