Support esc to abort hinting

qutebrowser/app.py

@@ -242,6 +242,8 @@ class QuteBrowser(QApplication):
             self.mainwindow.status.keystring.setText)
         self._keyparsers["hint"].fire_hint.connect(
             self.mainwindow.tabs.cur.fire_hint)
+        self._keyparsers["hint"].abort_hinting.connect(
+            self.mainwindow.tabs.cur.abort_hinting)
         self._keyparsers["hint"].keystring_updated.connect(
             self.mainwindow.tabs.cur.handle_hint_key)
         self.mainwindow.tabs.hint_strings_updated.connect(

qutebrowser/browser/curcommand.py

@@ -185,6 +185,11 @@ class CurCommandDispatcher(QObject):
         """Fire a completed hint."""
         self._tabs.currentWidget().hintmanager.fire(keystr)
 
+    @pyqtSlot()
+    def abort_hinting(self):
+        """Abort hinting."""
+        self._tabs.currentWidget().hintmanager.stop()
+
     @pyqtSlot(str, int)
     def search(self, text, flags):
         """Search for text in the current page.

qutebrowser/browser/hints.py

@@ -41,10 +41,20 @@ class HintKeyParser(KeyParser):
     Signals:
         fire_hint: When a hint keybinding was completed.
                    Arg: the keystring/hint string pressed.
+        abort_hinting: Esc pressed, so abort hinting.
     """
 
     supports_count = False
     fire_hint = pyqtSignal(str)
+    abort_hinting = pyqtSignal()
+
+    def _handle_modifier_key(self, e):
+        """We don't support modifiers here, but we'll handle escape in here."""
+        if e.key() == Qt.Key_Escape:
+            self._keystring = ''
+            self.abort_hinting.emit()
+            return True
+        return False
 
     def execute(self, cmdstr, count=None):
         """Handle a completed keychain."""