Implement ^K for command mode

babi.py

@@ -360,6 +360,8 @@ class Status:
             elif isinstance(key.wch, str) and key.wch.isprintable():
                 set_buf(buf()[:pos] + key.wch + buf()[pos:])
                 pos += 1
+            elif key.keyname == b'^K':
+                set_buf(buf()[:pos])
             elif key.keyname == b'^R':
                 reverse_s = ''
                 reverse_idx = lst_pos

tests/command_mode_test.py

@@ -63,6 +63,18 @@ def test_key_navigation_in_command_mode():
         h.press('Enter')
 
 
+def test_command_mode_ctrl_k(tmpdir):
+    with run() as h, and_exit(h):
+        trigger_command_mode(h)
+        h.press('hello world')
+        h.await_text('\nhello world\n')
+        for _ in range(6):  # TODO: ^Left
+            h.press('Left')
+        h.press('^K')
+        h.await_text('\nhello\n')
+        h.press('Enter')
+
+
 def test_save_via_command_mode(tmpdir):
     f = tmpdir.join('f')