Allow selectable labels contents to be selected by mnemonic of another label that targets it
Steps to reproduce
- glade-previewer -f mnemonic_widget_of_selectable_label.ui
- focus will be in the GtkEntry by default
- Press Alt+C to try and activate the mnemonic of "_Characters" which is a label for a selectable label
- Nothing happens in the UI, "Couldn't find a target for a mnemonic activation" is output to stderr
- Press tab, focus will move into the selectable label that is the target of the _Characters label and its contents are selected.
Current behavior
just output of: Couldn't find a target for a mnemonic activation.
Expected outcome
Ideally that the selectable label contents are selected when the mnemonic shown by the label that targets it is activated.
Version information
gtk3-3.24.31