Inconsistent highlightjs syntax highlighting

[fastfoodcoding]

I am using marked with highlightjs for syntax highlighting. Both are latest versions. the following markdown is generating inconsistent highlighted code.

```java
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;

class FilesHandling {
	public static void main(String[] args) {
		try {
			List<String> lines = Files.readAllLines(Paths.get("/path/to/file.txt"));
			int lineNum = 1;
		} catch (IOException e) {
		}
	}
}
```

```java
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

class FilesHandling {
	public static void main(String[] args) {
		try {
		} catch (IOException e) {
		}
	}
}
```

This is generating following html code

<pre><code class="lang-java"><span class="hljs-keyword">import</span> java.io.IOException;
<span class="hljs-keyword">import</span> java.nio.file.Files;
<span class="hljs-keyword">import</span> java.nio.file.Paths;
<span class="hljs-keyword">import</span> java.util.<span class="hljs-built_in">List</span>;

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">FilesHandling</span> </span>{
    public <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> main(<span class="hljs-built_in">String</span>[] args) {
        <span class="hljs-keyword">try</span> {
            <span class="hljs-built_in">List</span>&lt;<span class="hljs-built_in">String</span>&gt; lines = Files.readAllLines(Paths.<span class="hljs-keyword">get</span>(<span class="hljs-string">"/path/to/file.txt"</span>));
            <span class="hljs-built_in">int</span> lineNum = <span class="hljs-number">1</span>;
        } <span class="hljs-keyword">catch</span> (IOException e) {
        }
    }
}
</code></pre>
<pre><code class="lang-java"><span class="hljs-meta"><span class="hljs-meta-keyword">import</span> java.io.IOException;</span>
<span class="hljs-meta"><span class="hljs-meta-keyword">import</span> java.nio.file.Files;</span>
<span class="hljs-meta"><span class="hljs-meta-keyword">import</span> java.nio.file.Paths;</span>

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">FilesHandling</span> </span>{
    <span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> main(String[] args) {
        <span class="hljs-keyword">try</span> {
        } <span class="hljs-keyword">catch</span> (IOException e) {
        }
    }
}
</code></pre>

You can see it live here https://fastfoodcoding.com/tutorials/1504364531942/file-handling-in-java
See the difference between first code snippet and the rest.

Following is my configuration in code

marked = require('marked');
// Synchronous highlighting with highlight.js
marked.setOptions({
  breaks: true,
  highlight: function(code) {
    return require('highlight.js').highlightAuto(code).value;
  }
});

[joshbruce]

#983

[Feder1co5oave]

It's because you're using highlightAuto, so highlight.js is guessing the language inside the code block.