卷曲引号对属性值有效 xml

Question

例如，下面一行是有效的 xml

<?xml version=“1.0” encoding=“UTF-8” ?>

如果有人也能对此提供参考，那将非常有帮助。

Answer 1

简短回答：否。有效的双引号是十六进制 0x22（纯 ascii），而您的示例提供的是十六进制 0x201c。

一个合适的 XML 编辑器应该提供正确的。

Historically, support for curved quotes was a problem in information technology, primarily because the widely used ASCII character set did not include a representation for them.

Curved quotes within and across applications

Answer 2

至于参考，XML规范在https://www.w3.org/TR/REC-xml/，相关规则在

[10]    AttValue       ::=      
           '"' ([^<&"] | Reference)* '"'
        |  "'" ([^<&'] | Reference)* "'"

卷曲引号对属性值有效 xml

Is curled quote valid xml for attribute value

xml

double-quotes

single-quotes