chore: allow passing arguments to scripts/clippy.sh

This makes it possible to run `scripts/clippy.sh --fix --allow-dirty`
to fix clippy warnings automatically.

scripts/clippy.sh

@@ -1,3 +1,9 @@
 #!/bin/sh
 # Run clippy for all Rust code in the project.
-cargo clippy --workspace --all-targets --all-features -- -D warnings
+#
+# To check, run
+#   scripts/clippy.sh 
+#
+# To automatically fix warnings, run
+#   scripts/clippy.sh --fix --allow-dirty
+cargo clippy --workspace --all-targets --all-features "$@" -- -D warnings

src/mimefactory.rs

@@ -1948,9 +1948,23 @@ pub(crate) fn wrap_encrypted_part(encrypted: String) -> MimePart<'static> {
         "multipart/encrypted; protocol=\"application/pgp-encrypted\"",
         vec![
             // Autocrypt part 1
-            MimePart::new("application/pgp-encrypted", "Version: 1\r\n"),
+            MimePart::new("application/pgp-encrypted", "Version: 1\r\n").header(
+                "Content-Description",
+                mail_builder::headers::raw::Raw::new("PGP/MIME version identification"),
+            ),
             // Autocrypt part 2
-            MimePart::new("application/octet-stream", encrypted),
+            MimePart::new(
+                "application/octet-stream; name=\"encrypted.asc\"",
+                encrypted,
+            )
+            .header(
+                "Content-Description",
+                mail_builder::headers::raw::Raw::new("OpenPGP encrypted message"),
+            )
+            .header(
+                "Content-Disposition",
+                mail_builder::headers::raw::Raw::new("inline; filename=\"encrypted.asc\";"),
+            ),
         ],
     )
 }