Assuming that you are already editing a message (with your usual MUA), you can adapt it to Patcher. This might be useful if you want to reply to a normal message with a Patcher mail and your MUA is unknown to Patcher (see Insinuation). Start by creating the reply, and then adapt it to Patcher.
Adapt an existing message to Patcher by prompting you for the name of a project and possibly a new subject. This function also performs a global diff of your project.
When adapting a message to Patcher, you are always prompted for a new
subject line, although you can just hit Return to leave it empty.
If there is indeed a subject change (that is, if there is both an old
subject and a new one), Patcher uses a project option called
:subject-rewrite-format to modify the subject line. The subject
rewrite format is a string in which a ‘%s’ is replaced with the new
subject, while a ‘%S’ is replaced with the old one.
By default, the subject rewrite format is ‘"%s (was: %S)"’. Note that the subject prefix (see Message Customization) is added in front of the subject line after the subject has been rewritten.