maint: use the matches! macro when possible

src/uu/csplit/src/csplit.rs

@@ -124,12 +124,7 @@ where
     // split the file based on patterns
     for pattern in patterns.into_iter() {
         let pattern_as_str = pattern.to_string();
-        #[allow(clippy::match_like_matches_macro)]
-        let is_skip = if let patterns::Pattern::SkipToMatch(_, _, _) = pattern {
-            true
-        } else {
-            false
-        };
+        let is_skip = matches!(pattern, patterns::Pattern::SkipToMatch(_, _, _));
         match pattern {
             patterns::Pattern::UpToLine(n, ex) => {
                 let mut up_to_line = n;

src/uu/expr/src/tokens.rs

@@ -63,12 +63,7 @@ impl Token {
         }
     }
     fn is_a_close_paren(&self) -> bool {
-        #[allow(clippy::match_like_matches_macro)]
-        // `matches!(...)` macro not stabilized until rust v1.42
-        match *self {
-            Token::ParClose => true,
-            _ => false,
-        }
+        matches!(*self, Token::ParClose)
     }
 }
 

src/uu/fmt/src/parasplit.rs

@@ -264,12 +264,9 @@ impl<'a> ParagraphStream<'a> {
                     return false;
                 }
 
-                #[allow(clippy::match_like_matches_macro)]
-                // `matches!(...)` macro not stabilized until rust v1.42
-                l_slice[..colon_posn].chars().all(|x| match x as usize {
-                    y if !(33..=126).contains(&y) => false,
-                    _ => true,
-                })
+                l_slice[..colon_posn]
+                    .chars()
+                    .all(|x| !matches!(x as usize, y if !(33..=126).contains(&y)))
             }
         }
     }
@@ -541,12 +538,7 @@ impl<'a> WordSplit<'a> {
     }
 
     fn is_punctuation(c: char) -> bool {
-        #[allow(clippy::match_like_matches_macro)]
-        // `matches!(...)` macro not stabilized until rust v1.42
-        match c {
-            '!' | '.' | '?' => true,
-            _ => false,
-        }
+        matches!(c, '!' | '.' | '?')
     }
 }
 

src/uu/hashsum/src/hashsum.rs

@@ -51,14 +51,23 @@ struct Options {
 }
 
 fn is_custom_binary(program: &str) -> bool {
-    #[allow(clippy::match_like_matches_macro)]
-    // `matches!(...)` macro not stabilized until rust v1.42
-    match program {
-        "md5sum" | "sha1sum" | "sha224sum" | "sha256sum" | "sha384sum" | "sha512sum"
-        | "sha3sum" | "sha3-224sum" | "sha3-256sum" | "sha3-384sum" | "sha3-512sum"
-        | "shake128sum" | "shake256sum" | "b2sum" => true,
-        _ => false,
-    }
+    matches!(
+        program,
+        "md5sum"
+            | "sha1sum"
+            | "sha224sum"
+            | "sha256sum"
+            | "sha384sum"
+            | "sha512sum"
+            | "sha3sum"
+            | "sha3-224sum"
+            | "sha3-256sum"
+            | "sha3-384sum"
+            | "sha3-512sum"
+            | "shake128sum"
+            | "shake256sum"
+            | "b2sum"
+    )
 }
 
 #[allow(clippy::cognitive_complexity)]

src/uu/od/src/parse_formats.rs

@@ -85,12 +85,7 @@ fn od_format_type(type_char: FormatType, byte_size: u8) -> Option<FormatterItemI
 }
 
 fn od_argument_with_option(ch: char) -> bool {
-    #[allow(clippy::match_like_matches_macro)]
-    // `matches!(...)` macro not stabilized until rust v1.42
-    match ch {
-        'A' | 'j' | 'N' | 'S' | 'w' => true,
-        _ => false,
-    }
+    matches!(ch, 'A' | 'j' | 'N' | 'S' | 'w')
 }
 
 /// Parses format flags from command line

src/uu/rm/src/rm.rs

@@ -386,13 +386,8 @@ fn prompt(msg: &str) -> bool {
     let stdin = stdin();
     let mut stdin = stdin.lock();
 
-    #[allow(clippy::match_like_matches_macro)]
-    // `matches!(...)` macro not stabilized until rust v1.42
     match stdin.read_until(b'\n', &mut buf) {
-        Ok(x) if x > 0 => match buf[0] {
-            b'y' | b'Y' => true,
-            _ => false,
-        },
+        Ok(x) if x > 0 => matches!(buf[0], b'y' | b'Y'),
         _ => false,
     }
 }

src/uu/sort/src/numeric_str_cmp.rs

@@ -68,10 +68,10 @@ impl NumInfo {
             }
             first_char = false;
 
-            if parse_settings
-                .thousands_separator
-                .map_or(false, |c| c == char)
-            {
+            if matches!(
+                parse_settings.thousands_separator,
+                Some(c) if c == char,
+            ) {
                 continue;
             }
 

src/uu/sort/src/sort.rs

@@ -583,11 +583,10 @@ impl FieldSelector {
             is_default_selection: from.field == 1
                 && from.char == 1
                 && to.is_none()
-                // TODO: Once our MinRustV is 1.42 or higher, change this to the matches! macro
-                && match settings.mode {
-                    SortMode::Numeric | SortMode::GeneralNumeric | SortMode::HumanNumeric => false,
-                    _ => true,
-                },
+                && !matches!(
+                    settings.mode,
+                    SortMode::Numeric | SortMode::GeneralNumeric | SortMode::HumanNumeric,
+                ),
             needs_tokens: from.field != 1 || from.char == 0 || to.is_some(),
             from,
             to,
@@ -650,7 +649,7 @@ impl FieldSelector {
             tokens: Option<&[Field]>,
             position: &KeyPosition,
         ) -> Resolution {
-            if tokens.map_or(false, |fields| fields.len() < position.field) {
+            if matches!(tokens, Some(tokens) if tokens.len() < position.field) {
                 Resolution::TooHigh
             } else if position.char == 0 {
                 let end = tokens.unwrap()[position.field - 1].end;

src/uu/test/src/parser.rs

@@ -121,13 +121,7 @@ impl Parser {
     /// Test if the next token in the stream is a BOOLOP (-a or -o), without
     /// removing the token from the stream.
     fn peek_is_boolop(&mut self) -> bool {
-        // TODO: change to `matches!(self.peek(), Symbol::BoolOp(_))` once MSRV is 1.42
-        // #[allow(clippy::match_like_matches_macro)] // needs MSRV 1.43
-        if let Symbol::BoolOp(_) = self.peek() {
-            true
-        } else {
-            false
-        }
+        matches!(self.peek(), Symbol::BoolOp(_))
     }
 
     /// Parse an expression.