（这是从另一个 RTL ntheorem 问题。
当您在 RTL 语言文本（例如希伯来语）中有一个定理时，使用 XeTeX+ polyglossia(+ bidi)+ ntheorem，定理分隔符会出现在定理编号之前而不是之后：
\documentclass{article}
\usepackage{ntheorem}
\theoremseparator{:}
\newtheorem{theorem}{משפט}
\usepackage{polyglossia}
\setdefaultlanguage[numerals=arabic]{hebrew}
\newfontfamily\hebrewfont{David} % You may need David CLM
\begin{document}
\begin{theorem}
משפט מחוזי מאוד.
\end{theorem}
\end{document}
句号分隔符也会发生同样的事情。使用 MikTeX 2.9。结果\listfiles：
*File List*
article.cls 2007/10/19 v1.4h Standard LaTeX document class
size10.clo 2007/10/19 v1.4h Standard LaTeX file (size option)
ntheorem.sty 2011/02/16 1.31
ifthen.sty 2001/05/26 v1.1c Standard LaTeX ifthen package (DPC)
polyglossia.sty 2010/07/27 v1.2.0a Babel replacement for XeLaTeX
etoolbox.sty 2011/01/03 v2.1 e-TeX tools for LaTeX
etex.sty 1998/03/26 v2.0 eTeX basic definition package (PEB)
makecmds.sty 2009/09/03 v1.0a extra command making commands
fontspec.sty 2011/02/26 v2.1f Advanced font selection for XeLaTeX/LuaLaTeX
expl3.sty 2011/06/19 v2478 L3 Experimental code bundle wrapper
l3names.sty 2011/06/19 v2478 L3 Experimental namespace for primitives
l3bootstrap.sty 2011/06/19 v2478 L3 Experimental bootstrap code
calc.sty 2007/08/22 v4.3 Infix arithmetic (KKT,FJ)
l3basics.sty 2011/07/04 v2493 L3 Experimental basic definitions
l3expan.sty 2011/06/20 v2480 L3 Experimental argument expansion
l3tl.sty 2011/07/09 v2498 L3 Experimental token lists
l3seq.sty 2011/06/19 v2478 L3 Experimental sequences and stacks
l3int.sty 2011/06/19 v2478 L3 Experimental integers
l3quark.sty 2011/06/19 v2478 L3 Experimental quarks
l3prg.sty 2011/07/06 v2495 L3 Experimental control structures
l3clist.sty 2011/07/09 v2498 L3 Experimental comma separated lists
l3token.sty 2011/07/02 v2491 L3 Experimental token manipulation
l3prop.sty 2011/06/19 v2478 L3 Experimental property lists
l3msg.sty 2011/06/19 v2478 L3 Experimental messages
l3io.sty 2011/06/19 v2478 L3 Experimental input-output operations
l3file.sty 2011/06/19 v2478 L3 Experimental file operations
l3skip.sty 2011/06/19 v2478 L3 Experimental dimensions and skips
l3box.sty 2011/06/19 v2478 L3 Experimental boxes
l3keyval.sty 2011/06/19 v2478 L3 Experimental key-value parsing
l3keys.sty 2011/06/19 v2478 L3 Experimental key-value interfaces
l3fp.sty 2011/06/19 v2478 L3 Experimental floating-point operations
l3luatex.sty 2011/06/19 v2478 L3 Experimental LuaTeX-specific functions
l3toks.sty 2011/06/19 v2478 L3 Experimental token registers
xparse.sty 2011/07/02 v2492 L3 Experimental document command parser
xkeyval.sty 2008/08/13 v2.6a package option processing (HA)
xkeyval.tex 2008/08/13 v2.6a key=value parser (HA)
fontspec-patches.sty 2011/02/26 v2.1f Advanced font selection for XeLaTeX/Lu
aLaTeX
fixltx2e.sty 2006/09/13 v1.1m fixes to LaTeX
fontenc.sty
eu1enc.def 2010/05/27 v0.1h Experimental Unicode font encodings
eu1lmr.fd 2009/10/30 v1.6 Font defs for Latin Modern
xunicode.sty 2010/11/06 v0.96 provides access to latin accents and many othe
r characters in Unicode lower plane
fontspec.cfg
gloss-hebrew.ldf polyglossia: module for hebrew
bidi.sty 2011/03/21 v1.1.6 <commit 145> Bidirectional typesetting in pla
in TeX and LaTeX
iftex.sty 2010/07/25 v0.2 Provides if(tex) conditional for PDFTeX, XeTeX,
and LuaTeX
loadingorder-bidi.def 2010/07/25 v0.5 making sure that bidi is the last pack
age loaded
xetex-bidi.def 2010/08/01 v0.8 bidi adaptations for XeTeX engine
footnote-xetex-bidi.def 2010/07/25 v0.5 bidi footnote macros for XeTeX engin
e
article-xetex-bidi.def 2010/07/25 v0.4 bidi adaptations for standard article
class for XeTeX engine
hebrewcal.sty 2008/07/01 v2.4 Hebrew calendar for polyglossia (adapted from
hebcal.sty in Babel)
cal-util.def
babel-hebrewalph.def 2010/03/02 Babel definitions for Hebrew numerals
Adapted from hebrew.ldf (2005/03/30 v2.3h)
答案1
这很奇怪，但它似乎依赖于字体。使用“New Peninim MT”字体时，我可以把冒号放在正确的位置，而使用“David CLM”时则不行。
但是，下面的方法似乎有效：
\theoremseparator{\textup{:}}
尽管如此，还是建议更新到最新版本的polyglossia、bidi和。fontspec