Add additional flagging functionality

More mail flags can now be set, unset, and toggled, not just the
read/seen flag.

This functionality is implemented with a new `:flag` and `:unflag`
command, which are extensions to the matching `:read` and `:unread`
commands, adding support for different flags.  In fact, the
`read`/`unread` commands are now recognized aliases to `flag`/`unflag`.
The new commands are also well documented in aerc(1).

The change mostly extends the previous read/unread setting functionality
by adding a selection for the flag to change.

1 files changed, 4 insertions, 3 deletions

diff --git a/worker/types/messages.go b/worker/types/messages.go
index 475a7aa..c044667 100644
--- a/worker/types/messages.go
+++ b/worker/types/messages.go
@@ -113,10 +113,11 @@ type DeleteMessages struct {
 	Uids []uint32
 }
 
-// Marks messages as read or unread
-type ReadMessages struct {
+// Flag messages with different mail types
+type FlagMessages struct {
 	Message
-	Read bool
+	Enable bool
+	Flag models.Flag
 	Uids []uint32
 }