Re: Supporting readline editing in Mutt entry fields

[Michael Elkins]

It has been a very long time since I looked at readline, but the 
time the problem was that readline wants control of drawing on the 
screen, which conflicts with mutt's use of the curses library.  
readline is more for line-oriented input than entire 
screen-oriented applications.

You'd also have to rewrite the completion functions to integrate 
with readline.