[MH-E] overlay-arrow-string in folder buffer

[Katsumi Yamaoka]

Hi,

MH-E folks, please try running MH-E in tty.  In September 2008 in
the fj.editor.emacs newsgroup, one reported that it is annoying
that ">" hides the message numbers as follows:

1001
>002+
1003

It is because MH-E uses overlay-arrow and `overlay-arrow-string'
is hard-coded to ">".  So I offered to him this hook then:

(add-hook 'mh-folder-mode-hook
          (lambda nil
            (setq overlay-arrow-string "")))

Isn't it better to mention this in the manual, to make it be ""
in non-window systems, or to make it customizable?

Regards,