I know per my question remove trailing dashes in foldtext that I can remove the trailing dashes from collapsed fold lines. When a fold is 'open', the sign column has pipe characters '|'. I looked at the help page and tried searching for fold, but no luck. Is there any way to change the pipe characters to something else?
help foldcolumn says
&fdc is the width of the column.
help folding with a search for 'pipe' and 'character' unfortunately brings up nothing.