[v][sf]printf additions (#, E, g, G)

Hi, I've wished there was a *printf() float specifier that wouldn't include trailing zeros/point, as simply converting to string (echo, %s, etc.) can result in scientific notation, which I *don't* want (%g in convert_to_string()). The only other way that would result in what I want is number_format() with my "no-extra-zeros option" patch. ;-) So I was originally looking for how to NOT pad %f to the specified precision, then I thought why not add more of the stuff from C? (And I see it's marked "not done" in formatted_print.c.) Can/should I go ahead and add support for the # flag/specifier, g/G, and E (the missing compliment to e)? Make everything work like C, except # used with f/F, which would mean "remove trailing 0's/point" -- as C's behavior with # and f (add point even when precision=0?) can be done in PHP. (I assume C's is for when precision is specified with * + parameter?) Thoughts? Thanks, Matt