Field names like To:, Cc:, etc should be treated as case-independent;
use a case-insensitive regexp to match them as such.  Previously,
git-send-email would send email messages with a lowercase "cc:" line in
the body without actually sending a copy of the message to that address.

Signed-off-by: Nickolai Zeldovich <nicko...@csail.mit.edu>
---
 git-send-email.perl |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/git-send-email.perl b/git-send-email.perl
index 94c7f76..be809e5 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1285,10 +1285,10 @@ 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;
@@ -1296,14 +1296,14 @@ 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, $addr;
                                }
                        }
-                       elsif (/^Cc:\s+(.*)$/) {
+                       elsif (/^Cc:\s+(.*)$/i) {
                                foreach my $addr (parse_address_line($1)) {
                                        if (unquote_rfc2047($addr) eq $sender) {
                                                next if ($suppress_cc{'self'});
@@ -1325,7 +1325,7 @@ 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, $_;
                        }
 
-- 
1.7.10.4

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