Delete in front of the cursor when a negative argument has been given to backspace.

1 files changed, 7 insertions, 1 deletions

diff --git a/prompt_toolkit/key_binding/bindings/named_commands.py b/prompt_toolkit/key_binding/bindings/named_commands.py
index 6aaa0c40..dff8cb4a 100644
--- a/prompt_toolkit/key_binding/bindings/named_commands.py
+++ b/prompt_toolkit/key_binding/bindings/named_commands.py
@@ -188,7 +188,13 @@ def delete_char(event):
 @register('backward-delete-char')
 def backward_delete_char(event):
     " Delete the character behind the cursor. "
-    deleted = event.current_buffer.delete_before_cursor(count=event.arg)
+    if event.arg < 0:
+        # When a negative argument has been given, this should delete in front
+        # of the cursor.
+        deleted = event.current_buffer.delete(count=-event.arg)
+    else:
+        deleted = event.current_buffer.delete_before_cursor(count=event.arg)
+
     if not deleted:
         event.cli.output.bell()