+
+ <b>index.repaired</b>
+ Some messages arrive in forms that are confusing to view; they can
+ be mangled by mail transport agents, or the sending mail user agent
+ may structure them in a way that is confusing. If notmuch knows how
+ to both detect and repair such a problematic message, it will do so
+ during indexing.
+
+ If it applies a message repair during indexing, it will use the <b>in-</b>
+ <b>dex.repaired</b> property to note the type of repair(s) it performed.
+
+ <b>index.repaired=skip-protected-headers-legacy-display</b> indicates that
+ when indexing the cleartext of an encrypted message, notmuch skipped
+ over a "legacy-display" text/rfc822-headers part that it found in
+ that message, since it was able to index the built-in protected
+ headers directly.
+
+ <b>index.repaired=mixedup</b> indicates the repair of a "Mixed Up" en‐
+ crypted PGP/MIME message, a mangling typically produced by Micro‐
+ soft's
+ <u>https://tools.ietf.org/html/draft-dkg-openpgp-pgpmime-message-mangling</u>
+ for more information.