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-rw-r--r--actionmailer/lib/action_mailer/vendor/tmail/quoting.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionmailer/lib/action_mailer/vendor/tmail/quoting.rb b/actionmailer/lib/action_mailer/vendor/tmail/quoting.rb
index 36bf03f0a3..a56e2267ee 100644
--- a/actionmailer/lib/action_mailer/vendor/tmail/quoting.rb
+++ b/actionmailer/lib/action_mailer/vendor/tmail/quoting.rb
@@ -33,7 +33,7 @@ module TMail
part.body(to_charset, &attachment_presenter)
elsif header.nil?
""
- elsif header.main_type == "text"
+ elsif !attachment?(part)
part.unquoted_body(to_charset)
else
attachment_presenter.call(header["name"] || "(unnamed)")