Make sure the exclude_languages will be an array.

Signed-off-by: corvofeng <[email protected]>

lib/plugins/filter/before_post_render/backtick_code_block.js

@@ -9,6 +9,7 @@ const rLangCaption = /([^\s]+)\s*(.+)?/;
 
 function backtickCodeBlock(data) {
  const config = this.config.highlight || {};
+ const { log } = this;
  if (!config.enable) return;
  data.content = data.content.replace(rBacktick, ($0, start, $2, _args, content, end) => {
  const args = _args.split('=').shift();
@@ -35,6 +36,13 @@ function backtickCodeBlock(data) {
  }
  }
 
+ if (options.exclude_languages && Array.isArray(options.exclude_languages)) {
+ // The exclude_languages is an array
+ } else {
+ log.debug(`The highlight.exclude_languages does not work with: ${options.exclude_languages}`);
+ options.exclude_languages = [];
+ }
+
  if (args) {
  const match = rAllOptions.exec(args) || rLangCaption.exec(args);
 
@@ -50,13 +58,11 @@ function backtickCodeBlock(data) {
  }
  }
 
- if (options.exclude_languages) {
- if (options.exclude_languages.includes(options.lang)) {
- // Only wrap with <pre><code class="lang"></code></pre>
- options.wrap = false;
- options.gutter = false;
- options.autoDetect = false;
- }
+ if (options.exclude_languages.includes(options.lang)) {
+ // Only wrap with <pre><code class="lang"></code></pre>
+ options.wrap = false;
+ options.gutter = false;
+ options.autoDetect = false;
  }
  }
  }