Re: [BUG] submodule config does not apply to upper case submodules?

[Junio C Hamano <gitster@pobox.com>]

Junio C Hamano <gitster@pobox.com> writes:

> Jonathan Tan <jonathantanmy@google.com> writes:
>
>> I had some time to look into this, and yes, command-line parameters
>> are too aggressively downcased ("git_config_parse_parameter" calls
>> "strbuf_tolower" on the entire key part in config.c).
>
> Ahh, thanks.  So this is not about submodules at all; it is -c var=VAL
> where var is downcased too aggressively.

Perhaps something like this?

 config.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/config.c b/config.c
index c6b874a7bf..98bf8fee32 100644
--- a/config.c
+++ b/config.c
@@ -201,6 +201,20 @@ void git_config_push_parameter(const char *text)
 	strbuf_release(&env);
 }
 
+static void canonicalize_config_variable_name(struct strbuf *var)
+{
+	char *first_dot = strchr(var->buf, '.');
+	char *last_dot = strrchr(var->buf, '.');
+	char *cp;
+
+	if (first_dot)
+		for (cp = var->buf; *cp && cp < first_dot; cp++)
+			*cp = tolower(*cp);
+	if (last_dot)
+		for (cp = last_dot; *cp; cp++)
+			*cp = tolower(*cp);
+}
+
 int git_config_parse_parameter(const char *text,
 			       config_fn_t fn, void *data)
 {
@@ -223,7 +237,7 @@ int git_config_parse_parameter(const char *text,
 		strbuf_list_free(pair);
 		return error("bogus config parameter: %s", text);
 	}
-	strbuf_tolower(pair[0]);
+	canonicalize_config_variable_name(pair[0]);
 	if (fn(pair[0]->buf, value, data) < 0) {
 		strbuf_list_free(pair);
 		return -1;