java - 是不是segementfault的bug？ 提问时输入两个反斜线，显示出来会变成一个？

Answer 1

This is not Markdown’s syntax (segmentfault uses the compiler’s syntax by default)

You can use one来转义

输入
UUID.randomUUID().toString().replaceAll("\\-", "")

Result display:
UUID.randomUUID().toString().replaceAll("\-", "")

Answer 2

UUID.randomUUID().toString().replaceAll("\-", "")

The code is surrounded by three [`].

Answer 3

Translation symbols, which are encountered in many languages. For special characters, translate them by adding "".

Answer 4

Possible reasons
1 Because he uses htmlspecialchars_encode($string) when storing it
2 So when he displays it, he uses htmlspecialchars_decode($string);
3 htmlspecialchars_decode will convert \ to

Verification
You can click Edit, and you will find that it displays the content you originally entered, which means there is a display problem. This method is commonly used in PHP and can cause this situation.
Because the content of the multi-text edit box does not use htmlspecialchars_decode, the original text is displayed