restrict clippy::string_slice

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/config/proxy.rs

@@ -127,6 +127,7 @@ impl WildCardedDomain {
 impl std::str::FromStr for WildCardedDomain {
 	type Err = std::convert::Infallible;
 
+	#[allow(clippy::string_slice)]
 	fn from_str(s: &str) -> Result<Self, Self::Err> {
 		// maybe do some domain validation?
 		Ok(if s.starts_with("*.") {

src/core/utils/html.rs

@@ -6,6 +6,7 @@ pub struct Escape<'a>(pub &'a str);
 
 /// Copied from librustdoc:
 /// * <https://github.com/rust-lang/rust/blob/cbaeec14f90b59a91a6b0f17fc046c66fa811892/src/librustdoc/html/escape.rs>
+#[allow(clippy::string_slice)]
 impl fmt::Display for Escape<'_> {
 	fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
 		// Because the internet is always right, turns out there's not that many

src/core/utils/string.rs

@@ -9,12 +9,13 @@ pub const EMPTY: &str = "";
 /// common_prefix(&input) == "con";
 /// ```
 #[must_use]
+#[allow(clippy::string_slice)]
 pub fn common_prefix<'a>(choice: &'a [&str]) -> &'a str {
 	choice.first().map_or(EMPTY, move |best| {
 		choice.iter().skip(1).fold(*best, |best, choice| {
 			&best[0..choice
-				.chars()
-				.zip(best.chars())
+				.char_indices()
+				.zip(best.char_indices())
 				.take_while(|&(a, b)| a == b)
 				.count()]
 		})