feat: colored help message

.pre-commit-config.yaml

@@ -2,7 +2,7 @@
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.0.1
+  rev: v5.0.0
   hooks:
   - id: trailing-whitespace
   - id: check-yaml

src/cli.rs

@@ -1,11 +1,26 @@
 use std::path::PathBuf;
 
-use clap::{Parser, ValueEnum, ValueHint};
+use clap::ValueHint;
+use clap::{
+    builder::{
+        styling::{AnsiColor, Effects},
+        Styles,
+    },
+    Parser, ValueEnum,
+};
 
 #[derive(Parser)]
-#[command(about, version)]
-#[command(disable_help_subcommand = true)]
-#[command(next_line_help = true)]
+#[clap(about, version)]
+#[clap(disable_help_subcommand = true)]
+#[clap(next_line_help = true)]
+#[clap(
+    styles(Styles::styled()
+        .header(AnsiColor::Yellow.on_default() | Effects::BOLD)
+        .usage(AnsiColor::Yellow.on_default() | Effects::BOLD)
+        .literal(AnsiColor::Green.on_default() | Effects::BOLD)
+        .placeholder(AnsiColor::Cyan.on_default())
+    )
+)]
 pub struct App {
     /// File to view.
     #[arg(name = "FILE", value_hint = ValueHint::FilePath)]

src/table/row.rs

@@ -17,7 +17,7 @@ impl<'a> FromIterator<&'a str> for Row<'a> {
     }
 }
 
-impl<'a> Row<'a> {
+impl Row<'_> {
     pub fn write<T: Write>(&self, wtr: &mut T, fmt: &Style, widths: &[usize], align: Alignment) -> Result<()> {
         let sep = fmt.colseps.mid.map(|c| c.to_string()).unwrap_or_default();
         write!(wtr, "{:indent$}", "", indent = fmt.indent)?;