[RFC PATCH 3/3] ident.c: treat $EMAIL as giving user.email identity explicitly

The environment variable EMAIL has been honored since 28a94f8 (Fall back
to $EMAIL for missing GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL,
2007-04-28) as the end-user's wish to use the address as the identity.
When we use it, we should say we are explicitly given email by the user.

Signed-off-by: Junio C Hamano <redacted>
---

 * This is an RFC as some people would feel strongly about _not_ using
   $EMAIL as their commit identity and would rather override it explicitly
   with user.email; if they weren't told about git using their $EMAIL,
   they will complain.

 ident.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ident.c b/ident.c
index e67c5ad..d4f6145 100644
--- a/ident.c
+++ b/ident.c

@@ -85,10 +85,11 @@ static void setup_ident(void)
 	if (!git_default_email[0]) {
 		const char *email = getenv("EMAIL");
 
-		if (email && email[0])
+		if (email && email[0]) {
 			strlcpy(git_default_email, email,
 				sizeof(git_default_email));
-		else {
+			user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
+		} else {
 			if (!pw)
 				pw = getpwuid(getuid());
 			if (!pw)

-- 
1.6.6.209.g52296.dirty