Thanks for the detailed answer Ulrik, although it seems like there's not much I can do but learn LuaLaTeX in order to get the documents as I want them to be. :) Would it be possible to get the LuaLaTeX code you used in order to compile the document as a starting-point, as I've never seen or tried it before?
Best regards, D. > Date: Mon, 16 Aug 2010 00:15:35 +0200 > From: [email protected] > To: [email protected] > Subject: Re: [XeTeX] Problems with thickness of \frac rule and width of > accents (\hat) with XeLaTeX > > Hi, > > I tested it with both XeLaTeX and LuaLaTeX (both from TL2010 pretest). > In short, the problem only occurs in XeLaTeX, but not in LuaLaTeX, > despite using the same macro packages and fonts for both engines. > > I do not really understand the problem with the fraction rule thickness. > It probably should be the same on both engines (despite conceptual > differences), as it should be based on the same OpenType parameter > RadicalRuleThickness, but it seems to be different nonetheless: > > XeLaTeX: > .......\kern4.7461 > .......\rule(0.47998+0.0)x* > .......\kern2.97542 > > LuaLaTeX: > .......\kern3.43199 > .......\rule(0.79199+0.0)x* > .......\kern2.98799 > > The LuaTeX value of 0.792pt at 12pt matches the scaled value of 0.66pt > at 10pt of the OpenType font parameter for XITS Math. > > The XeTeX value of 0.48pt at 12pt matches the scaled value of 0.4pt > at 10pt, which is suspiciously similar to the default rule thickness > of CM fonts. I don't know how this comes about. I'm not sure if this > is an engine bug or if it could be caused by a macro problem. > > As for the overly wide hat, this is obviously an engine bug in XeTeX. > The behavior is clearly wrong and the problem does not occur in LuaTeX. > > I believe I have seen a similar problem before in XeTeX, which had > been fixed by Jonathan during a lunch break at EuroTeX 2009 last year. > I wonder if an old bug has resurfaced now or if anything went wrong > merging the bug fixes (or if it was a different bug that was fixed). > > Regards, Ulrik > > > P.S: On second thought, I'm not sure any more if this was really > the same bug that was fixed or just a similar one. It could have been > about the positioning of math accents (e.g. centering \dot and \ddot) > rather than the width of wide math accents, but it also had to do > with an incorrect calculation of the size based on the subscripts. > > > On 08/15/2010 09:37 PM, drgz drgz wrote: > > Anyhow, I'm playing around with XeLaTeX (the newest version coming with > > MikTeX) trying to compile some documents. And almost everything is as it > > should be, except the thickness of the rule in \frac (does not get any > > thicker) and the width of the \hat accent (which gets wider than it should). > > I've attached a link to a compiled PDF which illustrates what I > > experience - see http://folk.ntnu.no/mitrevsk/temp/xelatex/ex.pdf > > > > No matter which OTF font with unicode-math support I select I experience > > this problem when I compile with XeLaTeX. Is there any way to fix this ? > > > -------------------------------------------------- > Subscriptions, Archive, and List information, etc.: > http://tug.org/mailman/listinfo/xetex
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