我对最新版本的 babel (3.10) 有问题。如果我编译此文件：
\documentclass{article}
\usepackage[ukenglish]{babel}
\pagestyle{empty}
\begin{document}
Hello world!
\end{document}
然后我收到消息
LaTeX Error: Command \setlocale already defined.
这是为什么？
这是我的日志文件（这次，我使用西班牙语而不是 ukenglish）：
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (MiKTeX 2.9.6350 64-bit) (preloaded format=pdflatex 2017.5.8) 29 MAY 2017 11:13
entering extended mode
**./test.tex
(test.tex
LaTeX2e <2017-04-15>
Babel <3.9t> and hyphenation patterns for 74 language(s) loaded.
("C:\Program Files\MiKTeX 2.9\tex\latex\base\article.cls"
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
("C:\Program Files\MiKTeX 2.9\tex\latex\base\size10.clo"
File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
)
\c@part=\count79
\c@section=\count80
\c@subsection=\count81
\c@subsubsection=\count82
\c@paragraph=\count83
\c@subparagraph=\count84
\c@figure=\count85
\c@table=\count86
\abovecaptionskip=\skip41
\belowcaptionskip=\skip42
\bibindent=\dimen102
)
("C:\Program Files\MiKTeX 2.9\tex\generic\babel\babel.sty"
Package: babel 2017/05/19 3.10 The Babel package
("C:\Program Files\MiKTeX 2.9\tex\generic\babel\switch.def"
File: switch.def 2017/05/19 3.10 Babel switching mechanism
! LaTeX Error: Command \setlocale already defined.
Or name \end... illegal, see p.192 of the manual.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
\GenericError ...
\endgroup
l.301 {Find an armchair, sit down and wait}}
?
)
*************************************
* Local config file bblopts.cfg used
*
("C:\Program Files\MiKTeX 2.9\tex\latex\arabi\bblopts.cfg"
File: bblopts.cfg 2005/09/08 v0.1 add Arabic and Farsi to "declared" options of
babel
)
("C:\Program Files\MiKTeX 2.9\tex\latex\babel-spanish\spanish.ldf"
Language: spanish.ldf 2016/03/03 v5.0p Spanish support from the babel system
("C:\Program Files\MiKTeX 2.9\tex\generic\babel\babel.def"
File: babel.def 2017/05/19 3.10 Babel common definitions
\babel@savecnt=\count87
\U@D=\dimen103
)
\es@quottoks=\toks14
\es@quotdepth=\count88
Package babel Info: Making " an active character on input line 561.
Package babel Info: Making . an active character on input line 662.
Package babel Info: Making < an active character on input line 707.
Package babel Info: Making > an active character on input line 707.
)) (test.aux
LaTeX Info: Redefining \. on input line 6.
LaTeX Info: Redefining \% on input line 6.
)
\openout1 = `test.aux'.
LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 6.
LaTeX Font Info: ... okay on input line 6.
LaTeX Info: Redefining \. on input line 6.
LaTeX Info: Redefining \% on input line 6.
[1
{C:/Users/User/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}] (test.aux
LaTeX Info: Redefining \. on input line 6.
LaTeX Info: Redefining \% on input line 6.
)
*File List*
article.cls 2014/09/29 v1.4h Standard LaTeX document class
size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
babel.sty 2017/05/19 3.10 The Babel package
bblopts.cfg 2005/09/08 v0.1 add Arabic and Farsi to "declared" options of b
abel
spanish.ldf
***********
)
Here is how much of TeX's memory you used:
1053 strings out of 493330
13040 string characters out of 3139261
74021 words of memory out of 3000000
4656 multiletter control sequences out of 15000+200000
3640 words of font info for 14 fonts, out of 3000000 for 9000
1141 hyphenation exceptions out of 8191
27i,4n,30p,169b,359s stack positions out of 5000i,500n,10000p,200000b,50000s
<C:/Program Files/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmr10.pfb>
Output written on test.pdf (1 page, 12297 bytes).
PDF statistics:
10 PDF objects out of 1000 (max. 8388607)
0 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)
答案1
3.12版本没有错误babel。
但是，您应该将其更改ukenglish为UKenglish。该ukenglish选项从未存在过，但由于 Windows 中的文件系统不区分大小写，因此UKenglish.ldf在该操作系统下无论如何都会加载正确的文件。