[Patch] user-specifiable word-separators

This patch allows the user to specify what characters are considered word separators for the purposes of the next and previous word commands in copy mode (bound to M-b and M-f in emacs-copy; w, b and e in vi-copy). Since the space character is no longer guaranteed to be one of the word separator

Re: [Patch] Replace output mode with copy mode

Micah Cowan wrote: + screen_write_start(ctx, wp, data-screen); + ox = data-screen.cx; + oy = data-screen.cy; + + /* If the history has changed, draw the top line. + * (If there's any history at all, it has changed.) */ + if (screen_hsize(data-backing)) +