fix: delay backslash tranform time

Author: jiawei686

src/core/hooks/CodeBlock.js

@@ -187,10 +187,6 @@ export default class CodeBlock extends ParagraphBase {
     } else {
       // 默认使用prism渲染代码块
       if (!lang || !Prism.languages[lang]) lang = 'javascript'; // 如果没有写语言，默认用js样式渲染
-      if (Prism.highlight('\\', Prism.languages[lang], lang).indexOf('span') > -1) {
-        // 斜杠\被转化为标签时将\\还原为\
-        cacheCode = cacheCode.replace(/\\\\/g, '\\');
-      }
       cacheCode = Prism.highlight(cacheCode, Prism.languages[lang], lang);
       cacheCode = this.renderLineNumber(cacheCode);
     }
@@ -242,8 +238,8 @@ export default class CodeBlock extends ParagraphBase {
       }
       // $code = this.$replaceSpecialChar($code);
       $code = $code.replace(/~X/g, '\\`');
-      $code = $code.replace(/\\/g, '\\\\');
       cacheCode = this.renderCodeBlock($code, $lang, sign, lines);
+      cacheCode = cacheCode.replace(/\\/g, '\\\\');
       cacheCode = this.$codeCache(sign, cacheCode);
       return this.getCacheWithSpace(this.pushCache(cacheCode, sign, lines), match);
     });