🚀 go-pugleaf

David M. Watson, Jr. writes:
 > What's the best way to make gnus article buffers interpret backspace
 > characters by overprinting, for example when an underline is indicated
 > by character; control-H; underscore?
 > 
 > It's annoying when words that look beautifully underlined in rn are
 > unreadable in gnus, but this should be easy enough to fix.

It should be, but it isn't, for two reasons:

  1. Emacs highlighting support is minimal.  Kludges are necessary to
     get Emacs to highlight a particular region of text, and these
     kludges usually require you to clear the current window for each
     new page, which means no screen update optimization. This will be a
     nightmare at low baud rates.

  2. Emacs' window management code behaves strangely, at least to me.  It
     is difficult to determine what the value of window-start is going to
     be at next redisplay, and you need to know this in order to do the
     highlighting kludge mentioned above.