am: allow individual e-mail files as input

diff --git a/git-send-email.perl b/git-send-email.perl
index 8ce6f1fe57579201c09cf960caed98d330ab2bbb..0700d80afcf99dfafbd34731bf3c359b7d921ff3 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -450,7 +450,6 @@ ($)
        try {
                $repo->command('rev-parse', '--verify', '--quiet', $f);
                if (defined($format_patch)) {
-                       print "foo\n";
                        return $format_patch;
                }
                die(<<EOF);
@@ -654,13 +653,17 @@ sub ask {
 }
 
 sub expand_aliases {
-       my @cur = @_;
-       my @last;
-       do {
-               @last = @cur;
-               @cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
-       } while (join(',',@cur) ne join(',',@last));
-       return @cur;
+       return map { expand_one_alias($_) } @_;
+}
+
+my %EXPANDED_ALIASES;
+sub expand_one_alias {
+       my $alias = shift;
+       if ($EXPANDED_ALIASES{$alias}) {
+               die "fatal: alias '$alias' expands to itself\n";
+       }
+       local $EXPANDED_ALIASES{$alias} = 1;
+       return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 }
 
 @to = expand_aliases(@to);