- mu4e-main.el: mu4e-update-mail-show-window retrieves mail / updates
database, show output in split window (actual work is done by...:)
- mu4e.el: mu4e-update-mail retrieves mail, updates database,
asynchronously. Optionally, show output in a buffer
when `mu4e-update-interval' is non-nil and some integer, it calls
mu4e-update-mail every so many seconds.
- mu4e.texi: document this
- TODO: updated
etc. a buffer. From the docstring:
"What do to when user leaves the headers view (e.g. quit or doing
a new search). Value is one of the following symbols:
- ask (ask the user whether to ignore the marks)
- apply (automatically apply the marks before doing anything else)
- ignore (automatically ignore the marks without asking)."
the new mu4e-handle-marks uses this.