visual-mode: deselect messages after performing command

In order to better align to vim functionality: deselect visual mode
selections after performing a command on the selection. This patch also
introduces a new command to allow for re-selecting (remarking) the
previous selection set so that commands can be chained together. The
deselection only applies to msg commands that *do not* move the message
from the store (those types of commands already deselect):
- read/unread
- flag/unflag
- modify-labels
- copy
- pipe

Previous usage to mark several messages as read and deselect all:
Vjjj:read<Enter>:unmark -a<Enter>

New usage, similar to vim:
Vjjj:read<Enter>

To chain a command together:
Vjjj:read<Enter>:remark<Enter>{next command}<Enter>

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/msgstore.go b/lib/msgstore.go
index 6774f59..6ce1702 100644
--- a/lib/msgstore.go
+++ b/lib/msgstore.go
@@ -26,6 +26,7 @@ type MessageStore struct {
 
 	//marking
 	marked         map[uint32]struct{}
+	lastMarked     map[uint32]struct{}
 	visualStartUid uint32
 	visualMarkMode bool
 
@@ -558,6 +559,10 @@ func (store *MessageStore) Unmark(uid uint32) {
 	delete(store.marked, uid)
 }
 
+func (store *MessageStore) Remark() {
+	store.marked = store.lastMarked
+}
+
 // ToggleMark toggles the marked state on a MessageInfo
 func (store *MessageStore) ToggleMark(uid uint32) {
 	if store.visualMarkMode {
@@ -573,6 +578,7 @@ func (store *MessageStore) ToggleMark(uid uint32) {
 
 // resetMark removes the marking from all messages
 func (store *MessageStore) resetMark() {
+	store.lastMarked = store.marked
 	store.marked = make(map[uint32]struct{})
 }