+ '+~' => ["user$sign{_}name exp$sign{_}and", 'mi ext'], # common emacs => '+&'
+ '+!' => ["cmd expand", 'mi ext'],
+ '+@' => ["host$sign{_}name exp$sign{_}and", 'mi ext'],
+ '+$' => ["variable expand", 'mi ext'],
+ '+^' => ["history expand", 'co ext'],
+ '+/' => ["filename expand", 'ci ext'],
+