diff --git a/Cargo.lock b/Cargo.lock
index 3779be49a..a16ee153c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -183,6 +183,7 @@ dependencies = [
  "itertools 0.14.0",
  "num-format",
  "phf 0.11.3",
+ "regex",
  "serde",
  "serde_json",
  "unic-langid",
diff --git a/build/ninja_gen/src/archives.rs b/build/ninja_gen/src/archives.rs
index 3f87d3ff5..3d2120b06 100644
--- a/build/ninja_gen/src/archives.rs
+++ b/build/ninja_gen/src/archives.rs
@@ -67,7 +67,7 @@ impl Platform {
 }
 
 /// Append .exe to path if on Windows.
-pub fn with_exe(path: &str) -> Cow<str> {
+pub fn with_exe(path: &str) -> Cow<'_, str> {
     if cfg!(windows) {
         format!("{path}.exe").into()
     } else {
diff --git a/build/ninja_gen/src/node.rs b/build/ninja_gen/src/node.rs
index b7b66225b..38baa8f62 100644
--- a/build/ninja_gen/src/node.rs
+++ b/build/ninja_gen/src/node.rs
@@ -98,7 +98,7 @@ impl BuildAction for YarnInstall<'_> {
     }
 }
 
-fn with_cmd_ext(bin: &str) -> Cow<str> {
+fn with_cmd_ext(bin: &str) -> Cow<'_, str> {
     if cfg!(windows) {
         format!("{bin}.cmd").into()
     } else {
diff --git a/rslib/i18n/Cargo.toml b/rslib/i18n/Cargo.toml
index 899680cc3..cce8bfe6f 100644
--- a/rslib/i18n/Cargo.toml
+++ b/rslib/i18n/Cargo.toml
@@ -22,6 +22,7 @@ inflections.workspace = true
 anki_io.workspace = true
 anyhow.workspace = true
 itertools.workspace = true
+regex.workspace = true
 
 [dependencies]
 fluent.workspace = true
diff --git a/rslib/i18n/src/generated.rs b/rslib/i18n/src/generated.rs
index f3526f79f..f3fa71ce8 100644
--- a/rslib/i18n/src/generated.rs
+++ b/rslib/i18n/src/generated.rs
@@ -4,6 +4,5 @@
 // Include auto-generated content
 
 #![allow(clippy::all)]
-#![allow(text_direction_codepoint_in_literal)]
 
 include!(concat!(env!("OUT_DIR"), "/strings.rs"));
diff --git a/rslib/i18n/write_strings.rs b/rslib/i18n/write_strings.rs
index 36af62eeb..33905d98f 100644
--- a/rslib/i18n/write_strings.rs
+++ b/rslib/i18n/write_strings.rs
@@ -195,12 +195,30 @@ pub(crate) const {lang_name}: phf::Map<&str, &str> = phf::phf_map! {{",
     .unwrap();
 
     for (module, contents) in modules {
-        writeln!(buf, r###"        "{module}" => r##"{contents}"##,"###).unwrap();
+        let escaped_contents = escape_unicode_control_chars(contents);
+        writeln!(
+            buf,
+            r###"        "{module}" => r##"{escaped_contents}"##,"###
+        )
+        .unwrap();
     }
 
     buf.push_str("};\n");
 }
 
+fn escape_unicode_control_chars(input: &str) -> String {
+    use regex::Regex;
+
+    static RE: std::sync::OnceLock<Regex> = std::sync::OnceLock::new();
+    let re = RE.get_or_init(|| Regex::new(r"[\u{202a}-\u{202e}\u{2066}-\u{2069}]").unwrap());
+
+    re.replace_all(input, |caps: &regex::Captures| {
+        let c = caps.get(0).unwrap().as_str().chars().next().unwrap();
+        format!("\\u{{{:04x}}}", c as u32)
+    })
+    .into_owned()
+}
+
 fn lang_constant_name(lang: &str) -> String {
     lang.to_ascii_uppercase().replace('-', "_")
 }
diff --git a/rslib/linkchecker/tests/links.rs b/rslib/linkchecker/tests/links.rs
index 2f39fbe31..39201de78 100644
--- a/rslib/linkchecker/tests/links.rs
+++ b/rslib/linkchecker/tests/links.rs
@@ -42,14 +42,14 @@ enum CheckableUrl {
 }
 
 impl CheckableUrl {
-    fn url(&self) -> Cow<str> {
+    fn url(&self) -> Cow<'_, str> {
         match *self {
             Self::HelpPage(page) => help_page_to_link(page).into(),
             Self::String(s) => s.into(),
         }
     }
 
-    fn anchor(&self) -> Cow<str> {
+    fn anchor(&self) -> Cow<'_, str> {
         match *self {
             Self::HelpPage(page) => help_page_link_suffix(page).into(),
             Self::String(s) => s.split('#').next_back().unwrap_or_default().into(),
diff --git a/rslib/src/backend/collection.rs b/rslib/src/backend/collection.rs
index d9f7c6262..5cef74381 100644
--- a/rslib/src/backend/collection.rs
+++ b/rslib/src/backend/collection.rs
@@ -94,7 +94,7 @@ impl BackendCollectionService for Backend {
 }
 
 impl Backend {
-    pub(super) fn lock_open_collection(&self) -> Result<MutexGuard<Option<Collection>>> {
+    pub(super) fn lock_open_collection(&self) -> Result<MutexGuard<'_, Option<Collection>>> {
         let guard = self.col.lock().unwrap();
         guard
             .is_some()
@@ -102,7 +102,7 @@ impl Backend {
             .ok_or(AnkiError::CollectionNotOpen)
     }
 
-    pub(super) fn lock_closed_collection(&self) -> Result<MutexGuard<Option<Collection>>> {
+    pub(super) fn lock_closed_collection(&self) -> Result<MutexGuard<'_, Option<Collection>>> {
         let guard = self.col.lock().unwrap();
         guard
             .is_none()
diff --git a/rslib/src/card_rendering/mod.rs b/rslib/src/card_rendering/mod.rs
index 3d61a4fe5..262f2a7c9 100644
--- a/rslib/src/card_rendering/mod.rs
+++ b/rslib/src/card_rendering/mod.rs
@@ -34,7 +34,7 @@ pub fn prettify_av_tags<S: Into<String> + AsRef<str>>(txt: S) -> String {
 
 /// Parse `txt` into [CardNodes] and return the result,
 /// or [None] if it only contains text nodes.
-fn nodes_or_text_only(txt: &str) -> Option<CardNodes> {
+fn nodes_or_text_only(txt: &str) -> Option<CardNodes<'_>> {
     let nodes = CardNodes::parse(txt);
     (!nodes.text_only).then_some(nodes)
 }
diff --git a/rslib/src/card_rendering/parser.rs b/rslib/src/card_rendering/parser.rs
index b124c069d..0ee66a9b1 100644
--- a/rslib/src/card_rendering/parser.rs
+++ b/rslib/src/card_rendering/parser.rs
@@ -103,13 +103,13 @@ fn is_not0<'parser, 'arr: 'parser, 's: 'parser>(
     move |s| alt((is_not(arr), success(""))).parse(s)
 }
 
-fn node(s: &str) -> IResult<Node> {
+fn node(s: &str) -> IResult<'_, Node<'_>> {
     alt((sound_node, tag_node, text_node)).parse(s)
 }
 
 /// A sound tag `[sound:resource]`, where `resource` is pointing to a sound or
 /// video file.
-fn sound_node(s: &str) -> IResult<Node> {
+fn sound_node(s: &str) -> IResult<'_, Node<'_>> {
     map(
         delimited(tag("[sound:"), is_not("]"), tag("]")),
         Node::SoundOrVideo,
@@ -117,7 +117,7 @@ fn sound_node(s: &str) -> IResult<Node> {
     .parse(s)
 }
 
-fn take_till_potential_tag_start(s: &str) -> IResult<&str> {
+fn take_till_potential_tag_start(s: &str) -> IResult<'_, &str> {
     // first char could be '[', but wasn't part of a node, so skip (eof ends parse)
     let (after, offset) = anychar(s).map(|(s, c)| (s, c.len_utf8()))?;
     Ok(match after.find('[') {
@@ -127,9 +127,9 @@ fn take_till_potential_tag_start(s: &str) -> IResult<&str> {
 }
 
 /// An Anki tag `[anki:tag...]...[/anki:tag]`.
-fn tag_node(s: &str) -> IResult<Node> {
+fn tag_node(s: &str) -> IResult<'_, Node<'_>> {
     /// Match the start of an opening tag and return its name.
-    fn name(s: &str) -> IResult<&str> {
+    fn name(s: &str) -> IResult<'_, &str> {
         preceded(tag("[anki:"), is_not("] \t\r\n")).parse(s)
     }
 
@@ -139,12 +139,12 @@ fn tag_node(s: &str) -> IResult<Node> {
     ) -> impl FnMut(&'s str) -> IResult<'s, Vec<(&'s str, &'s str)>> + 'name {
         /// List of whitespace-separated `key=val` tuples, where `val` may be
         /// empty.
-        fn options(s: &str) -> IResult<Vec<(&str, &str)>> {
-            fn key(s: &str) -> IResult<&str> {
+        fn options(s: &str) -> IResult<'_, Vec<(&str, &str)>> {
+            fn key(s: &str) -> IResult<'_, &str> {
                 is_not("] \t\r\n=").parse(s)
             }
 
-            fn val(s: &str) -> IResult<&str> {
+            fn val(s: &str) -> IResult<'_, &str> {
                 alt((
                     delimited(tag("\""), is_not0("\""), tag("\"")),
                     is_not0("] \t\r\n\""),
@@ -197,7 +197,7 @@ fn tag_node(s: &str) -> IResult<Node> {
     .parse(s)
 }
 
-fn text_node(s: &str) -> IResult<Node> {
+fn text_node(s: &str) -> IResult<'_, Node<'_>> {
     map(take_till_potential_tag_start, Node::Text).parse(s)
 }
 
diff --git a/rslib/src/cloze.rs b/rslib/src/cloze.rs
index 02919dc12..027c14c0c 100644
--- a/rslib/src/cloze.rs
+++ b/rslib/src/cloze.rs
@@ -54,8 +54,8 @@ enum Token<'a> {
 }
 
 /// Tokenize string
-fn tokenize(mut text: &str) -> impl Iterator<Item = Token> {
-    fn open_cloze(text: &str) -> IResult<&str, Token> {
+fn tokenize(mut text: &str) -> impl Iterator<Item = Token<'_>> {
+    fn open_cloze(text: &str) -> IResult<&str, Token<'_>> {
         // opening brackets and 'c'
         let (text, _opening_brackets_and_c) = tag("{{c")(text)?;
         // following number
@@ -75,12 +75,12 @@ fn tokenize(mut text: &str) -> impl Iterator<Item = Token> {
         Ok((text, Token::OpenCloze(digits)))
     }
 
-    fn close_cloze(text: &str) -> IResult<&str, Token> {
+    fn close_cloze(text: &str) -> IResult<&str, Token<'_>> {
         map(tag("}}"), |_| Token::CloseCloze).parse(text)
     }
 
     /// Match a run of text until an open/close marker is encountered.
-    fn normal_text(text: &str) -> IResult<&str, Token> {
+    fn normal_text(text: &str) -> IResult<&str, Token<'_>> {
         if text.is_empty() {
             return Err(nom::Err::Error(nom::error::make_error(
                 text,
@@ -132,7 +132,7 @@ impl ExtractedCloze<'_> {
         self.hint.unwrap_or("...")
     }
 
-    fn clozed_text(&self) -> Cow<str> {
+    fn clozed_text(&self) -> Cow<'_, str> {
         // happy efficient path?
         if self.nodes.len() == 1 {
             if let TextOrCloze::Text(text) = self.nodes.last().unwrap() {
@@ -353,7 +353,7 @@ pub fn parse_image_occlusions(text: &str) -> Vec<ImageOcclusion> {
         .collect()
 }
 
-pub fn reveal_cloze_text(text: &str, cloze_ord: u16, question: bool) -> Cow<str> {
+pub fn reveal_cloze_text(text: &str, cloze_ord: u16, question: bool) -> Cow<'_, str> {
     let mut buf = String::new();
     let mut active_cloze_found_in_text = false;
     for node in &parse_text_with_clozes(text) {
@@ -376,7 +376,7 @@ pub fn reveal_cloze_text(text: &str, cloze_ord: u16, question: bool) -> Cow<str>
     }
 }
 
-pub fn reveal_cloze_text_only(text: &str, cloze_ord: u16, question: bool) -> Cow<str> {
+pub fn reveal_cloze_text_only(text: &str, cloze_ord: u16, question: bool) -> Cow<'_, str> {
     let mut output = Vec::new();
     for node in &parse_text_with_clozes(text) {
         reveal_cloze_text_in_nodes(node, cloze_ord, question, &mut output);
@@ -384,7 +384,7 @@ pub fn reveal_cloze_text_only(text: &str, cloze_ord: u16, question: bool) -> Cow
     output.join(", ").into()
 }
 
-pub fn extract_cloze_for_typing(text: &str, cloze_ord: u16) -> Cow<str> {
+pub fn extract_cloze_for_typing(text: &str, cloze_ord: u16) -> Cow<'_, str> {
     let mut output = Vec::new();
     for node in &parse_text_with_clozes(text) {
         reveal_cloze_text_in_nodes(node, cloze_ord, false, &mut output);
@@ -460,7 +460,7 @@ pub(crate) fn strip_clozes(text: &str) -> Cow<'_, str> {
     CLOZE.replace_all(text, "$1")
 }
 
-fn strip_html_inside_mathjax(text: &str) -> Cow<str> {
+fn strip_html_inside_mathjax(text: &str) -> Cow<'_, str> {
     MATHJAX.replace_all(text, |caps: &Captures| -> String {
         format!(
             "{}{}{}",
diff --git a/rslib/src/decks/name.rs b/rslib/src/decks/name.rs
index 09fd2fe65..c7e79a782 100644
--- a/rslib/src/decks/name.rs
+++ b/rslib/src/decks/name.rs
@@ -191,7 +191,7 @@ fn invalid_char_for_deck_component(c: char) -> bool {
     c.is_ascii_control()
 }
 
-fn normalized_deck_name_component(comp: &str) -> Cow<str> {
+fn normalized_deck_name_component(comp: &str) -> Cow<'_, str> {
     let mut out = normalize_to_nfc(comp);
     if out.contains(invalid_char_for_deck_component) {
         out = out.replace(invalid_char_for_deck_component, "").into();
diff --git a/rslib/src/import_export/gather.rs b/rslib/src/import_export/gather.rs
index 99e4babe2..7249e134a 100644
--- a/rslib/src/import_export/gather.rs
+++ b/rslib/src/import_export/gather.rs
@@ -231,7 +231,10 @@ fn svg_getter(notetypes: &[Notetype]) -> impl Fn(NotetypeId) -> bool {
 }
 
 impl Collection {
-    fn gather_notes(&mut self, search: impl TryIntoSearch) -> Result<(Vec<Note>, NoteTableGuard)> {
+    fn gather_notes(
+        &mut self,
+        search: impl TryIntoSearch,
+    ) -> Result<(Vec<Note>, NoteTableGuard<'_>)> {
         let guard = self.search_notes_into_table(search)?;
         guard
             .col
@@ -240,7 +243,7 @@ impl Collection {
             .map(|notes| (notes, guard))
     }
 
-    fn gather_cards(&mut self) -> Result<(Vec<Card>, CardTableGuard)> {
+    fn gather_cards(&mut self) -> Result<(Vec<Card>, CardTableGuard<'_>)> {
         let guard = self.search_cards_of_notes_into_table()?;
         guard
             .col
diff --git a/rslib/src/import_export/package/apkg/import/notes.rs b/rslib/src/import_export/package/apkg/import/notes.rs
index ba5178a18..ce4266289 100644
--- a/rslib/src/import_export/package/apkg/import/notes.rs
+++ b/rslib/src/import_export/package/apkg/import/notes.rs
@@ -664,7 +664,7 @@ mod test {
             self
         }
 
-        fn import(self, col: &mut Collection) -> NoteContext {
+        fn import(self, col: &mut Collection) -> NoteContext<'_> {
             let mut progress_handler = col.new_progress_handler();
             let media_map = Box::leak(Box::new(self.media_map));
             let mut ctx = NoteContext::new(
diff --git a/rslib/src/import_export/package/media.rs b/rslib/src/import_export/package/media.rs
index ff5bdf4d7..8a7e5b726 100644
--- a/rslib/src/import_export/package/media.rs
+++ b/rslib/src/import_export/package/media.rs
@@ -154,7 +154,7 @@ pub(super) fn extract_media_entries(
     }
 }
 
-pub(super) fn safe_normalized_file_name(name: &str) -> Result<Cow<str>> {
+pub(super) fn safe_normalized_file_name(name: &str) -> Result<Cow<'_, str>> {
     if !filename_is_safe(name) {
         Err(AnkiError::ImportError {
             source: ImportError::Corrupt,
diff --git a/rslib/src/import_export/text/csv/export.rs b/rslib/src/import_export/text/csv/export.rs
index 885035b7e..1af1cfaa9 100644
--- a/rslib/src/import_export/text/csv/export.rs
+++ b/rslib/src/import_export/text/csv/export.rs
@@ -147,7 +147,7 @@ fn rendered_nodes_to_str(nodes: &[RenderedNode]) -> String {
         .join("")
 }
 
-fn field_to_record_field(field: &str, with_html: bool) -> Cow<str> {
+fn field_to_record_field(field: &str, with_html: bool) -> Cow<'_, str> {
     let mut text = strip_redundant_sections(field);
     if !with_html {
         text = text.map_cow(|t| html_to_text_line(t, false));
@@ -155,7 +155,7 @@ fn field_to_record_field(field: &str, with_html: bool) -> Cow<str> {
     text
 }
 
-fn strip_redundant_sections(text: &str) -> Cow<str> {
+fn strip_redundant_sections(text: &str) -> Cow<'_, str> {
     static RE: LazyLock<Regex> = LazyLock::new(|| {
         Regex::new(
             r"(?isx)
@@ -169,7 +169,7 @@ fn strip_redundant_sections(text: &str) -> Cow<str> {
     RE.replace_all(text.as_ref(), "")
 }
 
-fn strip_answer_side_question(text: &str) -> Cow<str> {
+fn strip_answer_side_question(text: &str) -> Cow<'_, str> {
     static RE: LazyLock<Regex> =
         LazyLock::new(|| Regex::new(r"(?is)^.*<hr id=answer>\n*").unwrap());
     RE.replace_all(text.as_ref(), "")
@@ -251,7 +251,7 @@ impl NoteContext {
             .chain(self.tags(note))
     }
 
-    fn notetype_name(&self, note: &Note) -> Option<Cow<[u8]>> {
+    fn notetype_name(&self, note: &Note) -> Option<Cow<'_, [u8]>> {
         self.with_notetype.then(|| {
             self.notetypes
                 .get(&note.notetype_id)
@@ -259,7 +259,7 @@ impl NoteContext {
         })
     }
 
-    fn deck_name(&self, note: &Note) -> Option<Cow<[u8]>> {
+    fn deck_name(&self, note: &Note) -> Option<Cow<'_, [u8]>> {
         self.with_deck.then(|| {
             self.deck_ids
                 .get(&note.id)
@@ -268,7 +268,7 @@ impl NoteContext {
         })
     }
 
-    fn tags(&self, note: &Note) -> Option<Cow<[u8]>> {
+    fn tags(&self, note: &Note) -> Option<Cow<'_, [u8]>> {
         self.with_tags
             .then(|| Cow::from(note.tags.join(" ").into_bytes()))
     }
diff --git a/rslib/src/import_export/text/import.rs b/rslib/src/import_export/text/import.rs
index 202189eb6..1e6f85b3f 100644
--- a/rslib/src/import_export/text/import.rs
+++ b/rslib/src/import_export/text/import.rs
@@ -511,7 +511,7 @@ impl NoteContext<'_> {
 }
 
 impl Note {
-    fn first_field_stripped(&self) -> Cow<str> {
+    fn first_field_stripped(&self) -> Cow<'_, str> {
         strip_html_preserving_media_filenames(&self.fields()[0])
     }
 }
@@ -623,7 +623,7 @@ impl ForeignNote {
                 .all(|(opt, field)| opt.as_ref().map(|s| s == field).unwrap_or(true))
     }
 
-    fn first_field_stripped(&self) -> Option<Cow<str>> {
+    fn first_field_stripped(&self) -> Option<Cow<'_, str>> {
         self.fields
             .first()
             .and_then(|s| s.as_ref())
diff --git a/rslib/src/latex.rs b/rslib/src/latex.rs
index e5cb002ac..02056b721 100644
--- a/rslib/src/latex.rs
+++ b/rslib/src/latex.rs
@@ -48,7 +48,7 @@ pub struct ExtractedLatex {
 pub(crate) fn extract_latex_expanding_clozes(
     text: &str,
     svg: bool,
-) -> (Cow<str>, Vec<ExtractedLatex>) {
+) -> (Cow<'_, str>, Vec<ExtractedLatex>) {
     if text.contains("{{c") {
         let expanded = expand_clozes_to_reveal_latex(text);
         let (text, extracts) = extract_latex(&expanded, svg);
@@ -60,7 +60,7 @@ pub(crate) fn extract_latex_expanding_clozes(
 
 /// Extract LaTeX from the provided text.
 /// Expects cloze deletions to already be expanded.
-pub fn extract_latex(text: &str, svg: bool) -> (Cow<str>, Vec<ExtractedLatex>) {
+pub fn extract_latex(text: &str, svg: bool) -> (Cow<'_, str>, Vec<ExtractedLatex>) {
     let mut extracted = vec![];
 
     let new_text = LATEX.replace_all(text, |caps: &Captures| {
@@ -84,7 +84,7 @@ pub fn extract_latex(text: &str, svg: bool) -> (Cow<str>, Vec<ExtractedLatex>) {
     (new_text, extracted)
 }
 
-fn strip_html_for_latex(html: &str) -> Cow<str> {
+fn strip_html_for_latex(html: &str) -> Cow<'_, str> {
     let mut out: Cow<str> = html.into();
     if let Cow::Owned(o) = LATEX_NEWLINES.replace_all(html, "\n") {
         out = o.into();
diff --git a/rslib/src/media/files.rs b/rslib/src/media/files.rs
index 6974e2f81..ce17b40bb 100644
--- a/rslib/src/media/files.rs
+++ b/rslib/src/media/files.rs
@@ -91,7 +91,7 @@ fn nonbreaking_space(char: char) -> bool {
 /// - Any problem characters are removed.
 /// - Windows device names like CON and PRN have '_' appended
 /// - The filename is limited to 120 bytes.
-pub(crate) fn normalize_filename(fname: &str) -> Cow<str> {
+pub(crate) fn normalize_filename(fname: &str) -> Cow<'_, str> {
     let mut output = Cow::Borrowed(fname);
 
     if !is_nfc(output.as_ref()) {
@@ -102,7 +102,7 @@ pub(crate) fn normalize_filename(fname: &str) -> Cow<str> {
 }
 
 /// See normalize_filename(). This function expects NFC-normalized input.
-pub(crate) fn normalize_nfc_filename(mut fname: Cow<str>) -> Cow<str> {
+pub(crate) fn normalize_nfc_filename(mut fname: Cow<'_, str>) -> Cow<'_, str> {
     if fname.contains(disallowed_char) {
         fname = fname.replace(disallowed_char, "").into()
     }
@@ -137,7 +137,7 @@ pub(crate) fn normalize_nfc_filename(mut fname: Cow<str>) -> Cow<str> {
 /// but can be accessed as NFC. On these devices, if the filename
 /// is otherwise valid, the filename is returned as NFC.
 #[allow(clippy::collapsible_else_if)]
-pub(crate) fn filename_if_normalized(fname: &str) -> Option<Cow<str>> {
+pub(crate) fn filename_if_normalized(fname: &str) -> Option<Cow<'_, str>> {
     if cfg!(target_vendor = "apple") {
         if !is_nfc(fname) {
             let as_nfc = fname.chars().nfc().collect::<String>();
@@ -208,7 +208,7 @@ pub(crate) fn add_hash_suffix_to_file_stem(fname: &str, hash: &Sha1Hash) -> Stri
 }
 
 /// If filename is longer than max_bytes, truncate it.
-fn truncate_filename(fname: &str, max_bytes: usize) -> Cow<str> {
+fn truncate_filename(fname: &str, max_bytes: usize) -> Cow<'_, str> {
     if fname.len() <= max_bytes {
         return Cow::Borrowed(fname);
     }
diff --git a/rslib/src/notetype/render.rs b/rslib/src/notetype/render.rs
index 08c5677b0..19f5208dc 100644
--- a/rslib/src/notetype/render.rs
+++ b/rslib/src/notetype/render.rs
@@ -25,7 +25,7 @@ pub struct RenderCardOutput {
 
 impl RenderCardOutput {
     /// The question text. This is only valid to call when partial_render=false.
-    pub fn question(&self) -> Cow<str> {
+    pub fn question(&self) -> Cow<'_, str> {
         match self.qnodes.as_slice() {
             [RenderedNode::Text { text }] => text.into(),
             _ => "not fully rendered".into(),
@@ -33,7 +33,7 @@ impl RenderCardOutput {
     }
 
     /// The answer text. This is only valid to call when partial_render=false.
-    pub fn answer(&self) -> Cow<str> {
+    pub fn answer(&self) -> Cow<'_, str> {
         match self.anodes.as_slice() {
             [RenderedNode::Text { text }] => text.into(),
             _ => "not fully rendered".into(),
diff --git a/rslib/src/scheduler/states/load_balancer.rs b/rslib/src/scheduler/states/load_balancer.rs
index 20b6936df..8cb9e6a1c 100644
--- a/rslib/src/scheduler/states/load_balancer.rs
+++ b/rslib/src/scheduler/states/load_balancer.rs
@@ -174,7 +174,7 @@ impl LoadBalancer {
         &self,
         note_id: Option<NoteId>,
         deckconfig_id: DeckConfigId,
-    ) -> LoadBalancerContext {
+    ) -> LoadBalancerContext<'_> {
         LoadBalancerContext {
             load_balancer: self,
             note_id,
diff --git a/rslib/src/search/mod.rs b/rslib/src/search/mod.rs
index d42ea8323..0960fabf9 100644
--- a/rslib/src/search/mod.rs
+++ b/rslib/src/search/mod.rs
@@ -226,7 +226,7 @@ impl Collection {
         &mut self,
         search: impl TryIntoSearch,
         mode: SortMode,
-    ) -> Result<CardTableGuard> {
+    ) -> Result<CardTableGuard<'_>> {
         let top_node = search.try_into_search()?;
         let writer = SqlWriter::new(self, ReturnItemType::Cards);
         let want_order = mode != SortMode::NoOrder;
@@ -299,7 +299,7 @@ impl Collection {
     pub(crate) fn search_notes_into_table(
         &mut self,
         search: impl TryIntoSearch,
-    ) -> Result<NoteTableGuard> {
+    ) -> Result<NoteTableGuard<'_>> {
         let top_node = search.try_into_search()?;
         let writer = SqlWriter::new(self, ReturnItemType::Notes);
         let mode = SortMode::NoOrder;
@@ -320,7 +320,7 @@ impl Collection {
 
     /// Place the ids of cards with notes in 'search_nids' into 'search_cids'.
     /// Returns number of added cards.
-    pub(crate) fn search_cards_of_notes_into_table(&mut self) -> Result<CardTableGuard> {
+    pub(crate) fn search_cards_of_notes_into_table(&mut self) -> Result<CardTableGuard<'_>> {
         self.storage.setup_searched_cards_table()?;
         let cards = self.storage.search_cards_of_notes_into_table()?;
         Ok(CardTableGuard { cards, col: self })
diff --git a/rslib/src/search/parser.rs b/rslib/src/search/parser.rs
index ae166ef54..33c1a4622 100644
--- a/rslib/src/search/parser.rs
+++ b/rslib/src/search/parser.rs
@@ -158,7 +158,7 @@ pub fn parse(input: &str) -> Result<Vec<Node>> {
 
 /// Zero or more nodes inside brackets, eg 'one OR two -three'.
 /// Empty vec must be handled by caller.
-fn group_inner(input: &str) -> IResult<Vec<Node>> {
+fn group_inner(input: &str) -> IResult<'_, Vec<Node>> {
     let mut remaining = input;
     let mut nodes = vec![];
 
@@ -203,16 +203,16 @@ fn group_inner(input: &str) -> IResult<Vec<Node>> {
     Ok((remaining, nodes))
 }
 
-fn whitespace0(s: &str) -> IResult<Vec<char>> {
+fn whitespace0(s: &str) -> IResult<'_, Vec<char>> {
     many0(one_of(" \u{3000}")).parse(s)
 }
 
 /// Optional leading space, then a (negated) group or text
-fn node(s: &str) -> IResult<Node> {
+fn node(s: &str) -> IResult<'_, Node> {
     preceded(whitespace0, alt((negated_node, group, text))).parse(s)
 }
 
-fn negated_node(s: &str) -> IResult<Node> {
+fn negated_node(s: &str) -> IResult<'_, Node> {
     map(preceded(char('-'), alt((group, text))), |node| {
         Node::Not(Box::new(node))
     })
@@ -220,7 +220,7 @@ fn negated_node(s: &str) -> IResult<Node> {
 }
 
 /// One or more nodes surrounded by brackets, eg (one OR two)
-fn group(s: &str) -> IResult<Node> {
+fn group(s: &str) -> IResult<'_, Node> {
     let (opened, _) = char('(')(s)?;
     let (tail, inner) = group_inner(opened)?;
     if let Some(remaining) = tail.strip_prefix(')') {
@@ -235,18 +235,18 @@ fn group(s: &str) -> IResult<Node> {
 }
 
 /// Either quoted or unquoted text
-fn text(s: &str) -> IResult<Node> {
+fn text(s: &str) -> IResult<'_, Node> {
     alt((quoted_term, partially_quoted_term, unquoted_term)).parse(s)
 }
 
 /// Quoted text, including the outer double quotes.
-fn quoted_term(s: &str) -> IResult<Node> {
+fn quoted_term(s: &str) -> IResult<'_, Node> {
     let (remaining, term) = quoted_term_str(s)?;
     Ok((remaining, Node::Search(search_node_for_text(term)?)))
 }
 
 /// eg deck:"foo bar" - quotes must come after the :
-fn partially_quoted_term(s: &str) -> IResult<Node> {
+fn partially_quoted_term(s: &str) -> IResult<'_, Node> {
     let (remaining, (key, val)) = separated_pair(
         escaped(is_not("\"(): \u{3000}\\"), '\\', none_of(" \u{3000}")),
         char(':'),
@@ -260,7 +260,7 @@ fn partially_quoted_term(s: &str) -> IResult<Node> {
 }
 
 /// Unquoted text, terminated by whitespace or unescaped ", ( or )
-fn unquoted_term(s: &str) -> IResult<Node> {
+fn unquoted_term(s: &str) -> IResult<'_, Node> {
     match escaped(is_not("\"() \u{3000}\\"), '\\', none_of(" \u{3000}"))(s) {
         Ok((tail, term)) => {
             if term.is_empty() {
@@ -297,7 +297,7 @@ fn unquoted_term(s: &str) -> IResult<Node> {
 }
 
 /// Non-empty string delimited by unescaped double quotes.
-fn quoted_term_str(s: &str) -> IResult<&str> {
+fn quoted_term_str(s: &str) -> IResult<'_, &str> {
     let (opened, _) = char('"')(s)?;
     if let Ok((tail, inner)) =
         escaped::<_, ParseError, _, _>(is_not(r#""\"#), '\\', anychar).parse(opened)
@@ -321,7 +321,7 @@ fn quoted_term_str(s: &str) -> IResult<&str> {
 
 /// Determine if text is a qualified search, and handle escaped chars.
 /// Expect well-formed input: unempty and no trailing \.
-fn search_node_for_text(s: &str) -> ParseResult<SearchNode> {
+fn search_node_for_text(s: &str) -> ParseResult<'_, SearchNode> {
     // leading : is only possible error for well-formed input
     let (tail, head) = verify(escaped(is_not(r":\"), '\\', anychar), |t: &str| {
         !t.is_empty()
@@ -369,7 +369,7 @@ fn search_node_for_text_with_argument<'a>(
     })
 }
 
-fn parse_tag(s: &str) -> ParseResult<SearchNode> {
+fn parse_tag(s: &str) -> ParseResult<'_, SearchNode> {
     Ok(if let Some(re) = s.strip_prefix("re:") {
         SearchNode::Tag {
             tag: unescape_quotes(re),
@@ -383,7 +383,7 @@ fn parse_tag(s: &str) -> ParseResult<SearchNode> {
     })
 }
 
-fn parse_template(s: &str) -> ParseResult<SearchNode> {
+fn parse_template(s: &str) -> ParseResult<'_, SearchNode> {
     Ok(SearchNode::CardTemplate(match s.parse::<u16>() {
         Ok(n) => TemplateKind::Ordinal(n.max(1) - 1),
         Err(_) => TemplateKind::Name(unescape(s)?),
@@ -391,7 +391,7 @@ fn parse_template(s: &str) -> ParseResult<SearchNode> {
 }
 
 /// flag:0-7
-fn parse_flag(s: &str) -> ParseResult<SearchNode> {
+fn parse_flag(s: &str) -> ParseResult<'_, SearchNode> {
     if let Ok(flag) = s.parse::<u8>() {
         if flag > 7 {
             Err(parse_failure(s, FailKind::InvalidFlag))
@@ -404,7 +404,7 @@ fn parse_flag(s: &str) -> ParseResult<SearchNode> {
 }
 
 /// eg resched:3
-fn parse_resched(s: &str) -> ParseResult<SearchNode> {
+fn parse_resched(s: &str) -> ParseResult<'_, SearchNode> {
     parse_u32(s, "resched:").map(|days| SearchNode::Rated {
         days,
         ease: RatingKind::ManualReschedule,
@@ -412,7 +412,7 @@ fn parse_resched(s: &str) -> ParseResult<SearchNode> {
 }
 
 /// eg prop:ivl>3, prop:ease!=2.5
-fn parse_prop(prop_clause: &str) -> ParseResult<SearchNode> {
+fn parse_prop(prop_clause: &str) -> ParseResult<'_, SearchNode> {
     let (tail, prop) = alt((
         tag("ivl"),
         tag("due"),
@@ -580,23 +580,23 @@ fn parse_prop_rated<'a>(num: &str, context: &'a str) -> ParseResult<'a, Property
 }
 
 /// eg added:1
-fn parse_added(s: &str) -> ParseResult<SearchNode> {
+fn parse_added(s: &str) -> ParseResult<'_, SearchNode> {
     parse_u32(s, "added:").map(|n| SearchNode::AddedInDays(n.max(1)))
 }
 
 /// eg edited:1
-fn parse_edited(s: &str) -> ParseResult<SearchNode> {
+fn parse_edited(s: &str) -> ParseResult<'_, SearchNode> {
     parse_u32(s, "edited:").map(|n| SearchNode::EditedInDays(n.max(1)))
 }
 
 /// eg introduced:1
-fn parse_introduced(s: &str) -> ParseResult<SearchNode> {
+fn parse_introduced(s: &str) -> ParseResult<'_, SearchNode> {
     parse_u32(s, "introduced:").map(|n| SearchNode::IntroducedInDays(n.max(1)))
 }
 
 /// eg rated:3 or rated:10:2
 /// second arg must be between 1-4
-fn parse_rated(s: &str) -> ParseResult<SearchNode> {
+fn parse_rated(s: &str) -> ParseResult<'_, SearchNode> {
     let mut it = s.splitn(2, ':');
     let days = parse_u32(it.next().unwrap(), "rated:")?.max(1);
     let button = parse_answer_button(it.next(), s)?;
@@ -604,7 +604,7 @@ fn parse_rated(s: &str) -> ParseResult<SearchNode> {
 }
 
 /// eg is:due
-fn parse_state(s: &str) -> ParseResult<SearchNode> {
+fn parse_state(s: &str) -> ParseResult<'_, SearchNode> {
     use StateKind::*;
     Ok(SearchNode::State(match s {
         "new" => New,
@@ -624,7 +624,7 @@ fn parse_state(s: &str) -> ParseResult<SearchNode> {
     }))
 }
 
-fn parse_mid(s: &str) -> ParseResult<SearchNode> {
+fn parse_mid(s: &str) -> ParseResult<'_, SearchNode> {
     parse_i64(s, "mid:").map(|n| SearchNode::NotetypeId(n.into()))
 }
 
@@ -646,7 +646,7 @@ fn check_id_list<'a>(s: &'a str, context: &str) -> ParseResult<'a, &'a str> {
 }
 
 /// eg dupe:1231,hello
-fn parse_dupe(s: &str) -> ParseResult<SearchNode> {
+fn parse_dupe(s: &str) -> ParseResult<'_, SearchNode> {
     let mut it = s.splitn(2, ',');
     let ntid = parse_i64(it.next().unwrap(), s)?;
     if let Some(text) = it.next() {
@@ -700,7 +700,7 @@ fn unescape_quotes_and_backslashes(s: &str) -> String {
 }
 
 /// Unescape chars with special meaning to the parser.
-fn unescape(txt: &str) -> ParseResult<String> {
+fn unescape(txt: &str) -> ParseResult<'_, String> {
     if let Some(seq) = invalid_escape_sequence(txt) {
         Err(parse_failure(
             txt,
diff --git a/rslib/src/tags/register.rs b/rslib/src/tags/register.rs
index 9605ea92a..d02fa260a 100644
--- a/rslib/src/tags/register.rs
+++ b/rslib/src/tags/register.rs
@@ -155,7 +155,7 @@ fn invalid_char_for_tag(c: char) -> bool {
     c.is_ascii_control() || is_tag_separator(c)
 }
 
-fn normalized_tag_name_component(comp: &str) -> Cow<str> {
+fn normalized_tag_name_component(comp: &str) -> Cow<'_, str> {
     let mut out = normalize_to_nfc(comp);
     if out.contains(invalid_char_for_tag) {
         out = out.replace(invalid_char_for_tag, "").into();
@@ -170,7 +170,7 @@ fn normalized_tag_name_component(comp: &str) -> Cow<str> {
     }
 }
 
-pub(super) fn normalize_tag_name(name: &str) -> Result<Cow<str>> {
+pub(super) fn normalize_tag_name(name: &str) -> Result<Cow<'_, str>> {
     let normalized_name: Cow<str> = if name
         .split("::")
         .any(|comp| matches!(normalized_tag_name_component(comp), Cow::Owned(_)))
diff --git a/rslib/src/template.rs b/rslib/src/template.rs
index 4895cc162..aa84e0e7f 100644
--- a/rslib/src/template.rs
+++ b/rslib/src/template.rs
@@ -121,7 +121,7 @@ pub enum Token<'a> {
     CloseConditional(&'a str),
 }
 
-fn comment_token(s: &str) -> nom::IResult<&str, Token> {
+fn comment_token(s: &str) -> nom::IResult<&str, Token<'_>> {
     map(
         delimited(
             tag(COMMENT_START),
@@ -151,7 +151,7 @@ fn tokens(mut template: &str) -> impl Iterator<Item = TemplateResult<Token<'_>>>
 }
 
 /// classify handle based on leading character
-fn classify_handle(s: &str) -> Token {
+fn classify_handle(s: &str) -> Token<'_> {
     let start = s.trim_start_matches('{').trim();
     if start.len() < 2 {
         return Token::Replacement(start);
diff --git a/rslib/src/template_filters.rs b/rslib/src/template_filters.rs
index 4949e756d..66e9ecb37 100644
--- a/rslib/src/template_filters.rs
+++ b/rslib/src/template_filters.rs
@@ -117,7 +117,7 @@ fn captured_sound(caps: &Captures) -> bool {
     caps.get(2).unwrap().as_str().starts_with("sound:")
 }
 
-fn kana_filter(text: &str) -> Cow<str> {
+fn kana_filter(text: &str) -> Cow<'_, str> {
     FURIGANA
         .replace_all(&text.replace("&nbsp;", " "), |caps: &Captures| {
             if captured_sound(caps) {
@@ -130,7 +130,7 @@ fn kana_filter(text: &str) -> Cow<str> {
         .into()
 }
 
-fn kanji_filter(text: &str) -> Cow<str> {
+fn kanji_filter(text: &str) -> Cow<'_, str> {
     FURIGANA
         .replace_all(&text.replace("&nbsp;", " "), |caps: &Captures| {
             if captured_sound(caps) {
@@ -143,7 +143,7 @@ fn kanji_filter(text: &str) -> Cow<str> {
         .into()
 }
 
-fn furigana_filter(text: &str) -> Cow<str> {
+fn furigana_filter(text: &str) -> Cow<'_, str> {
     FURIGANA
         .replace_all(&text.replace("&nbsp;", " "), |caps: &Captures| {
             if captured_sound(caps) {
diff --git a/rslib/src/text.rs b/rslib/src/text.rs
index 590c05b39..037366c28 100644
--- a/rslib/src/text.rs
+++ b/rslib/src/text.rs
@@ -215,8 +215,8 @@ pub fn is_html(text: impl AsRef<str>) -> bool {
     HTML.is_match(text.as_ref())
 }
 
-pub fn html_to_text_line(html: &str, preserve_media_filenames: bool) -> Cow<str> {
-    let (html_stripper, sound_rep): (fn(&str) -> Cow<str>, _) = if preserve_media_filenames {
+pub fn html_to_text_line(html: &str, preserve_media_filenames: bool) -> Cow<'_, str> {
+    let (html_stripper, sound_rep): (fn(&str) -> Cow<'_, str>, _) = if preserve_media_filenames {
         (strip_html_preserving_media_filenames, "$1")
     } else {
         (strip_html, "")
@@ -229,15 +229,15 @@ pub fn html_to_text_line(html: &str, preserve_media_filenames: bool) -> Cow<str>
         .trim()
 }
 
-pub fn strip_html(html: &str) -> Cow<str> {
+pub fn strip_html(html: &str) -> Cow<'_, str> {
     strip_html_preserving_entities(html).map_cow(decode_entities)
 }
 
-pub fn strip_html_preserving_entities(html: &str) -> Cow<str> {
+pub fn strip_html_preserving_entities(html: &str) -> Cow<'_, str> {
     HTML.replace_all(html, "")
 }
 
-pub fn decode_entities(html: &str) -> Cow<str> {
+pub fn decode_entities(html: &str) -> Cow<'_, str> {
     if html.contains('&') {
         match htmlescape::decode_html(html) {
             Ok(text) => text.replace('\u{a0}', " ").into(),
@@ -249,7 +249,7 @@ pub fn decode_entities(html: &str) -> Cow<str> {
     }
 }
 
-pub(crate) fn newlines_to_spaces(text: &str) -> Cow<str> {
+pub(crate) fn newlines_to_spaces(text: &str) -> Cow<'_, str> {
     if text.contains('\n') {
         text.replace('\n', " ").into()
     } else {
@@ -257,7 +257,7 @@ pub(crate) fn newlines_to_spaces(text: &str) -> Cow<str> {
     }
 }
 
-pub fn strip_html_for_tts(html: &str) -> Cow<str> {
+pub fn strip_html_for_tts(html: &str) -> Cow<'_, str> {
     HTML_LINEBREAK_TAGS
         .replace_all(html, " ")
         .map_cow(strip_html)
@@ -282,7 +282,7 @@ pub(crate) struct MediaRef<'a> {
     pub fname_decoded: Cow<'a, str>,
 }
 
-pub(crate) fn extract_media_refs(text: &str) -> Vec<MediaRef> {
+pub(crate) fn extract_media_refs(text: &str) -> Vec<MediaRef<'_>> {
     let mut out = vec![];
 
     for caps in HTML_MEDIA_TAGS.captures_iter(text) {
@@ -359,11 +359,11 @@ pub(crate) fn extract_underscored_references(text: &str) -> Vec<&str> {
 /// Returns the first matching group as a str. This is intended for regexes
 /// where exactly one group matches, and will panic for matches without matching
 /// groups.
-fn extract_match(caps: Captures) -> &str {
+fn extract_match(caps: Captures<'_>) -> &str {
     caps.iter().skip(1).find_map(|g| g).unwrap().as_str()
 }
 
-pub fn strip_html_preserving_media_filenames(html: &str) -> Cow<str> {
+pub fn strip_html_preserving_media_filenames(html: &str) -> Cow<'_, str> {
     HTML_MEDIA_TAGS
         .replace_all(html, r" ${1}${2}${3} ")
         .map_cow(strip_html)
@@ -385,7 +385,7 @@ pub(crate) fn sanitize_html_no_images(html: &str) -> String {
         .to_string()
 }
 
-pub(crate) fn normalize_to_nfc(s: &str) -> Cow<str> {
+pub(crate) fn normalize_to_nfc(s: &str) -> Cow<'_, str> {
     match is_nfc(s) {
         false => s.chars().nfc().collect::<String>().into(),
         true => s.into(),
@@ -429,7 +429,7 @@ static EXTRA_NO_COMBINING_REPLACEMENTS: phf::Map<char, &str> = phf::phf_map! {
 };
 
 /// Convert provided string to NFKD form and strip combining characters.
-pub(crate) fn without_combining(s: &str) -> Cow<str> {
+pub(crate) fn without_combining(s: &str) -> Cow<'_, str> {
     // if the string is already normalized
     if matches!(is_nfkd_quick(s.chars()), IsNormalized::Yes) {
         // and no combining characters found, return unchanged
@@ -472,7 +472,7 @@ pub(crate) fn is_glob(txt: &str) -> bool {
 }
 
 /// Convert to a RegEx respecting Anki wildcards.
-pub(crate) fn to_re(txt: &str) -> Cow<str> {
+pub(crate) fn to_re(txt: &str) -> Cow<'_, str> {
     to_custom_re(txt, ".")
 }
 
@@ -492,7 +492,7 @@ pub(crate) fn to_custom_re<'a>(txt: &'a str, wildcard: &str) -> Cow<'a, str> {
 }
 
 /// Convert to SQL respecting Anki wildcards.
-pub(crate) fn to_sql(txt: &str) -> Cow<str> {
+pub(crate) fn to_sql(txt: &str) -> Cow<'_, str> {
     // escape sequences and unescaped special characters which need conversion
     static RE: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"\\[\\*]|[*%]").unwrap());
     RE.replace_all(txt, |caps: &Captures| {
@@ -508,7 +508,7 @@ pub(crate) fn to_sql(txt: &str) -> Cow<str> {
 }
 
 /// Unescape everything.
-pub(crate) fn to_text(txt: &str) -> Cow<str> {
+pub(crate) fn to_text(txt: &str) -> Cow<'_, str> {
     static RE: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"\\(.)").unwrap());
     RE.replace_all(txt, "$1")
 }
@@ -561,14 +561,14 @@ const FRAGMENT_QUERY_UNION: &AsciiSet = &CONTROLS
     .add(b'#');
 
 /// IRI-encode unescaped local paths in HTML fragment.
-pub(crate) fn encode_iri_paths(unescaped_html: &str) -> Cow<str> {
+pub(crate) fn encode_iri_paths(unescaped_html: &str) -> Cow<'_, str> {
     transform_html_paths(unescaped_html, |fname| {
         utf8_percent_encode(fname, FRAGMENT_QUERY_UNION).into()
     })
 }
 
 /// URI-decode escaped local paths in HTML fragment.
-pub(crate) fn decode_iri_paths(escaped_html: &str) -> Cow<str> {
+pub(crate) fn decode_iri_paths(escaped_html: &str) -> Cow<'_, str> {
     transform_html_paths(escaped_html, |fname| {
         percent_decode_str(fname).decode_utf8_lossy()
     })
@@ -577,9 +577,9 @@ pub(crate) fn decode_iri_paths(escaped_html: &str) -> Cow<str> {
 /// Apply a transform to local filename references in tags like IMG.
 /// Required at display time, as Anki unfortunately stores the references
 /// in unencoded form in the database.
-fn transform_html_paths<F>(html: &str, transform: F) -> Cow<str>
+fn transform_html_paths<F>(html: &str, transform: F) -> Cow<'_, str>
 where
-    F: Fn(&str) -> Cow<str>,
+    F: Fn(&str) -> Cow<'_, str>,
 {
     HTML_MEDIA_TAGS.replace_all(html, |caps: &Captures| {
         let fname = caps
diff --git a/rslib/src/typeanswer.rs b/rslib/src/typeanswer.rs
index 1432ad50d..08c638e12 100644
--- a/rslib/src/typeanswer.rs
+++ b/rslib/src/typeanswer.rs
@@ -49,7 +49,7 @@ pub fn compare_answer(expected: &str, typed: &str, combining: bool) -> String {
 trait DiffTrait {
     fn get_typed(&self) -> &[char];
     fn get_expected(&self) -> &[char];
-    fn get_expected_original(&self) -> Cow<str>;
+    fn get_expected_original(&self) -> Cow<'_, str>;
 
     fn new(expected: &str, typed: &str) -> Self;
 
@@ -136,7 +136,7 @@ fn render_tokens(tokens: &[DiffToken]) -> String {
 
 /// Prefixes a leading mark character with a non-breaking space to prevent
 /// it from joining the previous token.
-fn isolate_leading_mark(text: &str) -> Cow<str> {
+fn isolate_leading_mark(text: &str) -> Cow<'_, str> {
     if text
         .chars()
         .next()
@@ -161,7 +161,7 @@ impl DiffTrait for Diff {
     fn get_expected(&self) -> &[char] {
         &self.expected
     }
-    fn get_expected_original(&self) -> Cow<str> {
+    fn get_expected_original(&self) -> Cow<'_, str> {
         Cow::Owned(self.get_expected().iter().collect::<String>())
     }
 
@@ -191,7 +191,7 @@ impl DiffTrait for DiffNonCombining {
     fn get_expected(&self) -> &[char] {
         &self.base.expected
     }
-    fn get_expected_original(&self) -> Cow<str> {
+    fn get_expected_original(&self) -> Cow<'_, str> {
         Cow::Borrowed(&self.expected_original)
     }