Converting byte position to character position

I am fairly sure there is a function somewhere in glib or gtk that
will actually return the char position given a byte position in a
utf-8 string.

And, indeed, maping at least some of the g_utf8 family of functions
would probably be helpful.

Say, g_utf8_pointer_to_offset(utf8,utf8+byteoffset).

It might be argued that the GTK module should do this conversion
automatically.

-- 
Per Hedbor