Returns true if there is selected text in a display-pane.
capi
display-pane-selection-p pane => selectionp
| pane⇩ | 
A display-pane. | 
| selectionp | 
A boolean. | 
The function display-pane-selection-p returns t if there is a selected region in pane and nil otherwise.
set-display-pane-selection
display-pane
display-pane-selected-text
display-pane-selection
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:32:42