Restore STDIN during execute-silent

This allows users to terminate the process with CTRL-C when it hangs.

src/terminal.go

@@ -1309,7 +1309,9 @@ func (t *Terminal) executeCommand(template string, forcePlus bool, background bo
 		t.redraw()
 		t.refresh()
 	} else {
+		t.tui.Pause(false)
 		cmd.Run()
+		t.tui.Resume(false)
 	}
 }
 

src/tui/tcell.go

@@ -382,12 +382,16 @@ func (r *FullscreenRenderer) GetChar() Event {
 	return Event{Invalid, 0, nil}
 }
 
-func (r *FullscreenRenderer) Pause(bool) {
-	_screen.Fini()
+func (r *FullscreenRenderer) Pause(clear bool) {
+	if clear {
+		_screen.Fini()
+	}
 }
 
-func (r *FullscreenRenderer) Resume(bool) {
-	r.initScreen()
+func (r *FullscreenRenderer) Resume(clear bool) {
+	if clear {
+		r.initScreen()
+	}
 }
 
 func (r *FullscreenRenderer) Close() {