Merge pull request #1125 from Tyrubias/upgrade-and-cleanup

Upgrade both Rust version and edition (and fix some lints)

.github/workflows/unit-tests.yml

@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        rust: [1.56.1, stable, beta, nightly]
+        rust: [1.63.0, stable, beta, nightly]
 
     steps:
       - name: Checkout repository

Cargo.toml

@@ -3,8 +3,8 @@ name = "exa"
 description = "A modern replacement for ls"
 authors = ["Benjamin Sago <ogham@bsago.me>"]
 categories = ["command-line-utilities"]
-edition = "2018"
-rust-version = "1.56.1"
+edition = "2021"
+rust-version = "1.63.0"
 exclude = ["/devtools/*", "/Justfile", "/Vagrantfile", "/screenshots.png"]
 readme = "README.md"
 homepage = "https://the.exa.website/"

README.md

@@ -196,8 +196,8 @@ To build without Git support, run `cargo install --no-default-features exa` is a
 <a id="development">
 <h1>Development
 
-<a href="https://blog.rust-lang.org/2021/11/01/Rust-1.56.1.html">
-    <img src="https://img.shields.io/badge/rustc-1.56.1+-lightgray.svg" alt="Rust 1.56.1+" />
+<a href="https://blog.rust-lang.org/2022/08/11/Rust-1.63.0.html">
+    <img src="https://img.shields.io/badge/rustc-1.63.0+-lightgray.svg" alt="Rust 1.63.0+" />
 </a>
 
 <a href="https://github.com/ogham/exa/blob/master/LICENCE">

build.rs

@@ -41,7 +41,7 @@ fn main() -> io::Result<()> {
     let path = &out.join("version_string.txt");
 
     // Bland version text
-    let mut f = File::create(path).expect(&path.to_string_lossy());
+    let mut f = File::create(path).unwrap_or_else(|_| { panic!("{}", path.to_string_lossy().to_string()) });
     writeln!(f, "{}", strip_codes(&ver))?;
 
     Ok(())

rust-toolchain.toml

@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.56.1"
+channel = "1.63.0"

src/fs/dir.rs

@@ -176,7 +176,7 @@ impl<'dir, 'ig> Iterator for Files<'dir, 'ig> {
 /// Usually files in Unix use a leading dot to be hidden or visible, but two
 /// entries in particular are “extra-hidden”: `.` and `..`, which only become
 /// visible after an extra `-a` option.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum DotFilter {
 
     /// Shows files, dotfiles, and `.` and `..`.

src/fs/dir_action.rs

@@ -19,7 +19,7 @@
 /// into them and print out their contents. The recurse mode does this by
 /// having extra output blocks at the end, while the tree mode will show
 /// directories inline, with their contents immediately underneath.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum DirAction {
 
     /// This directory should be listed along with the regular files, instead
@@ -58,7 +58,7 @@ impl DirAction {
 
 
 /// The options that determine how to recurse into a directory.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct RecurseOptions {
 
     /// Whether recursion should be done as a tree or as multiple individual

src/fs/feature/xattr.rs

@@ -167,7 +167,7 @@ mod lister {
             unsafe {
                 listxattr(
                     c_path.as_ptr(),
-                    buf.as_mut_ptr() as *mut c_char,
+                    buf.as_mut_ptr().cast::<c_char>(),
                     bufsize as size_t,
                     self.c_flags,
                 )
@@ -178,7 +178,7 @@ mod lister {
             unsafe {
                 getxattr(
                     c_path.as_ptr(),
-                    buf.as_ptr() as *const c_char,
+                    buf.as_ptr().cast::<c_char>(),
                     ptr::null_mut(),
                     0,
                     0,

src/fs/fields.rs

@@ -210,7 +210,7 @@ pub struct Time {
 /// A file’s status in a Git repository. Whether a file is in a repository or
 /// not is handled by the Git module, rather than having a “null” variant in
 /// this enum.
-#[derive(PartialEq, Copy, Clone)]
+#[derive(PartialEq, Eq, Copy, Clone)]
 pub enum GitStatus {
 
     /// This file hasn’t changed since the last commit.

src/fs/file.rs

@@ -221,13 +221,13 @@ impl<'dir> File<'dir> {
             path.to_path_buf()
         }
         else if let Some(dir) = self.parent_dir {
-            dir.join(&*path)
+            dir.join(path)
         }
         else if let Some(parent) = self.path.parent() {
-            parent.join(&*path)
+            parent.join(path)
         }
         else {
-            self.path.join(&*path)
+            self.path.join(path)
         }
     }
 
@@ -375,7 +375,7 @@ impl<'dir> File<'dir> {
                 nanosec -= 1_000_000_000;
             }
 
-            let duration = Duration::new(sec.abs() as u64, nanosec.abs() as u32);
+            let duration = Duration::new(sec.unsigned_abs(), nanosec.unsigned_abs() as u32);
             Some(UNIX_EPOCH - duration)
         }
         else {

src/fs/filter.rs

@@ -23,7 +23,7 @@ use crate::fs::File;
 /// The filter also governs sorting the list. After being filtered, pairs of
 /// files are compared and sorted based on the result, with the sort field
 /// performing the comparison.
-#[derive(PartialEq, Debug, Clone)]
+#[derive(PartialEq, Eq, Debug, Clone)]
 pub struct FileFilter {
 
     /// Whether directories should be listed first, and other types of file
@@ -89,7 +89,7 @@ impl FileFilter {
     }
 
     /// Sort the files in the given vector based on the sort field option.
-    pub fn sort_files<'a, F>(&self, files: &mut Vec<F>)
+    pub fn sort_files<'a, F>(&self, files: &mut [F])
     where F: AsRef<File<'a>>
     {
         files.sort_by(|a, b| {
@@ -113,7 +113,7 @@ impl FileFilter {
 
 
 /// User-supplied field to sort by.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum SortField {
 
     /// Don’t apply any sorting. This is usually used as an optimisation in
@@ -194,7 +194,7 @@ pub enum SortField {
 /// lowercase letters because it takes the difference between the two cases
 /// into account? I gave up and just named these two variants after the
 /// effects they have.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum SortCase {
 
     /// Sort files case-sensitively with uppercase first, with ‘A’ coming
@@ -271,7 +271,7 @@ impl SortField {
 /// The **ignore patterns** are a list of globs that are tested against
 /// each filename, and if any of them match, that file isn’t displayed.
 /// This lets a user hide, say, text files by ignoring `*.txt`.
-#[derive(PartialEq, Default, Debug, Clone)]
+#[derive(PartialEq, Eq, Default, Debug, Clone)]
 pub struct IgnorePatterns {
     patterns: Vec<glob::Pattern>,
 }
@@ -327,7 +327,7 @@ impl IgnorePatterns {
 
 
 /// Whether to ignore or display files that Git would ignore.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum GitIgnore {
 
     /// Ignore files that Git would ignore.
@@ -346,31 +346,31 @@ mod test_ignores {
     #[test]
     fn empty_matches_nothing() {
         let pats = IgnorePatterns::empty();
-        assert_eq!(false, pats.is_ignored("nothing"));
-        assert_eq!(false, pats.is_ignored("test.mp3"));
+        assert!(!pats.is_ignored("nothing"));
+        assert!(!pats.is_ignored("test.mp3"));
     }
 
     #[test]
     fn ignores_a_glob() {
         let (pats, fails) = IgnorePatterns::parse_from_iter(vec![ "*.mp3" ]);
         assert!(fails.is_empty());
-        assert_eq!(false, pats.is_ignored("nothing"));
-        assert_eq!(true,  pats.is_ignored("test.mp3"));
+        assert!(!pats.is_ignored("nothing"));
+        assert!(pats.is_ignored("test.mp3"));
     }
 
     #[test]
     fn ignores_an_exact_filename() {
         let (pats, fails) = IgnorePatterns::parse_from_iter(vec![ "nothing" ]);
         assert!(fails.is_empty());
-        assert_eq!(true,  pats.is_ignored("nothing"));
-        assert_eq!(false, pats.is_ignored("test.mp3"));
+        assert!(pats.is_ignored("nothing"));
+        assert!(!pats.is_ignored("test.mp3"));
     }
 
     #[test]
     fn ignores_both() {
         let (pats, fails) = IgnorePatterns::parse_from_iter(vec![ "nothing", "*.mp3" ]);
         assert!(fails.is_empty());
-        assert_eq!(true, pats.is_ignored("nothing"));
-        assert_eq!(true, pats.is_ignored("test.mp3"));
+        assert!(pats.is_ignored("nothing"));
+        assert!(pats.is_ignored("test.mp3"));
     }
 }

src/info/filetype.rs

@@ -11,7 +11,7 @@ use crate::output::icons::FileIcon;
 use crate::theme::FileColours;
 
 
-#[derive(Debug, Default, PartialEq)]
+#[derive(Debug, Default, PartialEq, Eq)]
 pub struct FileExtensions;
 
 impl FileExtensions {

src/main.rs

@@ -62,7 +62,7 @@ fn main() {
     }
 
     let args: Vec<_> = env::args_os().skip(1).collect();
-    match Options::parse(args.iter().map(|e| e.as_ref()), &LiveVars) {
+    match Options::parse(args.iter().map(std::convert::AsRef::as_ref), &LiveVars) {
         OptionsResult::Ok(options, mut input_paths) => {
 
             // List the current directory by default.

src/options/error.rs

@@ -7,7 +7,7 @@ use crate::options::parser::{Arg, Flag, ParseError};
 
 
 /// Something wrong with the combination of options the user has picked.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum OptionsError {
 
     /// There was an error (from `getopts`) parsing the arguments.
@@ -44,7 +44,7 @@ pub enum OptionsError {
 }
 
 /// The source of a string that failed to be parsed as a number.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum NumberSource {
 
     /// It came... from a command-line argument!
@@ -119,7 +119,7 @@ impl OptionsError {
 
 
 /// A list of legal choices for an argument-taking option.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Choices(pub &'static [&'static str]);
 
 impl fmt::Display for Choices {

src/options/filter.rs

@@ -295,7 +295,6 @@ mod test {
     mod ignore_patterns {
         use super::*;
         use std::iter::FromIterator;
-        use glob;
 
         fn pat(string: &'static str) -> glob::Pattern {
             glob::Pattern::new(string).unwrap()

src/options/help.rs

@@ -69,7 +69,7 @@ static EXTENDED_HELP:   &str = "  -@, --extended       list each file's extended
 /// All the information needed to display the help text, which depends
 /// on which features are enabled and whether the user only wants to
 /// see one section’s help.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct HelpString;
 
 impl HelpString {

src/options/mod.rs

@@ -216,7 +216,7 @@ pub mod test {
     use crate::options::parser::{Arg, MatchedFlags};
     use std::ffi::OsStr;
 
-    #[derive(PartialEq, Debug)]
+    #[derive(PartialEq, Eq, Debug)]
     pub enum Strictnesses {
         Last,
         Complain,
@@ -228,14 +228,14 @@ pub mod test {
     /// both, then both should resolve to the same result.
     ///
     /// It returns a vector with one or two elements in.
-    /// These elements can then be tested with assert_eq or what have you.
+    /// These elements can then be tested with `assert_eq` or what have you.
     pub fn parse_for_test<T, F>(inputs: &[&str], args: &'static [&'static Arg], strictnesses: Strictnesses, get: F) -> Vec<T>
     where F: Fn(&MatchedFlags<'_>) -> T
     {
         use self::Strictnesses::*;
         use crate::options::parser::{Args, Strictness};
 
-        let bits = inputs.into_iter().map(OsStr::new).collect::<Vec<_>>();
+        let bits = inputs.iter().map(OsStr::new).collect::<Vec<_>>();
         let mut result = Vec::new();
 
         if strictnesses == Last || strictnesses == Both {

src/options/parser.rs

@@ -52,7 +52,7 @@ pub type Values = &'static [&'static str];
 
 /// A **flag** is either of the two argument types, because they have to
 /// be in the same array together.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum Flag {
     Short(ShortArg),
     Long(LongArg),
@@ -77,7 +77,7 @@ impl fmt::Display for Flag {
 }
 
 /// Whether redundant arguments should be considered a problem.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum Strictness {
 
     /// Throw an error when an argument doesn’t do anything, either because
@@ -91,7 +91,7 @@ pub enum Strictness {
 
 /// Whether a flag takes a value. This is applicable to both long and short
 /// arguments.
-#[derive(Copy, Clone, PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum TakesValue {
 
     /// This flag has to be followed by a value.
@@ -108,7 +108,7 @@ pub enum TakesValue {
 
 
 /// An **argument** can be matched by one of the user’s input strings.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct Arg {
 
     /// The short argument that matches it, if any.
@@ -136,7 +136,7 @@ impl fmt::Display for Arg {
 
 
 /// Literally just several args.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Args(pub &'static [&'static Arg]);
 
 impl Args {
@@ -340,7 +340,7 @@ impl Args {
 
 
 /// The **matches** are the result of parsing the user’s command-line strings.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Matches<'args> {
 
     /// The flags that were parsed from the user’s input.
@@ -351,7 +351,7 @@ pub struct Matches<'args> {
     pub frees: Vec<&'args OsStr>,
 }
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct MatchedFlags<'args> {
 
     /// The individual flags from the user’s input, in the order they were
@@ -462,7 +462,7 @@ impl<'a> MatchedFlags<'a> {
 
 /// A problem with the user’s input that meant it couldn’t be parsed into a
 /// coherent list of arguments.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum ParseError {
 
     /// A flag that has to take a value was not given one.
@@ -743,6 +743,6 @@ mod matches_test {
     fn no_count() {
         let flags = MatchedFlags { flags: Vec::new(), strictness: Strictness::UseLastArguments };
 
-        assert_eq!(flags.has(&COUNT).unwrap(), false);
+        assert!(!flags.has(&COUNT).unwrap());
     }
 }

src/options/theme.rs

@@ -130,18 +130,18 @@ mod terminal_test {
 
     impl MockVars {
         fn empty() -> MockVars {
-            return MockVars {
+            MockVars {
                 ls: "",
                 exa: "",
                 no_color: "",
-            };
+            }
         }
         fn with_no_color() -> MockVars {
-            return MockVars {
+            MockVars {
                 ls: "",
                 exa: "",
                 no_color: "true",
-            };
+            }
         }
     }
 

src/options/version.rs

@@ -8,7 +8,7 @@ use crate::options::flags;
 use crate::options::parser::MatchedFlags;
 
 
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct VersionString;
 // There were options here once, but there aren’t anymore!
 

src/options/view.rs

@@ -378,7 +378,7 @@ mod test {
 
         ($name:ident: $type:ident <- $inputs:expr; $stricts:expr => err $result:expr) => {
             /// Special macro for testing Err results.
-            /// This is needed because sometimes the Ok type doesn’t implement PartialEq.
+            /// This is needed because sometimes the Ok type doesn’t implement `PartialEq`.
             #[test]
             fn $name() {
                 for result in parse_for_test($inputs.as_ref(), TEST_ARGS, $stricts, |mf| $type::deduce(mf)) {
@@ -389,7 +389,7 @@ mod test {
 
         ($name:ident: $type:ident <- $inputs:expr; $stricts:expr => like $pat:pat) => {
             /// More general macro for testing against a pattern.
-            /// Instead of using PartialEq, this just tests if it matches a pat.
+            /// Instead of using `PartialEq`, this just tests if it matches a pat.
             #[test]
             fn $name() {
                 for result in parse_for_test($inputs.as_ref(), TEST_ARGS, $stricts, |mf| $type::deduce(mf)) {

src/output/cell.rs

@@ -77,11 +77,9 @@ impl TextCell {
     ///
     /// This method allocates a `String` to hold the spaces.
     pub fn add_spaces(&mut self, count: usize) {
-        use std::iter::repeat;
-
         (*self.width) += count;
 
-        let spaces: String = repeat(' ').take(count).collect();
+        let spaces: String = " ".repeat(count);
         self.contents.0.push(Style::default().paint(spaces));
     }
 
@@ -193,7 +191,7 @@ impl TextCellContents {
 ///
 /// It has `From` impls that convert an input string or fixed with to values
 /// of this type, and will `Deref` to the contained `usize` value.
-#[derive(PartialEq, Debug, Clone, Copy, Default)]
+#[derive(PartialEq, Eq, Debug, Clone, Copy, Default)]
 pub struct DisplayWidth(usize);
 
 impl<'a> From<&'a str> for DisplayWidth {

src/output/details.rs

@@ -91,7 +91,7 @@ use crate::theme::Theme;
 ///
 /// Almost all the heavy lifting is done in a Table object, which handles the
 /// columns for each row.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Options {
 
     /// Options specific to drawing a table.
@@ -161,7 +161,7 @@ impl<'a> Render<'a> {
                 (None,    _)        => {/* Keep Git how it is */},
             }
 
-            let mut table = Table::new(table, self.git, &self.theme);
+            let mut table = Table::new(table, self.git, self.theme);
 
             if self.opts.header {
                 let header = table.header_row();

src/output/file_name.rs

@@ -54,7 +54,7 @@ enum LinkStyle {
 
 
 /// Whether to append file class characters to the file names.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum Classify {
 
     /// Just display the file names, without any characters.
@@ -73,7 +73,7 @@ impl Default for Classify {
 
 
 /// Whether and how to show icons.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum ShowIcons {
 
     /// Don’t show icons at all.

src/output/grid.rs

@@ -8,7 +8,7 @@ use crate::output::file_name::Options as FileStyle;
 use crate::theme::Theme;
 
 
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct Options {
     pub across: bool,
 }

src/output/grid_details.rs

@@ -18,7 +18,7 @@ use crate::output::tree::{TreeParams, TreeDepth};
 use crate::theme::Theme;
 
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Options {
     pub grid: GridOptions,
     pub details: DetailsOptions,
@@ -39,7 +39,7 @@ impl Options {
 /// small directory of four files in four columns, the files just look spaced
 /// out and it’s harder to see what’s going on. So it can be enabled just for
 /// larger directory listings.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum RowThreshold {
 
     /// Only use grid-details view if it would result in at least this many
@@ -202,7 +202,7 @@ impl<'a> Render<'a> {
             (None,    _)        => {/* Keep Git how it is */},
         }
 
-        let mut table = Table::new(options, self.git, &self.theme);
+        let mut table = Table::new(options, self.git, self.theme);
         let mut rows = Vec::new();
 
         if self.details.header {

src/output/mod.rs

@@ -26,7 +26,7 @@ pub struct View {
 
 
 /// The **mode** is the “type” of output.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 #[allow(clippy::large_enum_variant)]
 pub enum Mode {
     Grid(grid::Options),
@@ -37,7 +37,7 @@ pub enum Mode {
 
 
 /// The width of the terminal requested by the user.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum TerminalWidth {
 
     /// The user requested this specific number of columns.

src/output/render/blocks.rs

@@ -43,7 +43,7 @@ pub mod test {
         let blox = f::Blocks::None;
         let expected = TextCell::blank(Green.italic());
 
-        assert_eq!(expected, blox.render(&TestColours).into());
+        assert_eq!(expected, blox.render(&TestColours));
     }
 
 
@@ -52,6 +52,6 @@ pub mod test {
         let blox = f::Blocks::Some(3005);
         let expected = TextCell::paint_str(Red.blink(), "3005");
 
-        assert_eq!(expected, blox.render(&TestColours).into());
+        assert_eq!(expected, blox.render(&TestColours));
     }
 }

src/output/render/git.rs

@@ -85,7 +85,7 @@ pub mod test {
             ].into(),
         };
 
-        assert_eq!(expected, stati.render(&TestColours).into())
+        assert_eq!(expected, stati.render(&TestColours))
     }
 
 
@@ -104,6 +104,6 @@ pub mod test {
             ].into(),
         };
 
-        assert_eq!(expected, stati.render(&TestColours).into())
+        assert_eq!(expected, stati.render(&TestColours))
     }
 }

src/output/render/inode.rs

@@ -21,8 +21,8 @@ pub mod test {
 
     #[test]
     fn blocklessness() {
-        let io = f::Inode(1414213);
+        let io = f::Inode(1_414_213);
         let expected = TextCell::paint_str(Cyan.underline(), "1414213");
-        assert_eq!(expected, io.render(Cyan.underline()).into());
+        assert_eq!(expected, io.render(Cyan.underline()));
     }
 }

src/output/render/links.rs

@@ -52,7 +52,7 @@ pub mod test {
             contents: vec![ Blue.paint("1") ].into(),
         };
 
-        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()).into());
+        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()));
     }
 
     #[test]
@@ -67,7 +67,7 @@ pub mod test {
             contents: vec![ Blue.paint("3,005") ].into(),
         };
 
-        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()).into());
+        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()));
     }
 
     #[test]
@@ -82,6 +82,6 @@ pub mod test {
             contents: vec![ Blue.on(Red).paint("3,005") ].into(),
         };
 
-        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()).into());
+        assert_eq!(expected, stati.render(&TestColours, &locale::Numeric::english()));
     }
 }

src/output/render/octal.rs

@@ -6,7 +6,7 @@ use crate::output::cell::TextCell;
 
 impl f::OctalPermissions {
     fn bits_to_octal(r: bool, w: bool, x: bool) -> u8 {
-        (r as u8) * 4 + (w as u8) * 2 + (x as u8)
+        u8::from(r) * 4 + u8::from(w) * 2 + u8::from(x)
     }
 
     pub fn render(&self, style: Style) -> TextCell {
@@ -40,7 +40,7 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "0755");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
     }
 
     #[test]
@@ -54,7 +54,7 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "0644");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
     }
 
     #[test]
@@ -68,7 +68,7 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "0600");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
     }
 
     #[test]
@@ -82,7 +82,7 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "4777");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
 
     }
 
@@ -97,7 +97,7 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "2777");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
     }
 
     #[test]
@@ -111,6 +111,6 @@ pub mod test {
         let octal = f::OctalPermissions{ permissions: bits };
 
         let expected = TextCell::paint_str(Purple.bold(), "1777");
-        assert_eq!(expected, octal.render(Purple.bold()).into());
+        assert_eq!(expected, octal.render(Purple.bold()));
     }
 }

src/output/render/size.rs

@@ -153,7 +153,7 @@ pub mod test {
 
     #[test]
     fn file_bytes() {
-        let directory = f::Size::Some(1048576);
+        let directory = f::Size::Some(1_048_576);
         let expected = TextCell {
             width: DisplayWidth::from(9),
             contents: vec![

src/output/table.rs

@@ -21,7 +21,7 @@ use crate::theme::Theme;
 
 
 /// Options for displaying a table.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Options {
     pub size_format: SizeFormat,
     pub time_format: TimeFormat,
@@ -31,7 +31,7 @@ pub struct Options {
 
 /// Extra columns to display in the table.
 #[allow(clippy::struct_excessive_bools)]
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct Columns {
 
     /// At least one of these timestamps will be shown.
@@ -200,8 +200,8 @@ impl Column {
 
 
 /// Formatting options for file sizes.
-#[allow(clippy::pub_enum_variant_names)]
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[allow(clippy::enum_variant_names)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum SizeFormat {
 
     /// Format the file size using **decimal** prefixes, such as “kilo”,
@@ -217,7 +217,7 @@ pub enum SizeFormat {
 }
 
 /// Formatting options for user and group.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum UserFormat {
     /// The UID / GID
     Numeric,
@@ -234,7 +234,7 @@ impl Default for SizeFormat {
 
 /// The types of a file’s time fields. These three fields are standard
 /// across most (all?) operating systems.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum TimeType {
 
     /// The file’s modified time (`st_mtime`).
@@ -269,7 +269,7 @@ impl TimeType {
 ///
 /// There should always be at least one of these — there’s no way to disable
 /// the time columns entirely (yet).
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 #[allow(clippy::struct_excessive_bools)]
 pub struct TimeTypes {
     pub modified: bool,
@@ -347,7 +347,7 @@ fn determine_time_zone() -> TZResult<TimeZone> {
             } else {
                 format!("/usr/share/zoneinfo/{}", {
                     if file.starts_with(':') {
-                        file.replacen(":", "", 1)
+                        file.replacen(':', "", 1)
                     } else {
                         file
                     }

src/output/time.rs

@@ -25,7 +25,7 @@ use unicode_width::UnicodeWidthStr;
 ///
 /// Currently exa does not support *custom* styles, where the user enters a
 /// format string in an environment variable or something. Just these four.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum TimeFormat {
 
     /// The **default format** uses the user’s locale to print month names,
@@ -87,7 +87,7 @@ fn default_zoned(time: SystemTime, zone: &TimeZone) -> String {
 }
 
 fn get_dateformat(date: &LocalDateTime) -> &'static DateFormat<'static> {
-    match (is_recent(&date), *MAXIMUM_MONTH_WIDTH) {
+    match (is_recent(date), *MAXIMUM_MONTH_WIDTH) {
         (true, 4)   => &FOUR_WIDE_DATE_TIME,
         (true, 5)   => &FIVE_WIDE_DATE_TIME,
         (true, _)   => &OTHER_WIDE_DATE_TIME,

src/output/tree.rs

@@ -39,7 +39,7 @@
 //! each directory)
 
 
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum TreePart {
 
     /// Rightmost column, *not* the last in the directory.
@@ -253,19 +253,19 @@ mod iter_test {
     #[test]
     fn test_iteration() {
         let foos = &[ "first", "middle", "last" ];
-        let mut iter = TreeDepth::root().iterate_over(foos.into_iter());
+        let mut iter = TreeDepth::root().iterate_over(foos.iter());
 
         let next = iter.next().unwrap();
         assert_eq!(&"first", next.1);
-        assert_eq!(false, next.0.last);
+        assert!(!next.0.last);
 
         let next = iter.next().unwrap();
         assert_eq!(&"middle", next.1);
-        assert_eq!(false, next.0.last);
+        assert!(!next.0.last);
 
         let next = iter.next().unwrap();
         assert_eq!(&"last", next.1);
-        assert_eq!(true, next.0.last);
+        assert!(next.0.last);
 
         assert!(iter.next().is_none());
     }
@@ -273,7 +273,7 @@ mod iter_test {
     #[test]
     fn test_empty() {
         let nothing: &[usize] = &[];
-        let mut iter = TreeDepth::root().iterate_over(nothing.into_iter());
+        let mut iter = TreeDepth::root().iterate_over(nothing.iter());
         assert!(iter.next().is_none());
     }
 }

src/theme/mod.rs

@@ -14,7 +14,7 @@ pub use self::lsc::LSColors;
 mod default_theme;
 
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub struct Options {
 
     pub use_colours: UseColours,
@@ -31,7 +31,7 @@ pub struct Options {
 /// Turning them on when output is going to, say, a pipe, would make programs
 /// such as `grep` or `more` not work properly. So the `Automatic` mode does
 /// this check and only displays colours when they can be truly appreciated.
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum UseColours {
 
     /// Display them even when output isn’t going to a terminal.
@@ -44,13 +44,13 @@ pub enum UseColours {
     Never,
 }
 
-#[derive(PartialEq, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub enum ColourScale {
     Fixed,
     Gradient,
 }
 
-#[derive(PartialEq, Debug, Default)]
+#[derive(PartialEq, Eq, Debug, Default)]
 pub struct Definitions {
     pub ls: Option<String>,
     pub exa: Option<String>,
@@ -262,11 +262,11 @@ impl render::SizeColours for Theme {
         use number_prefix::Prefix::*;
 
         match prefix {
-            None                    => self.ui.size.number_byte,
-            Some(Kilo) | Some(Kibi) => self.ui.size.number_kilo,
-            Some(Mega) | Some(Mebi) => self.ui.size.number_mega,
-            Some(Giga) | Some(Gibi) => self.ui.size.number_giga,
-            Some(_)                 => self.ui.size.number_huge,
+            Some(Kilo | Kibi) => self.ui.size.number_kilo,
+            Some(Mega | Mebi) => self.ui.size.number_mega,
+            Some(Giga | Gibi) => self.ui.size.number_giga,
+            Some(_)           => self.ui.size.number_huge,
+            None              => self.ui.size.number_byte,
         }
     }
 
@@ -274,11 +274,11 @@ impl render::SizeColours for Theme {
         use number_prefix::Prefix::*;
 
         match prefix {
-            None                    => self.ui.size.unit_byte,
-            Some(Kilo) | Some(Kibi) => self.ui.size.unit_kilo,
-            Some(Mega) | Some(Mebi) => self.ui.size.unit_mega,
-            Some(Giga) | Some(Gibi) => self.ui.size.unit_giga,
-            Some(_)                 => self.ui.size.unit_huge,
+            Some(Kilo | Kibi) => self.ui.size.unit_kilo,
+            Some(Mega | Mebi) => self.ui.size.unit_mega,
+            Some(Giga | Gibi) => self.ui.size.unit_giga,
+            Some(_)           => self.ui.size.unit_huge,
+            None              => self.ui.size.unit_byte,
         }
     }