Auto merge of #39204 - ollie27:linkchecker_fragment, r=alexcrichton

linkchecker: Fix checking links which are just fragments

Also fix a typo which linkchecker should have caught.

It was broken by 31a8638e5e.

r? @alexcrichton

src/doc/reference.md

@@ -650,15 +650,15 @@ Rust syntax is restricted in two ways:
 
 [RFC 550]: https://github.com/rust-lang/rfcs/blob/master/text/0550-macro-future-proofing.md
 
-## Procedrual Macros
+## Procedural Macros
 
-"Procedrual macros" are the second way to implement a macro. For now, the only
+"Procedural macros" are the second way to implement a macro. For now, the only
 thing they can be used for is to implement derive on your own types. See
 [the book][procedural macros] for a tutorial.
 
 Procedural macros involve a few different parts of the language and its
 standard libraries. First is the `proc_macro` crate, included with Rust,
-that defines an interface for building a procedrual macro. The 
+that defines an interface for building a procedural macro. The
 `#[proc_macro_derive(Foo)]` attribute is used to mark the the deriving
 function. This function must have the type signature:
 

src/tools/linkchecker/main.rs

@@ -151,9 +151,6 @@ fn check(cache: &mut Cache,
         }
         let mut parts = url.splitn(2, "#");
         let url = parts.next().unwrap();
-        if url.is_empty() {
-            return
-        }
         let fragment = parts.next();
         let mut parts = url.splitn(2, "?");
         let url = parts.next().unwrap();
@@ -161,6 +158,7 @@ fn check(cache: &mut Cache,
         // Once we've plucked out the URL, parse it using our base url and
         // then try to extract a file path.
         let mut path = file.to_path_buf();
+        if !url.is_empty() {
             path.pop();
             for part in Path::new(url).components() {
                 match part {
@@ -171,6 +169,7 @@ fn check(cache: &mut Cache,
                     Component::Normal(s) => { path.push(s); }
                 }
             }
+        }
 
         // Alright, if we've found a file name then this file had better
         // exist! If it doesn't then we register and print an error.