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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> When I updated fontspec to v2.1, I find it includes xunicode by default. This makes an error “Command `\Finv' already defined.” when using amssymb (or some other font package) AFTER fontspec. I know it will be fine if fontspec is loaded later. However, it makes classes for general purpose using fontspec (for me, all ctex*.cls in ctex pkg.) clash, since it’s impossible to decide when and whether math packages are loaded. A simplified example:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>% foo.cls by Alice<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\ProvidesClass{foo}<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\RequirePackage{fontspec}<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\endinput<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>% bar.tex by Bob<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\documentclass{foo}<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\usepackage{amssymb} % oops!<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\begin{document}<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>Test only.<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>\end{document}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Is there any suggestions for this problem? I guess it would be OK if fontspec provides an extra option that suppress xunicode for a future load.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Many thanks.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=right style='text-align:right'><span lang=EN-US>Leo<o:p></o:p></span></p></div></body></html>