官方的XML保留字符是什么? [英] What are the official XML reserved characters?

问题描述

在此页面中， Microsoft说XML保留字符(及其实体)为以下字符:

In this page, Microsoft says that XML reserved characters (and their entity) are the following ones:

>    >
<    &lt;
&    &amp;
%    &#37;

但是在

But in this other page, I found that also ' is a reserved character (and its entity is ').

有人可以告诉我一些正式的参考文献吗?其中列出了所有的参考文献，仅列出了XML保留字符?

Can someone indicate me some official reference in which are listed all and only the XML reserved characters?

推荐答案

根据 XML规范，当用作字符内容而不是标记时，必须必须转义的唯一字符是&(如&，&或&)和<(如<)， <或<)，如果它是序列]]>的一部分，则加上>.此外，必须在单引号属性值中转义单引号(通常为')，在双引号属性值中转义双引号(通常为")，以及在使用的字符编码中无法表示的任何字符要序列化文档，必须将其转义为适当的字符参考.

According to the XML spec, the only characters that must be escaped when used as character content rather than markup are & (as &, & or &) and < (as <, < or <), plus > when it is part of the sequence ]]>. In addition, single quotes must be escaped (typically as ') in single quoted attribute values, and double quotes (typically as ") in double-quoted attribute values, and any character that is not representable in the character encoding used to serialize the document must be escaped as a suitable character reference.

您不必必须在单引号属性中转义双引号，反之亦然，但这不会造成任何危害.

You don't have to escape double quotes in single quoted attributes or vice versa, but it won't do any harm if you do so.

当然，您可以 随意转义字符内容中的每个>，"和'(以及其他任何字符)，而无需更改其含义.

Of course, you may escape every >, " and ' (and any other character) within character content if you want to, without changing the meaning.

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