solver: force quoted-printable bodies to LF

..if the Email::MIME ->crlf is LF.

Email::MIME::Encodings forces everything to CRLF on
quoted-printable messages for RFC-compliance; and
git-apply --ignore-whitespace seems to miss a context
line which is just "\r\n" (w/o leading space).

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/PublicInbox/SolverGit.pm b/lib/PublicInbox/SolverGit.pm
index 8fde2329..612f495b 100644
--- a/lib/PublicInbox/SolverGit.pm
+++ b/lib/PublicInbox/SolverGit.pm
@@ -78,6 +78,14 @@ sub extract_diff ($$$$) {
         my ($s, undef) = msg_part_text($part, $ct);
         defined $s or return;
         my $di = {};
+
+        # Email::MIME::Encodings forces QP to be CRLF upon decoding,
+        # change it back to LF:
+        my $cte = $part->header('Content-Transfer-Encoding') || '';
+        if ($cte =~ /\bquoted-printable\b/i && $part->crlf eq "\n") {
+                $s =~ s/\r\n/\n/sg;
+        }
+
         foreach my $l (split(/^/m, $s)) {
                 if ($l =~ $re) {
                         $di->{oid_a} = $1;