allout-encryption-ciphertext-rejection-regexps is a variable defined in `allout.el'.
Its value is

  • Automatically becomes buffer-local when set.

Variable for regexps matching plaintext to remove before encryption.

This is used to detect strings in encryption results that would
register as allout mode structural elements, for example, as a
topic prefix.

Entries must be symbols that are bound to the desired regexp values.

Encryptions that result in matches will be retried, up to
`allout-encryption-ciphertext-rejection-limit' times, after which
an error is raised.