The issue is now fixed in git repository. Regards, Khaled
On Fri, Feb 08, 2013 at 03:48:51AM +0200, Khaled Hosny wrote: > Thanks for reproducing the issue. This is clearly an engine bug (unlike > old TeX, the over/under braces are handled solely by the engine not > constructed by macros). > > I’ll try to debug this now it is reproducible, but whatever fix I can > come up with will not be available before the next XeTeX release (TeX > Live 2013), so It won’t solve your immediate problem, sorry. > > Regards, > Khaled > > On Wed, Feb 06, 2013 at 12:50:17PM +0800, Daniel Greenhoe wrote: > > Khaled, thanks for the great suggestion. I used an open type math font > > (xits-math.otf) and the problem now shows up multiple times. In the > > attached pdf, the shift occurs on pages 3, 8, 9, 10, 19, 21, 23, 28, > > 34, ... > > > > My setup includes these: > > \usepackage[no-config,no-math]{fontspec} % font selection for xelatex > > \usepackage{xunicode} % unicode character support > > \usepackage{amsmath} % AMS math package > > \usepackage{unicode-math} % unicode math support > > \unimathsetup{math-style=ISO,bold-style=ISO,vargreek-shape=TeX} > > \setmathfont{xits-math.otf} > > \setmathfont[range={\mathcal,\mathbfcal},StylisticSet=1]{xits-math.otf} > > > > Attached is a tex file and pdf output. Can anyone else reproduce the > > errors? Any suggestions? > > > > command line: xelatex underbrace > > > > Dan > > > > On Wed, Feb 6, 2013 at 11:43 AM, Khaled Hosny <khaledho...@eglug.org> wrote: > > > I’ve seen this once with OpenType math fonts, but I wasn’t able to > > > reproduce it again. Trying using the same fonts in your minimal example, > > > since it is probably and OpenType math-only issue. > > > > > > Regards, > > > Khaled > > > > > > On Wed, Feb 06, 2013 at 11:13:51AM +0800, Daniel Greenhoe wrote: > > >> I did make a quick minimal example (but not exactly the same as in the > > >> previous email) that uses the underbrace 1000 (?) times. But so far > > >> apparently no success in getting the problem to show itself again. > > >> > > >> If interested, please see attachments. > > >> > > >> Dan > > >> > > >> > > >> On Wed, Feb 6, 2013 at 10:32 AM, Daniel Greenhoe <dgreen...@gmail.com> > > >> wrote: > > >> > For some time now I have been having *sporadic* problems with > > >> > underbraces being shifted to the right by maybe 15mm or so. > > >> > > > >> > The problem is sporadic---it appears sometimes, but on the next > > >> > compile may well have disappeared. The document I am currently working > > >> > on contains several hundred pages. I can try to put together a minimal > > >> > example...but that may be of limited use since it may be difficult to > > >> > get the problem to show itself when I want it to show itself. > > >> > > > >> > So, before I do that, might anyone have an idea of what might be the > > >> > problem? > > >> > > > >> > There is a screen capture of a shift. The right underbrace has been > > >> > shifted far to the right. It should be like the underbrace on the > > >> > left. > > >> > > > >> > Here is my current underbrace macro: > > >> > > > >> > \newcommand{\mcom}[3][c]{\ensuremath{% > > >> > \begin{array}[t]{#1}% > > >> > \underbrace{#2}\\% > > >> > \text{\addfontfeatures{Color=mcom}\scriptsize{#3}}% > > >> > \end{array}% > > >> > }}% > > >> > > > >> > The color mcom is simply defined liked this: > > >> > \definecolor{mcom} {cmyk}{0,0,0,1} > > >> > > > >> > The \mcom macro can be used something like this: > > >> > \[ \mcom{\sin^2(x)+\cos^2(x)=1}{this is a trig. identity} \] > > >> > > > >> > I am compiling with XeLaTeX from a TeXlive distribution. > > >> > Any ideas? > > >> > Many thanks in advance, > > >> > Dan > > > > > > > > > > > > > > > > > >> > > >> > > >> -------------------------------------------------- > > >> Subscriptions, Archive, and List information, etc.: > > >> http://tug.org/mailman/listinfo/xetex > > > > > > > > > > > > -------------------------------------------------- > > > Subscriptions, Archive, and List information, etc.: > > > http://tug.org/mailman/listinfo/xetex > > > > > > > > > -------------------------------------------------- > > Subscriptions, Archive, and List information, etc.: > > http://tug.org/mailman/listinfo/xetex > -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex