git-send-email: treat field names as case-insensitively

Field names like To:, Cc:, etc. are case-insensitive; use a
case-insensitive regexp to match them as such.

Previously, git-send-email would fail to pick-up the addresses when
in-body "fake" headers with different cases (e.g. lowercase "cc:")
are manually inserted to the messages it was asked to send, even
though the text will still show them.

Signed-off-by: Nickolai Zeldovich <nickolai@csail.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-send-email.perl b/git-send-email.perl
index aea66a0d47a9ad64fe805351c631fe5fddbf6182..7198d2ec9ac3ae3852decc9eba994a03f50294c3 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1227,10 +1227,10 @@ foreach my $t (@files) {
                }
 
                if (defined $input_format && $input_format eq 'mbox') {
-                       if (/^Subject:\s+(.*)$/) {
+                       if (/^Subject:\s+(.*)$/i) {
                                $subject = $1;
                        }
-                       elsif (/^From:\s+(.*)$/) {
+                       elsif (/^From:\s+(.*)$/i) {
                                ($author, $author_encoding) = unquote_rfc2047($1);
                                next if $suppress_cc{'author'};
                                next if $suppress_cc{'self'} and $author eq $sender;
@@ -1238,14 +1238,14 @@ foreach my $t (@files) {
                                        $1, $_) unless $quiet;
                                push @cc, $1;
                        }
-                       elsif (/^To:\s+(.*)$/) {
+                       elsif (/^To:\s+(.*)$/i) {
                                foreach my $addr (parse_address_line($1)) {
                                        printf("(mbox) Adding to: %s from line '%s'\n",
                                                $addr, $_) unless $quiet;
                                        push @to, sanitize_address($addr);
                                }
                        }
-                       elsif (/^Cc:\s+(.*)$/) {
+                       elsif (/^Cc:\s+(.*)$/i) {
                                foreach my $addr (parse_address_line($1)) {
                                        if (unquote_rfc2047($addr) eq $sender) {
                                                next if ($suppress_cc{'self'});
@@ -1267,7 +1267,7 @@ foreach my $t (@files) {
                        elsif (/^Message-Id: (.*)/i) {
                                $message_id = $1;
                        }
-                       elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
+                       elsif (!/^Date:\s/i && /^[-A-Za-z]+:\s+\S/) {
                                push @xh, $_;
                        }