:: String -> Int is:exact -package:safe -package:speculate -package:hxt -package:dbus -package:Cabal -package:monads-tf -package:ghc -package:simple-cmd -package:ghc-lib-parser package:vty

wcswidth :: String -> Int
vty Graphics.Text.Width Graphics.Vty.Image
safeWcswidth :: String -> Int
vty Graphics.Text.Width Graphics.Vty.Image
Returns the display width of a string. Assumes all characters with unknown widths are 0 width.