Preparation for sharing

- rustfmt
- clippy
- comments
- README

src/pipeline/split_name.rs

@@ -1,14 +1,16 @@
-use crate::interner::Token;
+use crate::interner::Tok;
 
+#[allow(clippy::type_complexity)]
+// FIXME couldn't find a good factoring
 pub fn split_name<'a>(
-  path: &'a [Token<String>],
-  is_valid: &impl Fn(&[Token<String>]) -> bool
-) -> Option<(&'a [Token<String>], &'a [Token<String>])> {
+  path: &'a [Tok<String>],
+  is_valid: &impl Fn(&[Tok<String>]) -> bool,
+) -> Option<(&'a [Tok<String>], &'a [Tok<String>])> {
   for split in (0..=path.len()).rev() {
     let (filename, subpath) = path.split_at(split);
     if is_valid(filename) {
-      return Some((filename, subpath))
+      return Some((filename, subpath));
     }
   }
   None
-}
+}