Usurp more of the utils code than can be re-used without further dependencies in
helpers.
Split off specific parts in their own file.
After the helper/utils changes, update the rest of mu4e to take the changes into
account.
Make mu4e-view-use-gnus obsolete (it's the default now), and add a
variable mu4e-view-use-old (which must be set before starting mu4e).
Update documentation / mentions.
Load the correct view when starting mu4e, so people can customize
e.g. the keymap.
Add some sanity checking.
Some completion engines (like "flx") decorate the strings that they
return. If MU4E passes such a string down to MU, the "format" call
preserves the text properties in the generated S-expression, producing
an invalid query. MU4E itself has no interest in those decorations,
so strip them out as early as possible from all prompts that use
mu4e-completing-read-function.
Use "_" as the title of that section so that it is less distracting
when sections are collapsed to get an overview of the library.
Using a separate section is useful because it reduces the risk of
accidentally into the middle of a library.
Placing two semicolons on an otherwise empty line helps to logically
"connect" the surrounding "paragraphs", which in (only) some cases
makes sense.
Previously the three paragraphs of the permission statement were not
connected to each other like this, which is perfectly fine. However
the preceding "This file is not part of GNU Emacs." line was connected
to the first paragraph, which does not make sense considering that the
latter is not connected two the second paragraph, which it relates to
more.
Once those two semicolons are gone, it also makes sense to remove
those from the second line.
* mu4e/mu4e-context.el (mu4e-context-switch): Do it.
* mu4e/mu4e-contrib.el (mu4e-view-mode-hook): Do it.
(mu4e-headers-mode-hook): Do it.
* mu4e/mu4e-icalendar.el (mu4e-icalendar-reply-ical): Do it.
* mu4e/mu4e-utils.el (mu4e~start): Do it.
(mu4e-split-ranges-to-numbers): Do it.
Load org support by default, unless mu4e-org-support is set to nil.
Turn off speedbar support by default (set mu4e-speedbar-support to t to
re-enable it).
Move the non-obsolete org stuff to mu4e-org. Rename some things from
org-mu4e to mu4e-org.
Remove org-old-mu4e.el
When HTML emails contain references to remote images, retrieving these images
leaks informationo. For example, the sender can see when I openend the email
and from which computer (IP address). For this reason, it is preferrable to
not retrieve images.
