Allow pressing F2 in the tags field of the edit metadata dialog to launch the tags editor

src/calibre/gui2/metadata/basic_widgets.py

@@ -1360,6 +1360,7 @@ class TagsEdit(EditWithComplete, ToMetadataMixin):  # {{{
             'or phrases, separated by commas.')
     FIELD_NAME = 'tags'
     data_changed = pyqtSignal()
+    tag_editor_requested = pyqtSignal()
 
     def __init__(self, parent):
         EditWithComplete.__init__(self, parent)
@@ -1417,6 +1418,13 @@ class TagsEdit(EditWithComplete, ToMetadataMixin):  # {{{
                 allow_case_change=True)
         return True
 
+    def keyPressEvent(self, ev):
+        if ev.key() == Qt.Key_F2:
+            self.tag_editor_requested.emit()
+            ev.accept()
+            return
+        return EditWithComplete.keyPressEvent(self, ev)
+
 # }}}
 
 

src/calibre/gui2/metadata/single.py

@@ -235,6 +235,7 @@ class MetadataSingleDialogBase(QDialog):
         self.tags_editor_button.setToolTip(_('Open Tag editor'))
         self.tags_editor_button.setIcon(QIcon(I('chapters.png')))
         self.tags_editor_button.clicked.connect(self.tags_editor)
+        self.tags.tag_editor_requested.connect(self.tags_editor)
         self.clear_tags_button = QToolButton(self)
         self.clear_tags_button.setToolTip(_('Clear all tags'))
         self.clear_tags_button.setIcon(QIcon(I('trash.png')))