Marios Titas <red...@gmx.com> writes:

> On Thu, Mar 31, 2016 at 10:40:03AM -0400, Jeff King wrote:
>>On Wed, Mar 30, 2016 at 10:29:42PM +0300, Marios Titas wrote:
>>
>>> If user.useConfigOnly is set, it does not make sense to try to
>>> auto-detect the name and/or the email. So it's better to do the
>>> useConfigOnly checks first.
>>
>>It might be nice to explain how it is better here. I'd guess it is
>>because we may fail during xgetpwuid(), giving a message that is much
>>less informative?
>
> Oops sorry, my bad, I should have included an example in the commit
> message. So with git 2.8.0, if you provide a name and set
> useConfigOnly to true in your ~/.gitconfig file, then if try to commit
> something in a new git repo, it will fail with the following message:
>
>    *** Please tell me who you are.
>     Run
>       git config --global user.email "y...@example.com"
>      git config --global user.name "Your Name"
>     to set your account's default identity.
>    Omit --global to set the identity only in this repository.
>     fatal: unable to auto-detect email address (got 'XXX@YYY.(none)')
>
> (provided of course that auto-detection of email fails). This wrong,
> because auto-detection is disabled anyway.

OK, let's do this, then.

-- >8 --
From: Marios Titas <red...@gmx.com>
Date: Wed, 30 Mar 2016 22:29:42 +0300
Subject: [PATCH] ident: check for useConfigOnly before auto-detection of
 name/email

If user.useConfigOnly is set, it does not make sense to try to
auto-detect the name and/or the email.  The auto-detection may
even result in a bogus name and trigger an error message.

Check if the use-config-only is set and die if no explicit name was
given, before attempting to auto-detect, to correct this.

Signed-off-by: Marios Titas <red...@gmx.com>
Signed-off-by: Junio C Hamano <gits...@pobox.com>
---
 ident.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/ident.c b/ident.c
index 4bd8084..b2521ff 100644
--- a/ident.c
+++ b/ident.c
@@ -351,15 +351,15 @@ const char *fmt_ident(const char *name, const char *email,
        if (want_name) {
                int using_default = 0;
                if (!name) {
+                       if (strict && ident_use_config_only
+                           && !(ident_config_given & IDENT_NAME_GIVEN))
+                               die("user.useConfigOnly set but no name given");
                        name = ident_default_name();
                        using_default = 1;
                        if (strict && default_name_is_bogus) {
                                fputs(env_hint, stderr);
                                die("unable to auto-detect name (got '%s')", 
name);
                        }
-                       if (strict && ident_use_config_only
-                           && !(ident_config_given & IDENT_NAME_GIVEN))
-                               die("user.useConfigOnly set but no name given");
                }
                if (!*name) {
                        struct passwd *pw;
@@ -374,14 +374,14 @@ const char *fmt_ident(const char *name, const char *email,
        }
 
        if (!email) {
+               if (strict && ident_use_config_only
+                   && !(ident_config_given & IDENT_MAIL_GIVEN))
+                       die("user.useConfigOnly set but no mail given");
                email = ident_default_email();
                if (strict && default_email_is_bogus) {
                        fputs(env_hint, stderr);
                        die("unable to auto-detect email address (got '%s')", 
email);
                }
-               if (strict && ident_use_config_only
-                   && !(ident_config_given & IDENT_MAIL_GIVEN))
-                       die("user.useConfigOnly set but no mail given");
        }
 
        strbuf_reset(&ident);
-- 
2.8.0-246-g1783343

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