Ignore rename of non md files

components/rebuild/src/lib.rs

@@ -262,6 +262,13 @@ pub fn after_content_rename(site: &mut Site, old: &Path, new: &Path) -> Result<(
         return site.build();
     }
 
+    // We ignore renames on non-markdown files for now
+    if let Some(ext) = new_path.extension() {
+        if ext != "md" {
+            return Ok(());
+        }
+    }
+
     // Renaming a file to _index.md, let the section editing do something and hope for the best
     if new_path.file_name().unwrap() == "_index.md" {
         // We aren't entirely sure where the original thing was so just try to delete whatever was

components/rebuild/tests/rebuild.rs

@@ -223,3 +223,14 @@ fn can_rebuild_after_renaming_section_folder() {
 
     assert!(file_contains!(site_path, "public/new-posts/simple/index.html", "simple"));
 }
+
+#[test]
+fn can_rebuild_after_renaming_non_md_asset_in_colocated_folder() {
+    let tmp_dir = tempdir().expect("create temp dir");
+    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (old_path, new_path) = rename!(site_path, "content/posts/with-assets/zola.png", "gutenberg.png");
+
+    // Testing that we don't try to load some images as markdown or something
+    let res = after_content_rename(&mut site, &old_path, &new_path);
+    assert!(res.is_ok());
+}

test_site/content/posts/with-assets/index.md

@@ -4,4 +4,4 @@ description = "hey there"
 date = 2015-03-01
 +++
 
-Hello world
+Hello world [here](with.js)