Auto detect lang - peer.paste

plugin-sites/peer.paste/config.json

@@ -1,6 +1,6 @@
 {
   "name": "Peer Paste",
-  "version": "1.3.3",
+  "version": "1.3.4",
   "domain": "peer.paste",
   "enabled": true,
   "description": "Temporary P2P text snippets with expiration and burn-after-read options",

plugin-sites/peer.paste/www/main.js

@@ -131,7 +131,22 @@ function renderPreview() {
     out.innerHTML = sanitizeRenderedHtml(html);
     if (window.hljs) out.querySelectorAll('pre code').forEach((b) => hljs.highlightElement(b));
   } else {
-    out.innerHTML = `<pre><code>${escapeHtml(text)}</code></pre>`;
+    if (window.hljs && text.trim()) {
+      const detected = hljs.highlightAuto(text);
+      const looksLikeCode = /[{}();=<>\[\]]/.test(text) || text.includes('\n');
+      const hasConfidence = typeof detected.relevance === 'number' ? detected.relevance >= 4 : false;
+      if (looksLikeCode && hasConfidence) {
+        const lang = detected.language || 'plaintext';
+        out.innerHTML = `
+          <div class="preview-meta">Detected language: ${escapeHtml(lang)}</div>
+          <pre><code class="hljs language-${escapeHtml(lang)}">${detected.value}</code></pre>
+        `;
+      } else {
+        out.innerHTML = `<pre><code>${escapeHtml(text)}</code></pre>`;
+      }
+    } else {
+      out.innerHTML = `<pre><code>${escapeHtml(text)}</code></pre>`;
+    }
   }
 }
 

plugin-sites/peer.paste/www/styles.css

@@ -181,6 +181,12 @@ button:hover,
   overflow-x: auto;
 }
 
+.preview-meta {
+  color: #9fb0cb;
+  font-size: 0.82rem;
+  margin-bottom: 0.45rem;
+}
+
 #preview-content pre {
   background: #020617;
   padding: 0.8rem;