Add block selection

This implements a block selection mode which can be triggered by holding
Control before starting a selection.

If text is copied using this block selection, newlines will be
automatically added to the end of the lines.

This fixes #526.

1 files changed, 6 insertions, 0 deletions

diff --git a/alacritty_terminal/src/event.rs b/alacritty_terminal/src/event.rs
index f844bf68..171f3ce7 100644
--- a/alacritty_terminal/src/event.rs
+++ b/alacritty_terminal/src/event.rs
@@ -102,6 +102,12 @@ impl<'a, N: Notify + 'a> input::ActionContext for ActionContext<'a, N> {
         self.terminal.dirty = true;
     }
 
+    fn block_selection(&mut self, point: Point, side: Side) {
+        let point = self.terminal.visible_to_buffer(point);
+        *self.terminal.selection_mut() = Some(Selection::block(point, side));
+        self.terminal.dirty = true;
+    }
+
     fn semantic_selection(&mut self, point: Point) {
         let point = self.terminal.visible_to_buffer(point);
         *self.terminal.selection_mut() = Some(Selection::semantic(point));