Re: Emphasize the character to be typed next in *Completions*

[Richard Stallman]

    > IMHO it would be better with a highlighting like the one in incremental 
    > search, i.e. highlight the part of the possible completions that match 
    > what is in the minibuffer. It gives the same information to the user, 
    > but is more familiar.

    I also implemented a version which highlights the common perfix string
    in completions. And I felt that the visual feedback is too strong.

I agree.  To emphasize the part that is not informative is not a
useful feature.

We want to keep various Emacs features coherent, all else being equal,
but we should not make a user interface hard to use merely to follow
some other feature.

    Putting bold face on a character has good balance between too much
    highlighting and indistinct representation.

    >From my view, Using box face property or underline face property may
    be good...but I have not tried yet.

    Should I provide all versions and make them choose-able?

Please implement the ideas that you think might be good to use,
then try them and see if they are good.

Please don't bother supporting the bad interfaces.