Enjoy rust 1.94

src/markdown/parser.rs

@@ -1,4 +1,4 @@
-use std::iter::{self, once};
+use std::iter;
 
 use crate::markdown::Style;
 
@@ -142,18 +142,8 @@ fn collect_until<'a, const N: usize>(
     first_token: Option<&Token<'a>>,
     tokens: &mut &[Token<'a>],
     pattern: impl FnMut(&[Token<'a>; N]) -> bool,
-) -> Span<'a>
-where
-    // &[T; N]: TryFrom<&[T]>
-    for<'b> &'b [Token<'a>; N]: TryFrom<&'b [Token<'a>]>,
-{
-    let mut windows = tokens.windows(N).map(|slice| {
-        <&[Token<'a>; N]>::try_from(slice)
-            .ok()
-            .expect("`windows` promises to return slices of length N")
-    });
-
-    let split_at = match windows.position(pattern) {
+) -> Span<'a> {
+    let split_at = match tokens.array_windows::<N>().position(pattern) {
         Some(i) => i + N,
         None => tokens.len(), // consume everything
     };
@@ -161,8 +151,8 @@ where
     let (consume, keep) = tokens.split_at(split_at);
     *tokens = keep;
 
-    once(first_token)
-        .flatten()
+    first_token
+        .into_iter()
         .chain(consume)
         .fold(Span::empty(), |span: Span<'_>, token| {
             span.try_merge(&token.span).unwrap()