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editor: Do redo the emacs way

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- Less surprising for emacs users.
- Safer since doesn't lose any history when editing after undoing.
This commit is contained in:
Andrew Hamilton 2022-04-29 19:32:05 +10:00
parent 8b65489577
commit 80c05a1dfd
1 changed files with 2 additions and 9 deletions
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11
diff_edit/editor.py
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@ -732,7 +732,7 @@ class Editor:
def add_to_history(self):
if self.history_position < len(self.history):
self.history[self.history_position:] = []
self.history.extend(reversed(self.history[self.history_position:-1]))
self.history.append((self.text_widget.lines.copy(), self._cursor_x, self._cursor_y))
self.history_position = len(self.history)
@ -746,13 +746,6 @@ class Editor:
self.history_position -= 1
self.text_widget[:], self._cursor_x, self._cursor_y = self.history[self.history_position]
def redo(self):
if self.history_position >= len(self.history) - 1:
self.ring_bell()
return
self.history_position += 1
self.text_widget[:], self._cursor_x, self._cursor_y = self.history[self.history_position]
def toggle_overwrite(self):
self.is_overwriting = not self.is_overwriting
@ -904,7 +897,7 @@ class Editor:
terminal.CTRL_L: center_cursor, terminal.ALT_SEMICOLON: comment_lines,
terminal.ALT_c: cycle_syntax_highlighting, (terminal.CTRL_X, terminal.CTRL_C): quit,
terminal.ESC: show_parts_list, terminal.CTRL_K: delete_line, terminal.TAB: tab_align,
(terminal.CTRL_Q, terminal.TAB): insert_tab, terminal.CTRL_UNDERSCORE: redo,
(terminal.CTRL_Q, terminal.TAB): insert_tab, terminal.CTRL_UNDERSCORE: undo,
terminal.CTRL_Z: undo, terminal.CTRL_G: abort_command, terminal.INSERT: toggle_overwrite,
(terminal.CTRL_C, ">"): indent, (terminal.CTRL_C, "<"): dedent}