Merge branch 'sharkdp:master' into master

.github/dependabot.yml

@@ -16,3 +16,9 @@ updates:
     interval: monthly
     time: "04:00"
     timezone: Europe/Berlin
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: "04:00"
+    timezone: Europe/Berlin

.github/workflows/CICD.yml

@@ -24,14 +24,14 @@ jobs:
         default: true
         profile: minimal
         components: rustfmt
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - run: cargo fmt -- --check
 
   license_checks:
     name: License checks
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         submodules: true # we especially want to perform license checks on submodules
     - run: tests/scripts/license-checks.sh
@@ -43,7 +43,7 @@ jobs:
       MSRV_FEATURES: --no-default-features --features minimal-application,bugreport,build-assets
     steps:
     - name: Checkout source code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install rust toolchain (v${{ env.MIN_SUPPORTED_RUST_VERSION }})
       uses: actions-rs/toolchain@v1
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Git checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         submodules: true # we need all syntax and theme submodules
     - name: Install Rust toolchain
@@ -113,7 +113,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Git checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Prepare environment variables
       run: |
         echo "BAT_SYSTEM_CONFIG_PREFIX=$GITHUB_WORKSPACE/tests/examples/system_config" >> $GITHUB_ENV
@@ -139,7 +139,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Git checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Install Rust toolchain
       uses: actions-rs/toolchain@v1
       with:
@@ -186,7 +186,7 @@ jobs:
           - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04, use-cross: true }
     steps:
     - name: Checkout source code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install prerequisites
       shell: bash

CHANGELOG.md

@@ -13,6 +13,13 @@
 ## `bat` as a library
 
 
+# v0.22.1
+
+## Bugfixes
+
+- Bring back pre-processing of ANSI escape characters to so that some common `bat` use cases starts working again. See #2308 (@Enselic)
+
+
 # v0.22.0
 
 ## Features

Cargo.lock

@@ -74,7 +74,7 @@ checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 
 [[package]]
 name = "bat"
-version = "0.22.0"
+version = "0.22.1"
 dependencies = [
  "ansi_colours",
  "ansi_term",
@@ -231,13 +231,13 @@ dependencies = [
 
 [[package]]
 name = "console"
-version = "0.15.1"
+version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89eab4d20ce20cea182308bca13088fecea9c05f6776cf287205d41a0ed3c847"
+checksum = "c050367d967ced717c04b65d8c619d863ef9292ce0c5760028655a2fb298718c"
 dependencies = [
  "encode_unicode",
+ "lazy_static",
  "libc",
- "once_cell",
  "terminal_size",
  "unicode-width",
  "winapi",
@@ -699,9 +699,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.13.1"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "074864da206b4973b84eb91683020dbefd6a8c3f0f38e054d93954e891935e4e"
+checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"
 
 [[package]]
 name = "onig"
@@ -964,24 +964,24 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "semver"
-version = "1.0.13"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93f6841e709003d68bb2deee8c343572bf446003ec20a583e76f7b15cebf3711"
+checksum = "e25dfac463d778e353db5be2449d1cce89bd6fd23c9f1ea21310ce6e5a1b29c4"
 
 [[package]]
 name = "serde"
-version = "1.0.144"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.144"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+checksum = "81fa1584d3d1bcacd84c277a0dfe21f5b0f6accf4a23d04d4c6d61f1af522b4c"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1160,18 +1160,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.33"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d0a539a918745651435ac7db7a18761589a94cd7e94cd56999f828bf73c8a57"
+checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.33"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c251e90f708e16c49a16f4917dc2131e75222b72edfa9cb7f7c58ae56aae0c09"
+checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1226,9 +1226,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-width"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
+checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
 [[package]]
 name = "url"

Cargo.toml

@@ -6,7 +6,7 @@ homepage = "https://github.com/sharkdp/bat"
 license = "MIT/Apache-2.0"
 name = "bat"
 repository = "https://github.com/sharkdp/bat"
-version = "0.22.0"
+version = "0.22.1"
 exclude = ["assets/syntaxes/*", "assets/themes/*"]
 build = "build.rs"
 edition = '2018'
@@ -44,15 +44,15 @@ atty = { version = "0.2.14", optional = true }
 ansi_term = "^0.12.1"
 ansi_colours = "^1.1"
 bincode = "1.0"
-console = "0.15.1"
+console = "0.15.2"
 flate2 = "1.0"
-once_cell = "1.13"
+once_cell = "1.15"
 thiserror = "1.0"
 wild = { version = "2.1", optional = true }
 content_inspector = "0.2.4"
 encoding = "0.2"
 shell-words = { version = "1.1.0", optional = true }
-unicode-width = "0.1.9"
+unicode-width = "0.1.10"
 globset = "0.4"
 serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.8"

assets/completions/bat.bash.in

@@ -10,6 +10,27 @@ __bat_init_completion()
 	_get_comp_words_by_ref "$@" cur prev words cword
 }
 
+__bat_escape_completions()
+{
+	# Do not escape if completing a quoted value.
+	[[ $cur == [\"\']* ]] && return 0
+	# printf -v to an array index is available in bash >= 4.1.
+	# Use it if available, as -o filenames is semantically incorrect if
+	# we are not actually completing filenames, and it has side effects
+	# (e.g. adds trailing slash to candidates matching present dirs).
+	if ((
+		BASH_VERSINFO[0] > 4 || \
+		BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] > 0
+	)); then
+		local i
+		for i in ${!COMPREPLY[*]}; do
+			printf -v "COMPREPLY[i]" %q "${COMPREPLY[i]}"
+		done
+	else
+		compopt -o filenames
+	fi
+}
+
 _bat() {
 	local cur prev words cword split=false
 	if declare -F _init_completion >/dev/null 2>&1; then
@@ -27,7 +48,12 @@ _bat() {
 			;;
 		esac
 		COMPREPLY=($(compgen -W "
-			--build --clear --source --target --blank --help
+			--build
+			--clear
+			--source
+			--target
+			--blank
+			--help
 		" -- "$cur"))
 		return 0
 	fi
@@ -40,13 +66,26 @@ _bat() {
 				printf "%s\n" "$lang"
 			done
 		)" -- "$cur"))
-		compopt -o filenames  # for escaping
+                __bat_escape_completions
 		return 0
 		;;
-	-H | --highlight-line | --diff-context | --tabs | --terminal-width | \
+	-H | --highlight-line | \
-	-m | --map-syntax | --style | --line-range | -h | --help | -V | \
+	--diff-context | \
-	--version | --diagnostic | --config-file | --config-dir | \
+	--tabs | \
-	--cache-dir | --generate-config-file)
+	--terminal-width | \
+	-m | --map-syntax | \
+	--ignored-suffix | \
+	--list-themes | \
+	--line-range | \
+	-L | --list-languages | \
+	--diagnostic | \
+	--acknowledgements | \
+	-h | --help | \
+	-V | --version | \
+	--cache-dir | \
+	--config-dir | \
+	--config-file | \
+	--generate-config-file)
 		# argument required but no completion available, or option
 		# causes an exit
 		return 0
@@ -74,22 +113,71 @@ _bat() {
 	--theme)
 		local IFS=$'\n'
 		COMPREPLY=($(compgen -W "$("$1" --list-themes)" -- "$cur"))
-		compopt -o filenames  # for escaping
+                __bat_escape_completions
 		return 0
 		;;
+	--style)
+		# shellcheck disable=SC2034
+		local -a styles=(
+			default
+			full
+			auto
+			plain
+			changes
+			header
+			header-filename
+			header-filesize
+			grid
+			rule
+			numbers
+			snip
+		)
+                # shellcheck disable=SC2016
+		if declare -F _comp_delimited >/dev/null 2>&1; then
+			# bash-completion > 2.11
+			_comp_delimited , -W '"${styles[@]}"'
+		else
+			COMPREPLY=($(compgen -W '${styles[@]}' -- "$cur"))
+		fi
+		return 0
 	esac
 
 	$split && return 0
 
 	if [[ $cur == -* ]]; then
+		# --unbuffered excluded intentionally (no-op)
 		COMPREPLY=($(compgen -W "
-			--show-all --plain --language --highlight-line
+			--show-all
-			--file-name --diff --diff-context --tabs --wrap
+			--plain
-			--terminal-width --number --color --italic-text
+			--language
-			--decorations --paging --pager --map-syntax --theme
+			--highlight-line
-			--list-themes --style --line-range --list-languages
+			--file-name
-			--help --version --force-colorization --unbuffered
+			--diff
-			--diagnostic --config-file --config-dir --cache-dir
+			--diff-context
+			--tabs
+			--wrap
+			--terminal-width
+			--number
+			--color
+			--italic-text
+			--decorations
+			--force-colorization
+			--paging
+			--pager
+			--map-syntax
+			--ignored-suffix
+			--theme
+			--list-themes
+			--style
+			--line-range
+			--list-languages
+			--diagnostic
+			--acknowledgements
+			--help
+			--version
+			--cache-dir
+			--config-dir
+			--config-file
 			--generate-config-file
 		" -- "$cur"))
 		return 0

doc/README-ja.md

@@ -186,7 +186,7 @@ man 2 select
 ###  On Ubuntu (`apt` を使用)
 *... や他のDebianベースのLinuxディストリビューション*
 
-Ubuntu Eoan 19.10 または Debian 不安定版 sid 以降の [the Ubuntu `bat` package](https://packages.ubuntu.com/eoan/bat) または [the Debian `bat` package](https://packages.debian.org/sid/bat) からインストールできます:
+[20.04 ("Focal") 以降の Ubuntu](https://packages.ubuntu.com/search?keywords=bat&exact=1) または [2021 年 8 月以降の Debian (Debian 11 - "Bullseye")](https://packages.debian.org/bullseye/bat) では `bat` パッケージが利用できます。
 
 ```bash
 apt install bat

src/lib.rs

@@ -46,6 +46,7 @@ pub(crate) mod printer;
 pub mod style;
 pub(crate) mod syntax_mapping;
 mod terminal;
+mod vscreen;
 pub(crate) mod wrapping;
 
 pub use pretty_printer::{Input, PrettyPrinter, Syntax};

src/preprocessor.rs

@@ -1,28 +1,37 @@
 use std::fmt::Write;
 
+use console::AnsiCodeIterator;
+
 /// Expand tabs like an ANSI-enabled expand(1).
-pub fn expand_tabs(mut text: &str, width: usize, cursor: &mut usize) -> String {
+pub fn expand_tabs(line: &str, width: usize, cursor: &mut usize) -> String {
-    let mut buffer = String::with_capacity(text.len() * 2);
+    let mut buffer = String::with_capacity(line.len() * 2);
 
-    while let Some(index) = text.find('\t') {
+    for chunk in AnsiCodeIterator::new(line) {
-        // Add previous text.
+        match chunk {
-        if index > 0 {
+            (text, true) => buffer.push_str(text),
-            *cursor += index;
+            (mut text, false) => {
-            buffer.push_str(&text[0..index]);
+                while let Some(index) = text.find('\t') {
+                    // Add previous text.
+                    if index > 0 {
+                        *cursor += index;
+                        buffer.push_str(&text[0..index]);
+                    }
+
+                    // Add tab.
+                    let spaces = width - (*cursor % width);
+                    *cursor += spaces;
+                    buffer.push_str(&*" ".repeat(spaces));
+
+                    // Next.
+                    text = &text[index + 1..text.len()];
+                }
+
+                *cursor += text.len();
+                buffer.push_str(text);
+            }
         }
-
-        // Add tab.
-        let spaces = width - (*cursor % width);
-        *cursor += spaces;
-        buffer.push_str(&*" ".repeat(spaces));
-
-        // Next.
-        text = &text[index + 1..text.len()];
     }
 
-    *cursor += text.len();
-    buffer.push_str(text);
-
     buffer
 }
 

src/printer.rs

@@ -6,6 +6,8 @@ use ansi_term::Style;
 
 use bytesize::ByteSize;
 
+use console::AnsiCodeIterator;
+
 use syntect::easy::HighlightLines;
 use syntect::highlighting::Color;
 use syntect::highlighting::Theme;
@@ -31,6 +33,7 @@ use crate::line_range::RangeCheckResult;
 use crate::preprocessor::{expand_tabs, replace_nonprintable};
 use crate::style::StyleComponent;
 use crate::terminal::{as_terminal_escaped, to_ansi_color};
+use crate::vscreen::AnsiStyle;
 use crate::wrapping::WrappingMode;
 
 pub(crate) trait Printer {
@@ -119,6 +122,7 @@ pub(crate) struct InteractivePrinter<'a> {
     config: &'a Config<'a>,
     decorations: Vec<Box<dyn Decoration>>,
     panel_width: usize,
+    ansi_style: AnsiStyle,
     content_type: Option<ContentType>,
     #[cfg(feature = "git")]
     pub line_changes: &'a Option<LineChanges>,
@@ -202,6 +206,7 @@ impl<'a> InteractivePrinter<'a> {
             config,
             decorations,
             content_type: input.reader.content_type,
+            ansi_style: AnsiStyle::new(),
             #[cfg(feature = "git")]
             line_changes,
             highlighter_from_set,
@@ -480,7 +485,7 @@ impl<'a> Printer for InteractivePrinter<'a> {
             self.config.highlighted_lines.0.check(line_number) == RangeCheckResult::InRange;
 
         if highlight_this_line && self.config.theme == "ansi" {
-            write!(handle, "\x1B[4m")?;
+            self.ansi_style.update("^[4m");
         }
 
         let background_color = self
@@ -507,37 +512,51 @@ impl<'a> Printer for InteractivePrinter<'a> {
             let italics = self.config.use_italic_text;
 
             for &(style, region) in &regions {
-                let text = &*self.preprocess(region, &mut cursor_total);
+                let ansi_iterator = AnsiCodeIterator::new(region);
-                let text_trimmed = text.trim_end_matches(|c| c == '\r' || c == '\n');
+                for chunk in ansi_iterator {
+                    match chunk {
+                        // ANSI escape passthrough.
+                        (ansi, true) => {
+                            self.ansi_style.update(ansi);
+                            write!(handle, "{}", ansi)?;
+                        }
 
-                write!(
+                        // Regular text.
-                    handle,
+                        (text, false) => {
-                    "{}",
+                            let text = &*self.preprocess(text, &mut cursor_total);
-                    as_terminal_escaped(
+                            let text_trimmed = text.trim_end_matches(|c| c == '\r' || c == '\n');
-                        style,
-                        text_trimmed,
-                        true_color,
-                        colored_output,
-                        italics,
-                        background_color
-                    )
-                )?;
 
-                if text.len() != text_trimmed.len() {
+                            write!(
-                    if let Some(background_color) = background_color {
+                                handle,
-                        let ansi_style = Style {
+                                "{}",
-                            background: to_ansi_color(background_color, true_color),
+                                as_terminal_escaped(
-                            ..Default::default()
+                                    style,
-                        };
+                                    &format!("{}{}", self.ansi_style, text_trimmed),
+                                    true_color,
+                                    colored_output,
+                                    italics,
+                                    background_color
+                                )
+                            )?;
 
-                        let width = if cursor_total <= cursor_max {
+                            if text.len() != text_trimmed.len() {
-                            cursor_max - cursor_total + 1
+                                if let Some(background_color) = background_color {
-                        } else {
+                                    let ansi_style = Style {
-                            0
+                                        background: to_ansi_color(background_color, true_color),
-                        };
+                                        ..Default::default()
-                        write!(handle, "{}", ansi_style.paint(" ".repeat(width)))?;
+                                    };
+
+                                    let width = if cursor_total <= cursor_max {
+                                        cursor_max - cursor_total + 1
+                                    } else {
+                                        0
+                                    };
+                                    write!(handle, "{}", ansi_style.paint(" ".repeat(width)))?;
+                                }
+                                write!(handle, "{}", &text[text_trimmed.len()..])?;
+                            }
+                        }
                     }
-                    write!(handle, "{}", &text[text_trimmed.len()..])?;
                 }
             }
 
@@ -546,82 +565,98 @@ impl<'a> Printer for InteractivePrinter<'a> {
             }
         } else {
             for &(style, region) in &regions {
-                let text = self.preprocess(
+                let ansi_iterator = AnsiCodeIterator::new(region);
-                    region.trim_end_matches(|c| c == '\r' || c == '\n'),
+                for chunk in ansi_iterator {
-                    &mut cursor_total,
+                    match chunk {
-                );
+                        // ANSI escape passthrough.
-
+                        (ansi, true) => {
-                let mut max_width = cursor_max - cursor;
+                            self.ansi_style.update(ansi);
-
+                            write!(handle, "{}", ansi)?;
-                // line buffer (avoid calling write! for every character)
-                let mut line_buf = String::with_capacity(max_width * 4);
-
-                // Displayed width of line_buf
-                let mut current_width = 0;
-
-                for c in text.chars() {
-                    // calculate the displayed width for next character
-                    let cw = c.width().unwrap_or(0);
-                    current_width += cw;
-
-                    // if next character cannot be printed on this line,
-                    // flush the buffer.
-                    if current_width > max_width {
-                        // Generate wrap padding if not already generated.
-                        if panel_wrap.is_none() {
-                            panel_wrap = if self.panel_width > 0 {
-                                Some(format!(
-                                    "{} ",
-                                    self.decorations
-                                        .iter()
-                                        .map(|d| d.generate(line_number, true, self).text)
-                                        .collect::<Vec<String>>()
-                                        .join(" ")
-                                ))
-                            } else {
-                                Some("".to_string())
-                            }
                         }
 
-                        // It wraps.
+                        // Regular text.
-                        write!(
+                        (text, false) => {
-                            handle,
+                            let text = self.preprocess(
-                            "{}\n{}",
+                                text.trim_end_matches(|c| c == '\r' || c == '\n'),
-                            as_terminal_escaped(
+                                &mut cursor_total,
-                                style,
+                            );
-                                &line_buf,
-                                self.config.true_color,
-                                self.config.colored_output,
-                                self.config.use_italic_text,
-                                background_color
-                            ),
-                            panel_wrap.clone().unwrap()
-                        )?;
 
-                        cursor = 0;
+                            let mut max_width = cursor_max - cursor;
-                        max_width = cursor_max;
 
-                        line_buf.clear();
+                            // line buffer (avoid calling write! for every character)
-                        current_width = cw;
+                            let mut line_buf = String::with_capacity(max_width * 4);
+
+                            // Displayed width of line_buf
+                            let mut current_width = 0;
+
+                            for c in text.chars() {
+                                // calculate the displayed width for next character
+                                let cw = c.width().unwrap_or(0);
+                                current_width += cw;
+
+                                // if next character cannot be printed on this line,
+                                // flush the buffer.
+                                if current_width > max_width {
+                                    // Generate wrap padding if not already generated.
+                                    if panel_wrap.is_none() {
+                                        panel_wrap = if self.panel_width > 0 {
+                                            Some(format!(
+                                                "{} ",
+                                                self.decorations
+                                                    .iter()
+                                                    .map(|d| d
+                                                        .generate(line_number, true, self)
+                                                        .text)
+                                                    .collect::<Vec<String>>()
+                                                    .join(" ")
+                                            ))
+                                        } else {
+                                            Some("".to_string())
+                                        }
+                                    }
+
+                                    // It wraps.
+                                    write!(
+                                        handle,
+                                        "{}\n{}",
+                                        as_terminal_escaped(
+                                            style,
+                                            &*format!("{}{}", self.ansi_style, line_buf),
+                                            self.config.true_color,
+                                            self.config.colored_output,
+                                            self.config.use_italic_text,
+                                            background_color
+                                        ),
+                                        panel_wrap.clone().unwrap()
+                                    )?;
+
+                                    cursor = 0;
+                                    max_width = cursor_max;
+
+                                    line_buf.clear();
+                                    current_width = cw;
+                                }
+
+                                line_buf.push(c);
+                            }
+
+                            // flush the buffer
+                            cursor += current_width;
+                            write!(
+                                handle,
+                                "{}",
+                                as_terminal_escaped(
+                                    style,
+                                    &*format!("{}{}", self.ansi_style, line_buf),
+                                    self.config.true_color,
+                                    self.config.colored_output,
+                                    self.config.use_italic_text,
+                                    background_color
+                                )
+                            )?;
+                        }
                     }
-
-                    line_buf.push(c);
                 }
-
-                // flush the buffer
-                cursor += current_width;
-                write!(
-                    handle,
-                    "{}",
-                    as_terminal_escaped(
-                        style,
-                        &line_buf,
-                        self.config.true_color,
-                        self.config.colored_output,
-                        self.config.use_italic_text,
-                        background_color
-                    )
-                )?;
             }
 
             if let Some(background_color) = background_color {
@@ -640,6 +675,7 @@ impl<'a> Printer for InteractivePrinter<'a> {
         }
 
         if highlight_this_line && self.config.theme == "ansi" {
+            self.ansi_style.update("^[24m");
             write!(handle, "\x1B[24m")?;
         }
 

src/vscreen.rs

@@ -0,0 +1,212 @@
+use std::fmt::{Display, Formatter};
+
+// Wrapper to avoid unnecessary branching when input doesn't have ANSI escape sequences.
+pub struct AnsiStyle {
+    attributes: Option<Attributes>,
+}
+
+impl AnsiStyle {
+    pub fn new() -> Self {
+        AnsiStyle { attributes: None }
+    }
+
+    pub fn update(&mut self, sequence: &str) -> bool {
+        match &mut self.attributes {
+            Some(a) => a.update(sequence),
+            None => {
+                self.attributes = Some(Attributes::new());
+                self.attributes.as_mut().unwrap().update(sequence)
+            }
+        }
+    }
+}
+
+impl Display for AnsiStyle {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self.attributes {
+            Some(ref a) => a.fmt(f),
+            None => Ok(()),
+        }
+    }
+}
+
+struct Attributes {
+    foreground: String,
+    background: String,
+    underlined: String,
+
+    /// The character set to use.
+    /// REGEX: `\^[()][AB0-3]`
+    charset: String,
+
+    /// A buffer for unknown sequences.
+    unknown_buffer: String,
+
+    /// ON:  ^[1m
+    /// OFF: ^[22m
+    bold: String,
+
+    /// ON:  ^[2m
+    /// OFF: ^[22m
+    dim: String,
+
+    /// ON:  ^[4m
+    /// OFF: ^[24m
+    underline: String,
+
+    /// ON:  ^[3m
+    /// OFF: ^[23m
+    italic: String,
+
+    /// ON:  ^[9m
+    /// OFF: ^[29m
+    strike: String,
+}
+
+impl Attributes {
+    pub fn new() -> Self {
+        Attributes {
+            foreground: "".to_owned(),
+            background: "".to_owned(),
+            underlined: "".to_owned(),
+            charset: "".to_owned(),
+            unknown_buffer: "".to_owned(),
+            bold: "".to_owned(),
+            dim: "".to_owned(),
+            underline: "".to_owned(),
+            italic: "".to_owned(),
+            strike: "".to_owned(),
+        }
+    }
+
+    /// Update the attributes with an escape sequence.
+    /// Returns `false` if the sequence is unsupported.
+    pub fn update(&mut self, sequence: &str) -> bool {
+        let mut chars = sequence.char_indices().skip(1);
+
+        if let Some((_, t)) = chars.next() {
+            match t {
+                '(' => self.update_with_charset('(', chars.map(|(_, c)| c)),
+                ')' => self.update_with_charset(')', chars.map(|(_, c)| c)),
+                '[' => {
+                    if let Some((i, last)) = chars.last() {
+                        // SAFETY: Always starts with ^[ and ends with m.
+                        self.update_with_csi(last, &sequence[2..i])
+                    } else {
+                        false
+                    }
+                }
+                _ => self.update_with_unsupported(sequence),
+            }
+        } else {
+            false
+        }
+    }
+
+    fn sgr_reset(&mut self) {
+        self.foreground.clear();
+        self.background.clear();
+        self.underlined.clear();
+        self.bold.clear();
+        self.dim.clear();
+        self.underline.clear();
+        self.italic.clear();
+        self.strike.clear();
+    }
+
+    fn update_with_sgr(&mut self, parameters: &str) -> bool {
+        let mut iter = parameters
+            .split(';')
+            .map(|p| if p.is_empty() { "0" } else { p })
+            .map(|p| p.parse::<u16>())
+            .map(|p| p.unwrap_or(0)); // Treat errors as 0.
+
+        while let Some(p) = iter.next() {
+            match p {
+                0 => self.sgr_reset(),
+                1 => self.bold = format!("\x1B[{}m", parameters),
+                2 => self.dim = format!("\x1B[{}m", parameters),
+                3 => self.italic = format!("\x1B[{}m", parameters),
+                4 => self.underline = format!("\x1B[{}m", parameters),
+                23 => self.italic.clear(),
+                24 => self.underline.clear(),
+                22 => {
+                    self.bold.clear();
+                    self.dim.clear();
+                }
+                30..=39 => self.foreground = Self::parse_color(p, &mut iter),
+                40..=49 => self.background = Self::parse_color(p, &mut iter),
+                58..=59 => self.underlined = Self::parse_color(p, &mut iter),
+                90..=97 => self.foreground = Self::parse_color(p, &mut iter),
+                100..=107 => self.foreground = Self::parse_color(p, &mut iter),
+                _ => {
+                    // Unsupported SGR sequence.
+                    // Be compatible and pretend one just wasn't was provided.
+                }
+            }
+        }
+
+        true
+    }
+
+    fn update_with_csi(&mut self, finalizer: char, sequence: &str) -> bool {
+        if finalizer == 'm' {
+            self.update_with_sgr(sequence)
+        } else {
+            false
+        }
+    }
+
+    fn update_with_unsupported(&mut self, sequence: &str) -> bool {
+        self.unknown_buffer.push_str(sequence);
+        false
+    }
+
+    fn update_with_charset(&mut self, kind: char, set: impl Iterator<Item = char>) -> bool {
+        self.charset = format!("\x1B{}{}", kind, set.take(1).collect::<String>());
+        true
+    }
+
+    fn parse_color(color: u16, parameters: &mut dyn Iterator<Item = u16>) -> String {
+        match color % 10 {
+            8 => match parameters.next() {
+                Some(5) /* 256-color */ => format!("\x1B[{};5;{}m", color, join(";", 1, parameters)),
+                Some(2) /* 24-bit color */ => format!("\x1B[{};2;{}m", color, join(";", 3, parameters)),
+                Some(c) => format!("\x1B[{};{}m", color, c),
+                _ => "".to_owned(),
+            },
+            9 => "".to_owned(),
+            _ => format!("\x1B[{}m", color),
+        }
+    }
+}
+
+impl Display for Attributes {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}{}{}{}{}{}{}{}{}",
+            self.foreground,
+            self.background,
+            self.underlined,
+            self.charset,
+            self.bold,
+            self.dim,
+            self.underline,
+            self.italic,
+            self.strike,
+        )
+    }
+}
+
+fn join(
+    delimiter: &str,
+    limit: usize,
+    iterator: &mut dyn Iterator<Item = impl ToString>,
+) -> String {
+    iterator
+        .take(limit)
+        .map(|i| i.to_string())
+        .collect::<Vec<String>>()
+        .join(delimiter)
+}

tests/integration_tests.rs

@@ -1442,6 +1442,26 @@ fn ansi_highlight_underline() {
         .stderr("");
 }
 
+// Ensure that ANSI passthrough is emitted properly for both wrapping and non-wrapping printer.
+// See https://github.com/sharkdp/bat/issues/2307 for what common use case this test tests.
+#[test]
+fn ansi_passthrough_emit() {
+    for wrapping in &["never", "character"] {
+        bat()
+            .arg("--paging=never")
+            .arg("--color=never")
+            .arg("--terminal-width=80")
+            .arg(format!("--wrap={}", wrapping))
+            .arg("--decorations=always")
+            .arg("--style=plain")
+            .write_stdin("\x1B[33mColor\nColor \x1B[m\nPlain\n")
+            .assert()
+            .success()
+            .stdout("\x1B[33m\x1B[33mColor\n\x1B[33mColor \x1B[m\nPlain\n")
+            .stderr("");
+    }
+}
+
 #[test]
 fn ignored_suffix_arg() {
     bat()