Show unbound prompt bindings

This makes new commands more discoverable for people with custom bindings, and helps in situations like https://www.reddit.com/r/qutebrowser/comments/tq7628/prompt_trap_closing_the_application_is_the_only/

1 files changed, 15 insertions, 2 deletions

diff --git a/qutebrowser/mainwindow/prompt.py b/qutebrowser/mainwindow/prompt.py
index c8cbe572b..29ea9a45f 100644
--- a/qutebrowser/mainwindow/prompt.py
+++ b/qutebrowser/mainwindow/prompt.py
@@ -536,9 +536,11 @@ class _BasePrompt(QWidget):
             self.KEY_MODE.name)
         labels = []
 
+        has_bindings = False
         for cmd, text in self._allowed_commands():
             bindings = all_bindings.get(cmd, [])
             if bindings:
+                has_bindings = True
                 binding = None
                 preferred = ['<enter>', '<escape>']
                 for pref in preferred:
@@ -547,8 +549,11 @@ class _BasePrompt(QWidget):
                 if binding is None:
                     binding = bindings[0]
                 key_label = QLabel('<b>{}</b>'.format(html.escape(binding)))
-                text_label = QLabel(text)
-                labels.append((key_label, text_label))
+            else:
+                key_label = QLabel(f'<b>unbound</b> (<tt>{html.escape(cmd)}</tt>)')
+
+            text_label = QLabel(text)
+            labels.append((key_label, text_label))
 
         for i, (key_label, text_label) in enumerate(labels):
             self._key_grid.addWidget(key_label, i, 0)
@@ -559,6 +564,14 @@ class _BasePrompt(QWidget):
 
         self._vbox.addLayout(self._key_grid)
 
+        if not has_bindings:
+            label = QLabel(
+                "<b>Note:</b> You seem to have unbound all keys for this prompt "
+                f"(<tt>{self.KEY_MODE.name}</tt> key mode)."
+                "<br/>Run <tt>qutebrowser :CMD</tt> with a command from above to "
+                "close this prompt, then fix this in your config.")
+            self._vbox.addWidget(label)
+
     def _check_save_support(self, save):
         if save:
             raise UnsupportedOperationError("Saving answers is only possible "