Thank you for submitting your patch, Philipp. I have these reservations with it:
1. For all users, it can add newlines in text that cause, for example, URLs to break. 2. For existing users, it may require changes to their existing nmh environments. 3. It does not add new functionality to nmh. Its functionality is a proper subset of a pre-existing feature. 4. Given 3, if implemented within nmh, an alternative could be to internally simply wrap a suitable use of the pre-existing feature. From the user point of view, the result would be the same. I have additional though lesser concerns, such as the name of the switch and the support effort required, mostly related to 1. and 2. above. David