/bin/sh vi-mode command line editing pathname expansion

[Nathan Weeks]

The following vi-mode command line editing features seem to be
missing from FreeBSD 8.0's /bin/sh.

=
    Display the possible shell word expansions (see wordexp )
    of the bigword at the current command line position...
\
    Perform pathname expansion (see Pathname Expansion )
    on the current bigword, up to the largest set of characters
    that can be matched uniquely...
*
    Perform pathname expansion on the current bigword and
    insert all expansions into the command to replace the current
    bigword, with each expansion separated by a single <space>...

Full descriptions are here:

http://www.opengroup.org/onlinepubs/9699919799/utilities/sh.html

This would be handy to have out-of-the-box so one doesn't have
to install bash or ksh to have a POSIX shell that can do this kind
of pathname expansion in an interactive shell.

-- 
Nathan Weeks