转义字符

The character which when preceded by an escape character represents bell character.

前跟转义字符用于表示响铃字符的字符。

The expression contained an invalid escaped character, or a trailing escape.

表达式中含有无效的转义字符或尾随转义。

Any special character preceded by an escape shall match itself.

任何特殊字符前跟转义字符都匹配自己。

The character which when preceded by an escape character represents the word boundary assertion.

前跟转义字符用于判断单词边界的字符。

The character which when preceded by an escape character represents any non - space character.

前跟转义字符用于表示任意 非 空白字符的字符。