resolve_case_instenstive returns a result<option> now

src/utils.rs

@@ -34,7 +34,7 @@ pub fn path_to_lowercase(path: impl AsRef<Path>) -> PathBuf {
 pub fn resolve_case_insensitive(
     base: impl AsRef<Path>,
     rel: impl AsRef<Path>,
-) -> io::Result<PathBuf> {
+) -> io::Result<Option<PathBuf>> {
     let mut current = base.as_ref().to_path_buf();
 
     for part in rel.as_ref().iter() {
@@ -56,13 +56,10 @@ pub fn resolve_case_insensitive(
         match found {
             Some(path) => current = path,
             None => {
-                return Err(io::Error::new(
-                    io::ErrorKind::NotFound,
-                    format!("Path component not found: {}", target),
-                ));
+                return Ok(None);
             }
         }
     }
 
-    Ok(current)
+    Ok(Some(current))
 }