On Fri, Oct 30, 2009 at 09:02:30AM +0100, Taco Hoekwater wrote: > > Hi, > > Khaled Hosny wrote: > > On Tue, Oct 27, 2009 at 12:06:09PM +0100, Taco Hoekwater wrote: > >> * Math delimiters and large operators in new MATH fonts no > >> longer apply the italic correction (this fixes placements > >> of super- and subscripts on such items for those fonts). > > > > This doesn't sound the correct way to me. The described algorithm in > > MATH specification is to set subscripts immediately after the base > > (without italic correction) and shift superscripts horizontally by the > > amount of italic correction, then apply math kerning if present, this > > way fonts with no math kerning will still give acceptable output and > > need for math kerning will be minimized. > > Well, I am clearly doing something wrong, because both the old and > new outputs look crappy. I'll rethink this.
Office 2007 seems to handle sub/superscripts of big operators differently; superscript is placed immediately after base glyph while a negative kern equal to italic correction is inserted between base and subscript i.e. the reverse of what is described in the spec, and math kerning is ignored completely. So I think the current positioning of superscripts is correct, only subscripts need to be fixed, though I'm not really sure about any of those conclusions :) Regards, Khaled -- Khaled Hosny Arabic localiser and member of Arabeyes.org team Free font developer
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