Zhao, Bingfeng wrote:

Hi, list I'm new to WinHugs, what's wrong with isUpper of my WinHugs?

Hugs> filter isUpper "ABCDEfgh" ERROR - Undefined variable "isUpper" Hugs> filter Char.isUpper "ABCDEfgh" ERROR - Undefined qualified variable "Char.isUpper" Hugs> :version -- Hugs Version Sep 2006

Same with Hugs on Linux; it seems you need to do ":load Char" first, and use isUpper unqualified (as you did the first time). Hugs confuses me a little here too. Isaac