Derive fmt::Debug whenever possible

src/assets.rs

@@ -16,6 +16,7 @@ use crate::syntax_mapping::SyntaxMapping;
 
 pub const BAT_THEME_DEFAULT: &str = "Monokai Extended";
 
+#[derive(Debug)]
 pub struct HighlightingAssets {
     pub syntax_set: SyntaxSet,
     pub theme_set: ThemeSet,

src/decorations.rs

@@ -2,7 +2,7 @@ use crate::diff::LineChange;
 use crate::printer::{Colors, InteractivePrinter};
 use ansi_term::Style;
 
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct DecorationText {
     pub width: usize,
     pub text: String,

src/lib.rs

@@ -76,7 +76,7 @@ use line_range::LineRanges;
 use style::{OutputComponents, OutputWrap};
 use syntax_mapping::SyntaxMapping;
 
-#[derive(Clone, Default)]
+#[derive(Debug, Clone, Default)]
 pub struct Config<'a> {
     /// List of files to print
     pub files: Vec<InputFile<'a>>,

src/line_range.rs

@@ -1,6 +1,6 @@
 use crate::errors::*;
 
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct LineRange {
     pub lower: usize,
     pub upper: usize,
@@ -89,7 +89,7 @@ pub enum RangeCheckResult {
     AfterLastRange,
 }
 
-#[derive(Clone, Default)]
+#[derive(Debug, Clone, Default)]
 pub struct LineRanges {
     ranges: Vec<LineRange>,
     largest_upper_bound: usize,

src/output.rs

@@ -9,6 +9,7 @@ use shell_words;
 use crate::errors::*;
 use crate::PagingMode;
 
+#[derive(Debug)]
 pub enum OutputType {
     Pager(Child),
     Stdout(io::Stdout),

src/printer.rs

@@ -567,7 +567,7 @@ impl<'a> Printer for InteractivePrinter<'a> {
 
 const DEFAULT_GUTTER_COLOR: u8 = 238;
 
-#[derive(Default)]
+#[derive(Debug, Default)]
 pub struct Colors {
     pub grid: Style,
     pub filename: Style,

src/style.rs

@@ -72,7 +72,7 @@ impl FromStr for OutputComponent {
     }
 }
 
-#[derive(Clone, Default)]
+#[derive(Debug, Clone, Default)]
 pub struct OutputComponents(pub HashSet<OutputComponent>);
 
 impl OutputComponents {