Consistent escape mechanism for Unicode characters?

[Ethan M. <merritt@u.washington.edu>]

With the addition of UTF-8 support to the postscript terminal,
we are reaching the point where users might logically want to
specify individual Unicode characters in a terminal-independent
way.  If your environment is natively UTF-8 this shouldn't be a problem.
But some people may not have that option.

In particular I am thinking of the FAQ entries for
Planck's constant and the solar mass symbol.

For example
	set label "Planks's constant = ℏ"

Currently the SVG and PNG drivers simply pass through the escaped
sequence to the underlying libraries, which correctly look for the
corresponding Unicode character in the current font.

Would it be reasonable to make this same form acceptable to the
wxt, post, x11 and other terminals?

-- 
Ethan A Merritt