highlight-errors in drscheme:rep:text%
Call this method to highlight errors associated with this repl.
See also
reset-highlighting, and
highlight-errors/exn.
This method highlights a series of dis-contiguous ranges in the editor.
It puts the caret at the location of the first error.
(-> voidsenda-drscheme:rep:texthighlight-errorslocs)
locs: (listof (list (instance (implementstext:basic<%>)) small-integer small-integer))