I checked functionality and reloadUserHighlighter function really reloads user highlighter definition. It looks for a slot where user highlighter is assigned and if it's found, function reloads definition.
I will make some simulation, but call of the function should be enough withtout creating editor and assigning highlighter -- <https://forum.pspad.com/read.php?2,73534,73536> PSPad freeware editor https://www.pspad.com
