Clearly separate yesno/prompt key modes

qutebrowser/config/configdata.yml

@@ -2379,8 +2379,6 @@ bindings.default:
       <Escape>: leave-mode
     prompt:
       <Return>: prompt-accept
-      y: prompt-accept yes
-      n: prompt-accept no
       <Ctrl-X>: prompt-open-download
       <Shift-Tab>: prompt-item-focus prev
       <Up>: prompt-item-focus prev
@@ -2403,6 +2401,14 @@ bindings.default:
       <Ctrl-H>: rl-backward-delete-char
       <Ctrl-Y>: rl-yank
       <Escape>: leave-mode
+    # FIXME can we do migrations?
+    yesno:
+      <Return>: prompt-accept
+      y: prompt-accept yes
+      n: prompt-accept no
+      <Alt-Y>: prompt-yank
+      <Alt-Shift-Y>: prompt-yank --sel
+      <Escape>: leave-mode
     caret:
       v: toggle-selection
       <Space>: toggle-selection
@@ -2438,7 +2444,7 @@ bindings.default:
     none_ok: true
     keytype: String  # section name
     fixed_keys: ['normal', 'insert', 'hint', 'passthrough', 'command',
-                 'prompt', 'caret', 'register']
+                 'prompt', 'yesno', 'caret', 'register']
     valtype:
       name: Dict
       none_ok: true
@@ -2462,7 +2468,7 @@ bindings.commands:
     none_ok: true
     keytype: String  # section name
     fixed_keys: ['normal', 'insert', 'hint', 'passthrough', 'command',
-                 'prompt', 'caret', 'register']
+                 'prompt', 'yesno', 'caret', 'register']
     valtype:
       name: Dict
       none_ok: true
@@ -2534,10 +2540,8 @@ bindings.commands:
 
     * prompt: Entered when there's a prompt to display, like for download
       locations or when invoked from JavaScript.
-      +
+
-      You can bind normal keys in this mode, but they will be only active when
+    * yesno: Entered when there's a yes/no prompt displayed.
-      a yes/no-prompt is asked. For other prompt modes, you can only bind
-      special keys.
 
     * caret: Entered when pressing the `v` mode, used to select text using the
       keyboard.

qutebrowser/keyinput/modeparsers.py

@@ -133,9 +133,7 @@ class PromptKeyParser(keyparser.CommandKeyParser):
     def __init__(self, win_id, parent=None):
         super().__init__(win_id, parent, supports_count=False,
                          supports_chains=True)
-        # We don't want an extra section for this in the config, so we just
+        self._read_config('yesno')
-        # abuse the prompt section.
-        self._read_config('prompt')
 
     def __repr__(self):
         return utils.get_repr(self)

qutebrowser/mainwindow/prompt.py

@@ -507,8 +507,8 @@ class _BasePrompt(QWidget):
         self._key_grid = QGridLayout()
         self._key_grid.setVerticalSpacing(0)
 
-        # The bindings are all in the 'prompt' mode, even for yesno prompts
+        all_bindings = config.key_instance.get_reverse_bindings_for(
-        all_bindings = config.key_instance.get_reverse_bindings_for('prompt')
+            self.KEY_MODE.name)
         labels = []
 
         for cmd, text in self._allowed_commands():