Rewrite `git_config_open_global`

We have a lot of utility methods that make path building trivial. Use
them!

1 files changed, 2 insertions, 0 deletions

diff --git a/src/config.h b/src/config.h
index a811fd850..104e01633 100644
--- a/src/config.h
+++ b/src/config.h
@@ -5,6 +5,8 @@
 #include "git2/config.h"
 #include "vector.h"
 
+#define GIT_CONFIG_FILENAME ".gitconfig"
+
 struct git_config {
 	git_vector backends;
 };