Remove dependency on a file named "-lz"

diff --git a/git-send-email.perl b/git-send-email.perl
index 13b85dddd186b5b769fb8e9b88896b1f89ef7935..b220d11cc1e92e50b3c25460f84ab5db12a04da1 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -54,29 +54,34 @@
                    "compose" => \$compose,
                    "quiet" => \$quiet,
                    "suppress-from" => \$suppress_from,
-                   "no-signed-off-cc" => \$no_signed_off_cc,
+                   "no-signed-off-cc|no-signed-off-by-cc" => \$no_signed_off_cc,
         );
 
 # Now, let's fill any that aren't set in with defaults:
 
-open(GITVAR,"-|","git-var","-l")
-       or die "Failed to open pipe from git-var: $!";
-
-my ($author,$committer);
-while(<GITVAR>) {
-       chomp;
-       my ($var,$data) = split /=/,$_,2;
-       my @fields = split /\s+/, $data;
-
-       my $ident = join(" ", @fields[0...(@fields-3)]);
+sub gitvar {
+    my ($var) = @_;
+    my $fh;
+    my $pid = open($fh, '-|');
+    die "$!" unless defined $pid;
+    if (!$pid) {
+       exec('git-var', $var) or die "$!";
+    }
+    my ($val) = <$fh>;
+    close $fh or die "$!";
+    chomp($val);
+    return $val;
+}
 
-       if ($var eq 'GIT_AUTHOR_IDENT') {
-               $author = $ident;
-       } elsif ($var eq 'GIT_COMMITTER_IDENT') {
-               $committer = $ident;
-       }
+sub gitvar_ident {
+    my ($name) = @_;
+    my $val = gitvar($name);
+    my @field = split(/\s+/, $val);
+    return join(' ', @field[0...(@field-3)]);
 }
-close(GITVAR);
+
+my ($author) = gitvar_ident('GIT_AUTHOR_IDENT');
+my ($committer) = gitvar_ident('GIT_COMMITTER_IDENT');
 
 my $prompting = 0;
 if (!defined $from) {
@@ -302,6 +307,7 @@ sub send_message
 foreach my $t (@files) {
        open(F,"<",$t) or die "can't open file $t";
 
+       my $author_not_sender = undef;
        @cc = @initial_cc;
        my $found_mbox = 0;
        my $header_done = 0;
@@ -316,7 +322,12 @@ sub send_message
                                        $subject = $1;
 
                                } elsif (/^(Cc|From):\s+(.*)$/) {
-                                       next if ($2 eq $from && $suppress_from);
+                                       if ($2 eq $from) {
+                                               next if ($suppress_from);
+                                       }
+                                       else {
+                                               $author_not_sender = $2;
+                                       }
                                        printf("(mbox) Adding cc: %s from line '%s'\n",
                                                $2, $_) unless $quiet;
                                        push @cc, $2;
@@ -355,6 +366,9 @@ sub send_message
                }
        }
        close F;
+       if (defined $author_not_sender) {
+               $message = "From: $author_not_sender\n\n$message";
+       }
 
        $cc = join(", ", unique_email_list(@cc));