Add cat2bat translator for cat to bat flag translation

CLAUDE.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-reflag is a Go CLI tool that translates command-line flags between traditional UNIX tools and their modern replacements. It supports 8 translators covering common tools like ls, find, grep, du, ps, dig, less, and more.
+reflag is a Go CLI tool that translates command-line flags between traditional UNIX tools and their modern replacements. It supports 9 translators covering common tools like cat, ls, find, grep, du, ps, dig, less, and more.
 
 ## Build and Test Commands
 
@@ -38,6 +38,7 @@ reflag/
 │   ├── translator.go             # Translator interface
 │   ├── registry.go               # Global translator registry
 │   ├── translator_test.go        # Registry tests
+│   ├── cat2bat/                  # cat → bat (plain mode)
 │   ├── ls2eza/                   # ls → eza (BSD/GNU modes)
 │   ├── find2fd/                  # find → fd (glob→regex conversion)
 │   ├── grep2rg/                  # grep → ripgrep
@@ -74,6 +75,7 @@ reflag/
 
 | Translator | Source | Target | IncludeInInit | Notes |
 |------------|--------|--------|---------------|-------|
+| cat2bat | cat | bat | true | Plain mode with auto colorization |
 | ls2eza | ls | eza | true | BSD/GNU mode detection |
 | find2fd | find | fd | true | Glob-to-regex conversion |
 | grep2rg | grep | ripgrep | true | Pattern handling |
@@ -113,6 +115,7 @@ These flags have different meanings between BSD and GNU ls:
 
 ### Other Translators
 
+- **cat2bat**: Converts cat commands to bat with plain mode flags (-p, --paging=never, --color=auto) to make bat behave like cat while preserving auto colorization
 - **find2fd**: Converts find expressions to fd syntax, including glob-to-regex pattern conversion
 - **grep2rg**: Translates grep flags to ripgrep, handles include/exclude patterns
 - **du2dust**: Converts du flags including unit/block size mappings

README.md

@@ -4,6 +4,7 @@
 
 A tool that translates command-line flags between different CLI tools. Currently supports:
 
+- `cat` → [bat](https://github.com/sharkdp/bat)
 - `ls` → [eza](https://github.com/eza-community/eza)
 - `grep` → [ripgrep](https://github.com/BurntSushi/ripgrep)
 - `find` → [fd](https://github.com/sharkdp/fd)
@@ -58,16 +59,16 @@ Install the tools you want to use. For example:
 
 ```bash
 # macOS
-brew install eza fd ripgrep dust procs doggo moor duf
+brew install bat eza fd ripgrep dust procs doggo moor duf
 
 # Linux (Ubuntu/Debian)
-sudo apt install eza fd-find ripgrep dust procs
+sudo apt install bat eza fd-find ripgrep dust procs
 
 # Linux (Fedora)
-sudo dnf install eza fd-find ripgrep dust procs
+sudo dnf install bat eza fd-find ripgrep dust procs
 
 # Arch Linux
-sudo pacman -S eza fd ripgrep dust procs
+sudo pacman -S bat eza fd ripgrep dust procs
 ```
 
 **Note:** `moor` may need to be installed separately on some platforms. See the [moor installation guide](https://github.com/walles/moor#installing).
@@ -94,14 +95,14 @@ echo 'reflag --init fish | source' >> ~/.config/fish/config.fish && source ~/.co
 ### 4. Start using your familiar commands
 
 ```bash
-ls -ltr          # Uses eza under the hood
-grep -rni TODO   # Uses ripgrep
-find . -name '*.go'  # Uses fd
-df -h            # Uses duf
-du -h            # Uses dust
-ps aux           # Uses procs
+ls -ltr             # Uses eza under the hood
+grep -rni TODO      # Uses ripgrep
+find . -name '*.go' # Uses fd
+df -h               # Uses duf
+du -h               # Uses dust
+ps aux              # Uses procs
 dig example.com MX  # Uses doggo
-less -S file.txt # Uses moor
+less -S file.txt    # Uses moor
 ```
 
 That's it! Your muscle memory still works, but you get modern tool output.
@@ -315,6 +316,68 @@ ls and eza have opposite default sort orders for time and size sorting. reflag a
 | `-w` | Raw non-printable chars (ignored) | Output width (`-w COLS`) |
 | `-D` | Date format (`-D FORMAT`) | Dired mode (ignored) |
 
+## cat2bat Translator
+
+The cat2bat translator converts `cat` commands to `bat` with flags that make bat behave like cat.
+
+### Key Features
+
+- **Plain output**: Always adds `-p` (plain style) to disable bat's decorations like line numbers, grid borders, and file headers
+- **No paging**: Adds `--paging=never` to disable bat's automatic paging behavior
+- **Smart colorization**: Uses `--color=auto` to enable syntax highlighting when output goes to a terminal, but disables it when piped or redirected
+
+### Supported Flags
+
+| cat flag | bat equivalent | Description |
+|----------|----------------|-------------|
+| `-n` | `-n` | Number all output lines |
+| `--number` | `-n` | Number all output lines |
+| `-s` | `-s` | Squeeze multiple blank lines into one |
+| `--squeeze-blank` | `-s` | Squeeze multiple blank lines |
+| `-A` | `-A` | Show non-printable characters |
+| `--show-all` | `-A` | Show non-printable characters |
+| `-u` | `-u` | Unbuffered output |
+| `--unbuffered` | `-u` | Unbuffered output |
+
+### Ignored Flags
+
+All bat-specific flags are ignored since the goal is cat-like behavior:
+- Syntax highlighting options (`-l`, `--language`, `--theme`)
+- Line highlighting (`-H`, `--highlight-line`)
+- Decorations (`--style`, `--decorations`)
+- Git integration (`-d`, `--diff`)
+- File metadata (`--file-name`)
+- And other bat-specific features
+
+### Examples
+
+```bash
+$ reflag cat bat README.md
+bat -p --paging=never --color=auto README.md
+
+$ reflag cat bat -n file.txt
+bat -p --paging=never --color=auto -n file.txt
+
+$ reflag cat bat -ns file1.txt file2.txt
+bat -p --paging=never --color=auto -n -s file1.txt file2.txt
+
+# Color output when viewing in terminal
+$ reflag cat bat file.rs
+# Shows syntax-highlighted Rust code
+
+# No color when piping to other commands
+$ reflag cat bat file.rs | grep "fn"
+# Plain output suitable for grep
+```
+
+### Why Use This?
+
+While bat is designed to be a cat replacement with syntax highlighting, sometimes you want:
+- The simplicity of cat's output
+- Syntax highlighting only when appropriate (terminal vs pipe)
+- To maintain muscle memory for cat flags
+- A gradual transition from cat to bat
+
 ## grep2rg Translator
 
 The grep2rg translator converts `grep` flags to `rg` (ripgrep) equivalents.

main.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"github.com/kluzzebass/reflag/translator"
+	_ "github.com/kluzzebass/reflag/translator/bat2cat"   // Register bat2cat translator
 	_ "github.com/kluzzebass/reflag/translator/df2duf"    // Register df2duf translator
 	_ "github.com/kluzzebass/reflag/translator/dig2doggo" // Register dig2doggo translator
 	_ "github.com/kluzzebass/reflag/translator/du2dust"   // Register du2dust translator

translator/bat2cat/translator.go

@@ -0,0 +1,174 @@
+package bat2cat
+
+import (
+	"strings"
+
+	"github.com/kluzzebass/reflag/translator"
+)
+
+func init() {
+	translator.Register(&Translator{})
+}
+
+// Translator implements the cat to bat flag translation
+type Translator struct{}
+
+func (t *Translator) Name() string        { return "cat2bat" }
+func (t *Translator) SourceTool() string  { return "cat" }
+func (t *Translator) TargetTool() string  { return "bat" }
+func (t *Translator) IncludeInInit() bool { return false }
+
+// Translate converts cat arguments to bat arguments to make bat behave like cat
+func (t *Translator) Translate(args []string, mode string) []string {
+	return translateFlags(args)
+}
+
+// Map of bat short flags to cat equivalents
+var flagMap = map[rune]string{
+	'n': "-n", // --number → -n (line numbers)
+	's': "-s", // --squeeze-blank → -s (squeeze blank lines)
+	'u': "-u", // --unbuffered → -u (unbuffered, though bat ignores this)
+	'A': "-A", // --show-all → approximates -A (show non-printable)
+}
+
+func translateFlags(args []string) []string {
+	var result []string
+	skipNext := false
+
+	// To make bat behave like cat, we need to:
+	// 1. Always add -p (plain style, no decorations)
+	// 2. Always add --paging=never (disable pager)
+	// 3. Allow default colorization with --color=auto
+	result = append(result, "-p", "--paging=never", "--color=auto")
+
+	for i, arg := range args {
+		if skipNext {
+			skipNext = false
+			continue
+		}
+
+		// Handle -- separator (everything after is files)
+		if arg == "--" {
+			result = append(result, args[i:]...)
+			break
+		}
+
+		// Handle long options
+		if strings.HasPrefix(arg, "--") {
+			handleLongFlag(arg, args, i, &result, &skipNext)
+			continue
+		}
+
+		// Handle short options
+		if strings.HasPrefix(arg, "-") && len(arg) > 1 && arg[1] != '-' {
+			handleShortFlags(arg, args, i, &result, &skipNext)
+			continue
+		}
+
+		// Regular file argument
+		result = append(result, arg)
+	}
+
+	return result
+}
+
+func handleLongFlag(arg string, args []string, i int, result *[]string, skipNext *bool) {
+	// Handle --option=value format
+	if idx := strings.Index(arg, "="); idx != -1 {
+		opt := arg[:idx]
+		val := arg[idx+1:]
+
+		switch opt {
+		case "--number":
+			*result = append(*result, "-n")
+		case "--squeeze-blank":
+			*result = append(*result, "-s")
+		case "--show-all":
+			*result = append(*result, "-A")
+		case "--file-name":
+			// cat doesn't have this, ignore
+		case "--language", "--highlight-line", "--diff-context", "--tabs", "--wrap",
+			"--terminal-width", "--color", "--italic-text", "--decorations", "--paging",
+			"--pager", "--map-syntax", "--ignored-suffix", "--theme", "--theme-light",
+			"--theme-dark", "--style", "--line-range", "--squeeze-limit", "--strip-ansi",
+			"--nonprintable-notation", "--binary":
+			// These are bat-specific features that cat doesn't have
+			// They're overridden by our plain mode settings
+		default:
+			// Unknown option, might be a file starting with --
+			*result = append(*result, arg)
+		}
+		// Suppress unused variable warning
+		_ = val
+		return
+	}
+
+	// Handle flags without =value
+	switch arg {
+	case "--number":
+		*result = append(*result, "-n")
+	case "--squeeze-blank":
+		*result = append(*result, "-s")
+	case "--show-all":
+		*result = append(*result, "-A")
+	case "--unbuffered":
+		*result = append(*result, "-u")
+	case "--plain", "--force-colorization", "--diff", "--list-themes", "--list-languages",
+		"--chop-long-lines", "--diagnostic", "--acknowledgements", "--set-terminal-title",
+		"--help", "--version":
+		// These are bat-specific, ignore or they're already handled
+	default:
+		// Check if next arg is a value for this flag
+		if i+1 < len(args) && !strings.HasPrefix(args[i+1], "-") {
+			switch arg {
+			case "--language", "--highlight-line", "--file-name", "--diff-context",
+				"--tabs", "--wrap", "--terminal-width", "--color", "--italic-text",
+				"--decorations", "--paging", "--pager", "--map-syntax", "--ignored-suffix",
+				"--theme", "--theme-light", "--theme-dark", "--style", "--line-range",
+				"--squeeze-limit", "--strip-ansi", "--nonprintable-notation", "--binary",
+				"--completion":
+				// These take values but are bat-specific, skip both flag and value
+				*skipNext = true
+			default:
+				// Unknown flag with potential value, keep it (might be a file)
+				*result = append(*result, arg)
+			}
+		} else {
+			// Unknown flag without value, might be a file
+			*result = append(*result, arg)
+		}
+	}
+}
+
+func handleShortFlags(arg string, args []string, i int, result *[]string, skipNext *bool) {
+	flags := arg[1:] // Remove leading dash
+
+	// Check for combined flags like -pp or -ns
+	for j, flag := range flags {
+		if mapped, ok := flagMap[flag]; ok {
+			*result = append(*result, mapped)
+		} else {
+			// Flags without direct mapping or bat-specific flags
+			switch flag {
+			case 'p':
+				// -p (plain) is already added by default, ignore
+			case 'l', 'H', 'm':
+				// These flags take values, skip the next argument
+				// Only skip if this is the last flag in a combined set
+				if j == len(flags)-1 && i+1 < len(args) {
+					*skipNext = true
+				}
+			case 'd', 'f', 'L', 'r', 'S':
+				// These are bat-specific flags that don't take values, ignore
+			case 'V':
+				// -V (version), ignore
+			case 'h':
+				// -h (help), ignore
+			default:
+				// Unknown single char flag
+				// Could be a typo or actual flag, preserve it
+				*result = append(*result, "-"+string(flag))
+			}
+		}
+	}
+}