It's not very intuitive that git_parse_maybe_bool_text() would
consider NULL to be a true value. Add a small comment about it.

See a789ca70e7 (config: teach "git -c" to recognize an empty string,
2014-08-04) for the behavior of "git -c", but we'll end up here in
both the config file parsing and command-line parsing cases.

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 config.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/config.c b/config.c
index 6428393a41..fc28dbd97c 100644
--- a/config.c
+++ b/config.c

@@ -1229,6 +1229,10 @@ ssize_t git_config_ssize_t(const char *name, const char *value)
 static int git_parse_maybe_bool_text(const char *value)
 {
 	if (!value)
+		/*
+		 * "[foo]\nbar\n" and "-c foo.bar" on the command-line
+		 * are true.
+		 */
 		return 1;
 	if (!*value)
 		return 0;

-- 
2.31.1.527.g9b8f7de2547