Merge branch 'cs/perl-config-path-send-email'

* cs/perl-config-path-send-email:
  use new Git::config_path() for aliasesfile
  Add Git::config_path()

Author: gitster

git-send-email.perl

@@ -225,7 +225,6 @@ sub do_edit {
     "cccmd" => \$cc_cmd,
     "aliasfiletype" => \$aliasfiletype,
     "bcc" => \@bcclist,
-    "aliasesfile" => \@alias_files,
     "suppresscc" => \@suppress_cc,
     "envelopesender" => \$envelope_sender,
     "multiedit" => \$multiedit,
@@ -234,6 +233,10 @@ sub do_edit {
     "assume8bitencoding" => \$auto_8bit_encoding,
 );
 
+my %config_path_settings = (
+    "aliasesfile" => \@alias_files,
+);
+
 # Help users prepare for 1.7.0
 sub chain_reply_to {
 	if (defined $chain_reply_to &&
@@ -333,6 +336,11 @@ sub read_config {
 		$$target = Git::config_bool(@repo, "$prefix.$setting") unless (defined $$target);
 	}
 
+	foreach my $setting (keys %config_path_settings) {
+		my $target = $config_path_settings{$setting}->[0];
+		$$target = Git::config_path(@repo, "$prefix.$setting") unless (defined $$target);
+	}
+
 	foreach my $setting (keys %config_settings) {
 		my $target = $config_settings{$setting};
 		next if $setting eq "to" and defined $no_to;

perl/Git.pm

@@ -627,6 +627,38 @@ sub config_bool {
 	};
 }
 
+
+=item config_path ( VARIABLE )
+
+Retrieve the path configuration C<VARIABLE>. The return value
+is an expanded path or C<undef> if it's not defined.
+
+This currently wraps command('config') so it is not so fast.
+
+=cut
+
+sub config_path {
+	my ($self, $var) = _maybe_self(@_);
+
+	try {
+		my @cmd = ('config', '--path');
+		unshift @cmd, $self if $self;
+		if (wantarray) {
+			return command(@cmd, '--get-all', $var);
+		} else {
+			return command_oneline(@cmd, '--get', $var);
+		}
+	} catch Git::Error::Command with {
+		my $E = shift;
+		if ($E->value() == 1) {
+			# Key not found.
+			return undef;
+		} else {
+			throw $E;
+		}
+	};
+}
+
 =item config_int ( VARIABLE )
 
 Retrieve the integer configuration C<VARIABLE>. The return value