commands: add :suspend

Add :suspend to suspend the aerc process, returning to shell. Include
documentation and default Ctrl-z keybinding for it.

Changelog-added: New `:suspend` command bound to `<C-z>` by default.
Signed-off-by: Nojus Gudinavičius <nojus.gudinavicius@gmail.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>

1 files changed, 5 insertions, 0 deletions

diff --git a/main.go b/main.go
index fe3a2e7b..d63c9eef 100644
--- a/main.go
+++ b/main.go
@@ -307,6 +307,11 @@ loop:
 			callback()
 		case <-ui.Redraw:
 			ui.Render()
+		case <-ui.SuspendQueue:
+			err = ui.Suspend()
+			if err != nil {
+				app.PushError(fmt.Sprintf("suspend: %s", err))
+			}
 		case <-ui.Quit:
 			err = app.CloseBackends()
 			if err != nil {