These are functions for getting and setting properties of buttons.
Often these are used by a button's invocation function to determine
what to do.
Where a button parameter is specified, it means an object
referring to a specific button, either an overlay (for overlay
buttons), or a buffer-position or marker (for text property buttons).
Such an object is passed as the first argument to a button's
invocation function when it is invoked.
Call button's action property (i.e., invoke it). If
use-mouse-action is non-nil, try to invoke the button's
mouse-action property instead of action; if the button
has no mouse-action property, use action as normal.
— Function: button-label button
Return button's text label.
— Function: button-type button
Return button's button-type.
— Function: button-has-type-p button type
Return t if button has button-type type, or one of
— Function: button-at pos
Return the button at position pos in the current buffer, or nil.
— Function: button-type-put type prop val
Set the button-type type's prop property to val.
— Function: button-type-get type prop
Get the property of button-type type named prop.
— Function: button-type-subtype-p type supertype
Return t if button-type type is a subtype of supertype.