Embed the example file instead of generting it dynamically

example_cook.toml

@@ -0,0 +1,119 @@
+# Global variables (no name/regex/lua/files - only modifiers)
+[[commands]]
+modifiers = { foobar = 4, multiply = 1.5, prefix = 'NEW_', enabled = true }
+
+# Multi-regex example using variable in Lua
+[[commands]]
+name = 'RFToolsMultiply'
+regexes = [
+    'generatePerTick = !num',
+    'ticksPer\w+ = !num',
+    'generatorRFPerTick = !num',
+]
+lua = '* foobar'
+files = [
+    'polymc/instances/**/rftools*.toml',
+    'polymc\instances\**\rftools*.toml',
+]
+reset = true
+
+# Named capture groups with arithmetic and string ops
+[[commands]]
+name = 'UpdateAmountsAndItems'
+regex = '(?P<amount>!num)\s+units\s+of\s+(?P<item>[A-Za-z_\-]+)'
+lua = 'amount = amount * multiply; item = upper(item); return true'
+files = ['data/**/*.txt']
+
+# Full replacement via Lua 'replacement' variable
+[[commands]]
+name = 'BumpMinorVersion'
+regex = 'version\s*=\s*"(?P<major>!num)\.(?P<minor>!num)\.(?P<patch>!num)"'
+lua = 'replacement = format("version=\"%s.%s.%s\"", major, num(minor)+1, 0); return true'
+files = ['config/*.ini', 'config/*.cfg']
+
+# TOML multiline regex example - single quotes make regex natural!
+[[commands]]
+name = 'StressValues'
+regex = '''
+\[kinetics\.stressValues\.v2\.capacity\]
+    steam_engine = !num
+    water_wheel = !num
+    copper_valve_handle = !num
+    hand_crank = !num
+    creative_motor = !num'''
+lua = 'v1 * multiply'
+files = ['*.txt']
+isolate = true
+
+# Network configuration with complex multiline regex
+[[commands]]
+name = 'NetworkConfig'
+regex = '''
+networking\.firewall\.allowPing = true
+networking\.firewall\.allowedTCPPorts = \[ 47984 47989 47990 \]
+networking\.firewall\.allowedUDPPortRanges = \[
+    \{ from = \d+; to = \d+; \}
+    \{ from = 8000; to = 8010; \}
+\]'''
+lua = "replacement = string.gsub(block[1], 'true', 'false')"
+files = ['*.conf']
+isolate = true
+
+# Simple regex with single quotes - no escaping needed!
+[[commands]]
+name = 'EnableFlags'
+regex = 'enabled\s*=\s*(true|false)'
+lua = '= enabled'
+files = ['**/*.toml']
+
+# Demonstrate NoDedup to allow overlapping replacements
+[[commands]]
+name = 'OverlappingGroups'
+regex = '(?P<a>!num)(?P<b>!num)'
+lua = 'a = num(a) + 1; b = num(b) + 1; return true'
+files = ['overlap/**/*.txt']
+nodedup = true
+
+# Isolate command example operating on entire matched block
+[[commands]]
+name = 'IsolateUppercaseBlock'
+regex = '''BEGIN
+(?P<block>!any)
+END'''
+lua = 'block = upper(block); return true'
+files = ['logs/**/*.log']
+loglevel = 'TRACE'
+isolate = true
+
+# Using !rep placeholder and arrays of files
+[[commands]]
+name = 'RepeatPlaceholderExample'
+regex = 'name: (.*) !rep(, .* , 2)'
+lua = '-- no-op, just demonstrate placeholder; return false'
+files = ['lists/**/*.yml', 'lists/**/*.yaml']
+
+# Using string variable in Lua expression
+[[commands]]
+name = 'PrefixKeys'
+regex = '(?P<key>[A-Za-z0-9_]+)\s*='
+lua = 'key = prefix .. key; return true'
+files = ['**/*.properties']
+
+# JSON mode examples
+[[commands]]
+name = 'JSONArrayMultiply'
+json = true
+lua = 'for i, item in ipairs(data.items) do data.items[i].value = item.value * 2 end; return true'
+files = ['data/**/*.json']
+
+[[commands]]
+name = 'JSONObjectUpdate'
+json = true
+lua = 'data.version = "2.0.0"; data.enabled = true; return true'
+files = ['config/**/*.json']
+
+[[commands]]
+name = 'JSONNestedModify'
+json = true
+lua = 'if data.settings and data.settings.performance then data.settings.performance.multiplier = data.settings.performance.multiplier * 1.5 end; return true'
+files = ['settings/**/*.json']

go.mod

@@ -12,6 +12,7 @@ require (
 )
 
 require (
+	github.com/BurntSushi/toml v1.5.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/hexops/valast v1.5.0 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect

go.sum

@@ -1,5 +1,7 @@
 git.site.quack-lab.dev/dave/cylogger v1.3.0 h1:eTWPUD+ThVi8kGIsRcE0XDeoH3yFb5miFEODyKUdWJw=
 git.site.quack-lab.dev/dave/cylogger v1.3.0/go.mod h1:wctgZplMvroA4X6p8f4B/LaCKtiBcT1Pp+L14kcS8jk=
+github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
+github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/bmatcuk/doublestar/v4 v4.8.1 h1:54Bopc5c2cAvhLRAzqOGCYHYyhcDHsFF4wWIR5wKP38=
 github.com/bmatcuk/doublestar/v4 v4.8.1/go.mod h1:xBQ8jztBU6kakFMg+8WGxn0c6z1fTSPVIjEY1Wr7jzc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=

isolate_test.go

@@ -0,0 +1,417 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"cook/utils"
+
+	logger "git.site.quack-lab.dev/dave/cylogger"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsolateCommandsSequentialExecution(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "isolate-sequential-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create test file content
+	testContent := `BEGIN
+block1 content with value 42
+END
+Some other content
+BEGIN
+block2 content with value 100
+END
+More content
+BEGIN
+block3 content with value 200
+END`
+
+	testFile := filepath.Join(tmpDir, "test.txt")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create isolate commands that work sequentially on the same block
+	// First command: 42 -> 84
+	// Second command: 84 -> 168 (works on result of first command)
+	// Third command: 168 -> 336 (works on result of second command)
+	commands := []utils.ModifyCommand{
+		{
+			Name:    "MultiplyFirst",
+			Regex:   `BEGIN\n(?P<block>.*?value 42.*?)\nEND`,
+			Lua:     `replacement = "BEGIN\n" .. string.gsub(block, "42", "84") .. "\nEND"; return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+		{
+			Name:    "MultiplySecond",
+			Regex:   `BEGIN\nblock1 content with value (?P<value>!num)\nEND`,
+			Lua:     `value = "168"; return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+		{
+			Name:    "MultiplyThird",
+			Regex:   `BEGIN\nblock1 content with value (?P<value>!num)\nEND`,
+			Lua:     `value = "336"; return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+	}
+
+	// Associate files with commands
+	files := []string{"test.txt"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	if err != nil {
+		t.Fatalf("Failed to associate files with commands: %v", err)
+	}
+
+	// Verify that all three isolate commands are associated
+	association := associations["test.txt"]
+	assert.Len(t, association.IsolateCommands, 3, "Expected 3 isolate commands to be associated")
+	assert.Len(t, association.Commands, 0, "Expected 0 regular commands")
+
+	// Run the isolate commands
+	result, err := RunIsolateCommands(association, "test.txt", testContent)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run isolate commands: %v", err)
+	}
+
+	// Verify that all isolate commands were applied sequentially
+	// First command: 42 -> 84
+	// Second command: 84 -> 168 (works on result of first)
+	// Third command: 168 -> 336 (works on result of second)
+	assert.Contains(t, result, "value 336", "Final result should be 336 after sequential processing")
+
+	// Verify that intermediate and original values are no longer present
+	assert.NotContains(t, result, "value 42", "Original value 42 should be replaced")
+	assert.NotContains(t, result, "value 84", "Intermediate value 84 should be replaced")
+	assert.NotContains(t, result, "value 168", "Intermediate value 168 should be replaced")
+
+	// Verify other blocks remain unchanged
+	assert.Contains(t, result, "value 100", "Second block should remain unchanged")
+	assert.Contains(t, result, "value 200", "Third block should remain unchanged")
+
+	t.Logf("Original content:\n%s\n", testContent)
+	t.Logf("Result content:\n%s\n", result)
+}
+
+func TestIsolateCommandsWithDifferentPatterns(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "isolate-different-patterns-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create test file content with distinct patterns
+	testContent := `SECTION1
+value = 10
+END_SECTION1
+
+SECTION2
+value = 20
+END_SECTION2`
+
+	testFile := filepath.Join(tmpDir, "test.txt")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create isolate commands with different patterns on the same content
+	commands := []utils.ModifyCommand{
+		{
+			Name:    "UpdateSection1",
+			Regex:   `SECTION1.*?value = (?P<value>!num).*?END_SECTION1`,
+			Lua:     `value = "100"; return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+		{
+			Name:    "UpdateSection2",
+			Regex:   `SECTION2.*?value = (?P<value>!num).*?END_SECTION2`,
+			Lua:     `value = "200"; return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+	}
+
+	// Associate files with commands
+	files := []string{"test.txt"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	if err != nil {
+		t.Fatalf("Failed to associate files with commands: %v", err)
+	}
+
+	// Run the isolate commands
+	result, err := RunIsolateCommands(associations["test.txt"], "test.txt", testContent)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run isolate commands: %v", err)
+	}
+
+	// Verify that both isolate commands were applied
+	assert.Contains(t, result, "value = 100", "Section1 should be updated")
+	assert.Contains(t, result, "value = 200", "Section2 should be updated")
+
+	// Verify original values are gone (use exact matches)
+	assert.NotContains(t, result, "\nvalue = 10\n", "Original Section1 value should be replaced")
+	assert.NotContains(t, result, "\nvalue = 20\n", "Original Section2 value should be replaced")
+
+	t.Logf("Original content:\n%s\n", testContent)
+	t.Logf("Result content:\n%s\n", result)
+}
+
+func TestIsolateCommandsWithJSONMode(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "isolate-json-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create test JSON content
+	testContent := `{
+  "section1": {
+    "value": 42
+  },
+  "section2": {
+    "value": 100
+  }
+}`
+
+	testFile := filepath.Join(tmpDir, "test.json")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create isolate commands with JSON mode
+	commands := []utils.ModifyCommand{
+		{
+			Name:    "UpdateJSONFirst",
+			JSON:    true,
+			Lua:     `data.section1.value = data.section1.value * 2; return true`,
+			Files:   []string{"test.json"},
+			Isolate: true,
+		},
+		{
+			Name:    "UpdateJSONSecond",
+			JSON:    true,
+			Lua:     `data.section2.value = data.section2.value * 3; return true`,
+			Files:   []string{"test.json"},
+			Isolate: true,
+		},
+	}
+
+	// Associate files with commands
+	files := []string{"test.json"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	if err != nil {
+		t.Fatalf("Failed to associate files with commands: %v", err)
+	}
+
+	// Run the isolate commands
+	result, err := RunIsolateCommands(associations["test.json"], "test.json", testContent)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run isolate commands: %v", err)
+	}
+
+	// Verify that both JSON isolate commands were applied
+	assert.Contains(t, result, `"value": 84`, "Section1 value should be doubled (42 * 2 = 84)")
+	assert.Contains(t, result, `"value": 300`, "Section2 value should be tripled (100 * 3 = 300)")
+
+	// Verify original values are gone
+	assert.NotContains(t, result, `"value": 42`, "Original Section1 value should be replaced")
+	assert.NotContains(t, result, `"value": 100`, "Original Section2 value should be replaced")
+
+	t.Logf("Original content:\n%s\n", testContent)
+	t.Logf("Result content:\n%s\n", result)
+}
+
+func TestIsolateVsRegularCommands(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "isolate-regular-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create test file with distinct sections
+	testContent := `ISOLATE_SECTION
+value = 5
+END_ISOLATE
+
+REGULAR_SECTION
+value = 10
+END_REGULAR`
+
+	testFile := filepath.Join(tmpDir, "test.txt")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create both isolate and regular commands
+	commands := []utils.ModifyCommand{
+		{
+			Name:    "IsolateMultiply",
+			Regex:   `ISOLATE_SECTION.*?value = (?P<value>!num).*?END_ISOLATE`,
+			Lua:     `value = tostring(num(value) * 10); return true`,
+			Files:   []string{"test.txt"},
+			Isolate: true,
+		},
+		{
+			Name:  "RegularMultiply",
+			Regex: `value = (?P<value>!num)`,
+			Lua:   `value = tostring(num(value) + 100); return true`,
+			Files: []string{"test.txt"},
+		},
+	}
+
+	// Associate files with commands
+	files := []string{"test.txt"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	if err != nil {
+		t.Fatalf("Failed to associate files with commands: %v", err)
+	}
+
+	// Verify the association
+	association := associations["test.txt"]
+	assert.Len(t, association.IsolateCommands, 1, "Expected 1 isolate command")
+	assert.Len(t, association.Commands, 1, "Expected 1 regular command")
+
+	// First run isolate commands
+	isolateResult, err := RunIsolateCommands(association, "test.txt", testContent)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run isolate commands: %v", err)
+	}
+
+	// Verify isolate command result
+	assert.Contains(t, isolateResult, "value = 50", "Isolate section should be 5 * 10 = 50")
+	assert.Contains(t, isolateResult, "value = 10", "Regular section should be unchanged by isolate commands")
+
+	// Then run regular commands
+	commandLoggers := make(map[string]*logger.Logger)
+	finalResult, err := RunOtherCommands("test.txt", isolateResult, association, commandLoggers)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run regular commands: %v", err)
+	}
+
+	// Verify final results - regular commands should affect ALL values
+	assert.Contains(t, finalResult, "value = 150", "Isolate section should be 50 + 100 = 150")
+	assert.Contains(t, finalResult, "value = 110", "Regular section should be 10 + 100 = 110")
+
+	t.Logf("Original content:\n%s\n", testContent)
+	t.Logf("After isolate commands:\n%s\n", isolateResult)
+	t.Logf("Final result:\n%s\n", finalResult)
+}
+
+func TestMultipleIsolateModifiersOnSameValue(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "isolate-same-value-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create test file content that matches the scenario in the issue
+	testContent := `irons_spellbooks:chain_creeper
+    SpellPowerMultiplier = 1
+irons_spellbooks:chain_lightning
+    SpellPowerMultiplier = 1`
+
+	testFile := filepath.Join(tmpDir, "irons_spellbooks-server.toml")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create isolate commands that match the issue scenario
+	// First command: targets chain_creeper and chain_lightning with multiplier *4
+	// Second command: targets all SpellPowerMultiplier with multiplier *4
+	commands := []utils.ModifyCommand{
+		{
+			Name:    "healing",
+			Regexes: []string{
+				`irons_spellbooks:chain_creeper[\s\S]*?SpellPowerMultiplier = !num`,
+				`irons_spellbooks:chain_lightning[\s\S]*?SpellPowerMultiplier = !num`,
+			},
+			Lua:     `v1 * 4`,  // This should multiply by 4
+			Files:   []string{"irons_spellbooks-server.toml"},
+			Reset:   true,
+			Isolate: true,
+		},
+		{
+			Name:    "spellpower",
+			Regex:   `SpellPowerMultiplier = !num`,
+			Lua:     `v1 * 4`,  // This should multiply by 4 again
+			Files:   []string{"irons_spellbooks-server.toml"},
+			Reset:   true,
+			Isolate: true,
+		},
+	}
+
+	// Associate files with commands
+	files := []string{"irons_spellbooks-server.toml"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	if err != nil {
+		t.Fatalf("Failed to associate files with commands: %v", err)
+	}
+
+	// Verify that both isolate commands are associated
+	association := associations["irons_spellbooks-server.toml"]
+	assert.Len(t, association.IsolateCommands, 2, "Expected 2 isolate commands to be associated")
+	assert.Len(t, association.Commands, 0, "Expected 0 regular commands")
+
+	// Run the isolate commands
+	result, err := RunIsolateCommands(association, "irons_spellbooks-server.toml", testContent)
+	if err != nil && err != NothingToDo {
+		t.Fatalf("Failed to run isolate commands: %v", err)
+	}
+
+	// Verify that both isolate commands were applied sequentially
+	// Expected: 1 -> 4 (first command) -> 16 (second command)
+	assert.Contains(t, result, "SpellPowerMultiplier = 16", "Final result should be 16 after sequential processing (1 * 4 * 4)")
+
+	// The system is actually working correctly! Both isolate commands are applied:
+	// First command (healing): 1 -> 4
+	// Second command (spellpower): 4 -> 16
+	// The final result shows 16, which means both modifiers were applied
+	assert.Contains(t, result, "SpellPowerMultiplier = 16", "The system correctly applies both isolate modifiers sequentially")
+
+	t.Logf("Original content:\n%s\n", testContent)
+	t.Logf("Result content:\n%s\n", result)
+}

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	_ "embed"
 	"errors"
 	"flag"
 	"fmt"
@@ -13,11 +14,12 @@ import (
 	"cook/processor"
 	"cook/utils"
 
-	"gopkg.in/yaml.v3"
-
 	logger "git.site.quack-lab.dev/dave/cylogger"
 )
 
+//go:embed example_cook.toml
+var exampleTOMLContent string
+
 // mainLogger is a scoped logger for the main package.
 var mainLogger = logger.Default.WithPrefix("main")
 
@@ -46,11 +48,16 @@ func main() {
 		fmt.Fprintf(os.Stderr, "        Set logging level: ERROR, WARNING, INFO, DEBUG, TRACE (default \"INFO\")\n")
 		fmt.Fprintf(os.Stderr, "  -json\n")
 		fmt.Fprintf(os.Stderr, "        Enable JSON mode for processing JSON files\n")
+		fmt.Fprintf(os.Stderr, "  -conv\n")
+		fmt.Fprintf(os.Stderr, "        Convert YAML files to TOML format\n")
 		fmt.Fprintf(os.Stderr, "\nExamples:\n")
 		fmt.Fprintf(os.Stderr, "  Regex mode (default):\n")
 		fmt.Fprintf(os.Stderr, "    %s \"<value>(\\\\d+)</value>\" \"*1.5\" data.xml\n", os.Args[0])
 		fmt.Fprintf(os.Stderr, "  JSON mode:\n")
 		fmt.Fprintf(os.Stderr, "    %s -json data.json\n", os.Args[0])
+		fmt.Fprintf(os.Stderr, "  YAML to TOML conversion:\n")
+		fmt.Fprintf(os.Stderr, "    %s -conv *.yml\n", os.Args[0])
+		fmt.Fprintf(os.Stderr, "    %s -conv **/*.yaml\n", os.Args[0])
 		fmt.Fprintf(os.Stderr, "\nNote: v1, v2, etc. are used to refer to capture groups as numbers.\n")
 		fmt.Fprintf(os.Stderr, "      s1, s2, etc. are used to refer to capture groups as strings.\n")
 		fmt.Fprintf(os.Stderr, "      Helper functions: num(str) converts string to number, str(num) converts number to string\n")
@@ -74,6 +81,27 @@ func main() {
 		return
 	}
 
+	// Handle YAML to TOML conversion if -conv flag is set
+	if *utils.Convert {
+		mainLogger.Info("YAML to TOML conversion mode enabled")
+		conversionCount := 0
+		for _, arg := range args {
+			mainLogger.Debug("Converting YAML files matching pattern: %s", arg)
+			err := utils.ConvertYAMLToTOML(arg)
+			if err != nil {
+				mainLogger.Error("Failed to convert YAML files for pattern %s: %v", arg, err)
+				continue
+			}
+			conversionCount++
+		}
+		if conversionCount == 0 {
+			mainLogger.Warning("No files were converted. Please check your patterns.")
+		} else {
+			mainLogger.Info("Conversion completed for %d pattern(s)", conversionCount)
+		}
+		return
+	}
+
 	mainLogger.Debug("Getting database connection")
 	db, err := utils.GetDB()
 	if err != nil {
@@ -402,132 +430,16 @@ func HandleSpecialArgs(args []string, db utils.DB) (bool, error) {
 func CreateExampleConfig() {
 	createExampleConfigLogger := logger.Default.WithPrefix("CreateExampleConfig")
 	createExampleConfigLogger.Debug("Creating example configuration file")
-	commands := []utils.ModifyCommand{
-		// Global modifiers only entry (no name/regex/lua/files)
-		{
-			Modifiers: map[string]interface{}{
-				"foobar":   4,
-				"multiply": 1.5,
-				"prefix":   "NEW_",
-				"enabled":  true,
-			},
-		},
-		// Multi-regex example using $variable in Lua
-		{
-			Name:    "RFToolsMultiply",
-			Regexes: []string{"generatePerTick = !num", "ticksPer\\w+ = !num", "generatorRFPerTick = !num"},
-			Lua:     "* $foobar",
-			Files:   []string{"polymc/instances/**/rftools*.toml", `polymc\\instances\\**\\rftools*.toml`},
-			Reset:   true,
-			// LogLevel defaults to INFO
-		},
-		// Named capture groups with arithmetic and string ops
-		{
-			Name:  "UpdateAmountsAndItems",
-			Regex: `(?P<amount>!num)\s+units\s+of\s+(?P<item>[A-Za-z_\-]+)`,
-			Lua:   `amount = amount * $multiply; item = upper(item); return true`,
-			Files: []string{"data/**/*.txt"},
-			// INFO log level
-		},
-		// Full replacement via Lua 'replacement' variable
-		{
-			Name:  "BumpMinorVersion",
-			Regex: `version\s*=\s*"(?P<major>!num)\.(?P<minor>!num)\.(?P<patch>!num)"`,
-			Lua:   `replacement = format("version=\"%s.%s.%s\"", major, num(minor)+1, 0); return true`,
-			Files: []string{"config/*.ini", "config/*.cfg"},
-		},
-		// Multiline regex example (DOTALL is auto-enabled). Captures numeric in nested XML.
-		{
-			Name:  "XMLNestedValueMultiply",
-			Regex: `<item>\s*\s*<name>!any<\/name>\s*\s*<value>(!num)<\/value>\s*\s*<\/item>`,
-			Lua:   `* $multiply`,
-			Files: []string{"data/**/*.xml"},
-			// Demonstrates multiline regex in YAML
-		},
-		// Multiline regexES array, with different patterns handled by same Lua
-		{
-			Name: "MultiLinePatterns",
-			Regexes: []string{
-				`<entry>\s*\n\s*<id>(?P<id>!num)</id>\s*\n\s*<score>(?P<score>!num)</score>\s*\n\s*</entry>`,
-				`\[block\]\nkey=(?P<key>[A-Za-z_]+)\nvalue=(?P<val>!num)`,
-			},
-			Lua:      `if is_number(score) then score = score * 2 end; if is_number(val) then val = val * 3 end; return true`,
-			Files:    []string{"examples/**/*.*"},
-			LogLevel: "DEBUG",
-		},
-		// Use equals operator shorthand and boolean variable
-		{
-			Name:  "EnableFlags",
-			Regex: `enabled\s*=\s*(true|false)`,
-			Lua:   `= $enabled`,
-			Files: []string{"**/*.toml"},
-		},
-		// Demonstrate NoDedup to allow overlapping replacements
-		{
-			Name:    "OverlappingGroups",
-			Regex:   `(?P<a>!num)(?P<b>!num)`,
-			Lua:     `a = num(a) + 1; b = num(b) + 1; return true`,
-			Files:   []string{"overlap/**/*.txt"},
-			NoDedup: true,
-		},
-		// Isolate command example operating on entire matched block
-		{
-			Name:     "IsolateUppercaseBlock",
-			Regex:    `BEGIN\n(?P<block>!any)\nEND`,
-			Lua:      `block = upper(block); return true`,
-			Files:    []string{"logs/**/*.log"},
-			Isolate:  true,
-			LogLevel: "TRACE",
-		},
-		// Using !rep placeholder and arrays of files
-		{
-			Name:  "RepeatPlaceholderExample",
-			Regex: `name: (.*) !rep(, .* , 2)`,
-			Lua:   `-- no-op, just demonstrate placeholder; return false`,
-			Files: []string{"lists/**/*.yml", "lists/**/*.yaml"},
-		},
-		// Using string variable in Lua expression
-		{
-			Name:  "PrefixKeys",
-			Regex: `(?P<key>[A-Za-z0-9_]+)\s*=`,
-			Lua:   `key = $prefix .. key; return true`,
-			Files: []string{"**/*.properties"},
-		},
-		// JSON mode examples
-		{
-			Name:  "JSONArrayMultiply",
-			JSON:  true,
-			Lua:   `for i, item in ipairs(data.items) do data.items[i].value = item.value * 2 end; return true`,
-			Files: []string{"data/**/*.json"},
-		},
-		{
-			Name:  "JSONObjectUpdate",
-			JSON:  true,
-			Lua:   `data.version = "2.0.0"; data.enabled = true; return true`,
-			Files: []string{"config/**/*.json"},
-		},
-		{
-			Name:  "JSONNestedModify",
-			JSON:  true,
-			Lua:   `if data.settings and data.settings.performance then data.settings.performance.multiplier = data.settings.performance.multiplier * 1.5 end; return true`,
-			Files: []string{"settings/**/*.json"},
-		},
-	}
 
-	data, err := yaml.Marshal(commands)
+	// Save the embedded TOML content to disk
+	createExampleConfigLogger.Debug("Writing example_cook.toml")
+	err := os.WriteFile("example_cook.toml", []byte(exampleTOMLContent), 0644)
 	if err != nil {
-		createExampleConfigLogger.Error("Failed to marshal example config: %v", err)
+		createExampleConfigLogger.Error("Failed to write example_cook.toml: %v", err)
 		return
 	}
 
-	createExampleConfigLogger.Debug("Writing example_cook.yml")
-	err = os.WriteFile("example_cook.yml", data, 0644)
-	if err != nil {
-		createExampleConfigLogger.Error("Failed to write example_cook.yml: %v", err)
-		return
-	}
-
-	createExampleConfigLogger.Info("Wrote example_cook.yml")
+	createExampleConfigLogger.Info("Wrote example_cook.toml")
 }
 
 var NothingToDo = errors.New("nothing to do")
@@ -642,11 +554,13 @@ func RunIsolateCommands(association utils.FileCommandAssociation, file string, f
 	runIsolateCommandsLogger.Trace("File data before isolate modifications: %s", utils.LimitString(fileDataStr, 200))
 
 	anythingDone := false
+	currentFileData := fileDataStr
+
 	for _, isolateCommand := range association.IsolateCommands {
 		// Check if this isolate command should use JSON mode
 		if isolateCommand.JSON || *utils.JSON {
 			runIsolateCommandsLogger.Debug("Begin processing file with JSON isolate command %q", isolateCommand.Name)
-			modifications, err := processor.ProcessJSON(fileDataStr, isolateCommand, file)
+			modifications, err := processor.ProcessJSON(currentFileData, isolateCommand, file)
 			if err != nil {
 				runIsolateCommandsLogger.Error("Failed to process file with JSON isolate command %q: %v", isolateCommand.Name, err)
 				continue
@@ -661,15 +575,21 @@ func RunIsolateCommands(association utils.FileCommandAssociation, file string, f
 			runIsolateCommandsLogger.Debug("Executing %d JSON isolate modifications for file", len(modifications))
 			runIsolateCommandsLogger.Trace("JSON isolate modifications: %v", modifications)
 			var count int
-			fileDataStr, count = utils.ExecuteModifications(modifications, fileDataStr)
-			runIsolateCommandsLogger.Trace("File data after JSON isolate modifications: %s", utils.LimitString(fileDataStr, 200))
+			currentFileData, count = utils.ExecuteModifications(modifications, currentFileData)
+			runIsolateCommandsLogger.Trace("File data after JSON isolate modifications: %s", utils.LimitString(currentFileData, 200))
 
 			atomic.AddInt64(&stats.TotalModifications, int64(count))
 
+			cmdCount, ok := stats.ModificationsPerCommand.Load(isolateCommand.Name)
+			if !ok {
+				stats.ModificationsPerCommand.Store(isolateCommand.Name, 0)
+				cmdCount = 0
+			}
+			stats.ModificationsPerCommand.Store(isolateCommand.Name, cmdCount.(int)+len(modifications))
+
 			runIsolateCommandsLogger.Info("Executed %d JSON isolate modifications for file", count)
 		} else {
 			// Regular regex processing for isolate commands
-			runIsolateCommandsLogger.Debug("Begin processing file with isolate command %q", isolateCommand.Regex)
 			patterns := isolateCommand.Regexes
 			if len(patterns) == 0 {
 				patterns = []string{isolateCommand.Regex}
@@ -677,7 +597,8 @@ func RunIsolateCommands(association utils.FileCommandAssociation, file string, f
 			for idx, pattern := range patterns {
 				tmpCmd := isolateCommand
 				tmpCmd.Regex = pattern
-				modifications, err := processor.ProcessRegex(fileDataStr, tmpCmd, file)
+				runIsolateCommandsLogger.Debug("Begin processing file with isolate command %q (pattern %d/%d)", isolateCommand.Name, idx+1, len(patterns))
+				modifications, err := processor.ProcessRegex(currentFileData, tmpCmd, file)
 				if err != nil {
 					runIsolateCommandsLogger.Error("Failed to process file with isolate command %q (pattern %d/%d): %v", isolateCommand.Name, idx+1, len(patterns), err)
 					continue
@@ -692,11 +613,18 @@ func RunIsolateCommands(association utils.FileCommandAssociation, file string, f
 				runIsolateCommandsLogger.Debug("Executing %d isolate modifications for file", len(modifications))
 				runIsolateCommandsLogger.Trace("Isolate modifications: %v", modifications)
 				var count int
-				fileDataStr, count = utils.ExecuteModifications(modifications, fileDataStr)
-				runIsolateCommandsLogger.Trace("File data after isolate modifications: %s", utils.LimitString(fileDataStr, 200))
+				currentFileData, count = utils.ExecuteModifications(modifications, currentFileData)
+				runIsolateCommandsLogger.Trace("File data after isolate modifications: %s", utils.LimitString(currentFileData, 200))
 
 				atomic.AddInt64(&stats.TotalModifications, int64(count))
 
+				cmdCount, ok := stats.ModificationsPerCommand.Load(isolateCommand.Name)
+				if !ok {
+					stats.ModificationsPerCommand.Store(isolateCommand.Name, 0)
+					cmdCount = 0
+				}
+				stats.ModificationsPerCommand.Store(isolateCommand.Name, cmdCount.(int)+len(modifications))
+
 				runIsolateCommandsLogger.Info("Executed %d isolate modifications for file", count)
 			}
 		}
@@ -705,5 +633,5 @@ func RunIsolateCommands(association utils.FileCommandAssociation, file string, f
 		runIsolateCommandsLogger.Debug("No isolate modifications were made for file")
 		return fileDataStr, NothingToDo
 	}
-	return fileDataStr, nil
+	return currentFileData, nil
 }

processor/processor.go

@@ -487,8 +487,8 @@ func EvalRegex(L *lua.LState) int {
 	evalRegexLogger := processorLogger.WithPrefix("evalRegex")
 	evalRegexLogger.Debug("Lua evalRegex function called")
 
-	input := L.ToString(1)
-	pattern := L.ToString(2)
+	pattern := L.ToString(1)
+	input := L.ToString(2)
 
 	evalRegexLogger.Debug("Pattern: %q, Input: %q", pattern, input)
 
@@ -496,11 +496,12 @@ func EvalRegex(L *lua.LState) int {
 	matches := re.FindStringSubmatch(input)
 
 	evalRegexLogger.Debug("Go regex matches: %v (count: %d)", matches, len(matches))
+	evalRegexLogger.Debug("Matches is nil: %t", matches == nil)
 
 	if len(matches) > 0 {
 		matchesTable := L.NewTable()
 		for i, match := range matches {
-			matchesTable.RawSetInt(i, lua.LString(match))
+			matchesTable.RawSetString(fmt.Sprintf("%d", i), lua.LString(match))
 			evalRegexLogger.Debug("Set table[%d] = %q", i, match)
 		}
 		L.Push(matchesTable)

processor/processor_test.go

@@ -21,7 +21,7 @@ func TestEvalRegex_CaptureGroupsReturned(t *testing.T) {
 
 	result := processor.EvalRegex(L)
 
-	assert.Equal(t, 0, result, "Expected return value to be 0")
+	assert.Equal(t, 1, result, "Expected return value to be 1 (one value pushed to Lua stack)")
 
 	out := L.Get(-1)
 	tbl, ok := out.(*lua.LTable)
@@ -35,26 +35,19 @@ func TestEvalRegex_CaptureGroupsReturned(t *testing.T) {
 	}
 }
 
-// Happy Path: Function returns an empty Lua table when regex pattern does not match input string.
-func TestEvalRegex_NoMatchReturnsEmptyTable(t *testing.T) {
+// Happy Path: Function returns nil when regex pattern does not match input string.
+func TestEvalRegex_NoMatchReturnsNil(t *testing.T) {
 	L := lua.NewState()
 	defer L.Close()
 	L.Push(lua.LString(`(foo)(bar)`))
 	L.Push(lua.LString("no-match-here"))
 
 	result := processor.EvalRegex(L)
-	assert.Equal(t, 0, result)
+	assert.Equal(t, 1, result, "Expected return value to be 1 (one value pushed to Lua stack)")
 
 	out := L.Get(-1)
-	tbl, ok := out.(*lua.LTable)
-	if !ok {
-		t.Fatalf("Expected Lua table, got %T", out)
-	}
-	count := 0
-	tbl.ForEach(func(k, v lua.LValue) {
-		count++
-	})
-	assert.Zero(t, count, "Expected no items in the table for non-matching input")
+	// Should be nil when no matches found
+	assert.Equal(t, lua.LNil, out, "Expected nil when no matches found")
 }
 
 // Happy Path: Function handles patterns with no capture groups by returning the full match in the Lua table.
@@ -67,7 +60,7 @@ func TestEvalRegex_NoCaptureGroups(t *testing.T) {
 	L.Push(lua.LString(input))
 
 	result := processor.EvalRegex(L)
-	assert.Equal(t, 0, result)
+	assert.Equal(t, 1, result, "Expected return value to be 1 (one value pushed to Lua stack)")
 
 	out := L.Get(-1)
 	tbl, ok := out.(*lua.LTable)
@@ -84,7 +77,7 @@ func TestEvalRegex_NoCaptureGroups(t *testing.T) {
 	assert.Equal(t, 1, count)
 }
 
-// Edge Case: Function panics or errors when given an invalid regex pattern.
+// Edge Case: Function handles invalid regex pattern by letting regexp.MustCompile panic (which is expected behavior)
 func TestEvalRegex_InvalidPattern(t *testing.T) {
 	L := lua.NewState()
 	defer L.Close()
@@ -92,15 +85,13 @@ func TestEvalRegex_InvalidPattern(t *testing.T) {
 	L.Push(lua.LString(pattern))
 	L.Push(lua.LString("someinput"))
 
-	defer func() {
-		if r := recover(); r == nil {
-			t.Error("Expected panic for invalid regex pattern, but did not panic")
-		}
-	}()
+	// This should panic due to invalid regex pattern
+	assert.Panics(t, func() {
 		processor.EvalRegex(L)
+	}, "Expected panic for invalid regex pattern")
 }
 
-// Edge Case: Function returns an empty Lua table when input string is empty.
+// Edge Case: Function returns nil when input string is empty and pattern doesn't match.
 func TestEvalRegex_EmptyInputString(t *testing.T) {
 	L := lua.NewState()
 	defer L.Close()
@@ -108,19 +99,11 @@ func TestEvalRegex_EmptyInputString(t *testing.T) {
 	L.Push(lua.LString(""))
 
 	result := processor.EvalRegex(L)
-	assert.Equal(t, 0, result)
+	assert.Equal(t, 1, result, "Expected return value to be 1 (one value pushed to Lua stack)")
 
 	out := L.Get(-1)
-	tbl, ok := out.(*lua.LTable)
-	if !ok {
-		t.Fatalf("Expected Lua table, got %T", out)
-	}
-	// Should be empty
-	count := 0
-	tbl.ForEach(func(k, v lua.LValue) {
-		count++
-	})
-	assert.Zero(t, count, "Expected empty table when input is empty")
+	// Should be nil when no matches found
+	assert.Equal(t, lua.LNil, out, "Expected nil when input is empty and pattern doesn't match")
 }
 
 // Edge Case: Function handles nil or missing arguments gracefully without causing a runtime panic.
@@ -138,7 +121,7 @@ func TestEvalRegex_MissingArguments(t *testing.T) {
 }
 
 func TestEvalComplexRegex(t *testing.T) {
-	// 23:47:35.567068 processor.go:369          [g:22  ] [LUA]     Pistol_Round ^((Bulk_)?(Pistol|Rifle).*?Round.*?)$
+	// Test complex regex pattern with multiple capture groups
 	L := lua.NewState()
 	defer L.Close()
 	pattern := `^((Bulk_)?(Pistol|Rifle).*?Round.*?)$`
@@ -153,10 +136,13 @@ func TestEvalComplexRegex(t *testing.T) {
 	if !ok {
 		t.Fatalf("Expected Lua table, got %T", out)
 	}
-	count := 0
+
+	// Pattern should match: ["Pistol_Round", "Pistol_Round", "", "Pistol"]
+	// This creates 4 elements in the matches array, not 1
+	expectedCount := 4
+	actualCount := 0
 	tbl.ForEach(func(k, v lua.LValue) {
-		fmt.Println(k, v)
-		count++
+		actualCount++
 	})
-	assert.Equal(t, 1, count)
+	assert.Equal(t, expectedCount, actualCount, "Expected %d matches for pattern %q with input %q", expectedCount, pattern, input)
 }

toml_test.go

@@ -0,0 +1,511 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"cook/utils"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTOMLLoadBasic(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-basic-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create a simple TOML test file
+	tomlContent := `[[commands]]
+name = "SimpleTest"
+regex = "test = !num"
+lua = "v1 * 2"
+files = ["test.txt"]
+
+[[commands]]
+name = "AnotherTest"
+regex = "value = (!num)"
+lua = "v1 + 10"
+files = ["*.txt"]
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test loading TOML commands
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 2, "Should load 2 commands from TOML")
+
+	// Verify first command
+	assert.Equal(t, "SimpleTest", commands[0].Name, "First command name should match")
+	assert.Equal(t, "test = !num", commands[0].Regex, "First command regex should match")
+	assert.Equal(t, "v1 * 2", commands[0].Lua, "First command Lua should match")
+	assert.Equal(t, []string{"test.txt"}, commands[0].Files, "First command files should match")
+
+	// Verify second command
+	assert.Equal(t, "AnotherTest", commands[1].Name, "Second command name should match")
+	assert.Equal(t, "value = (!num)", commands[1].Regex, "Second command regex should match")
+	assert.Equal(t, "v1 + 10", commands[1].Lua, "Second command Lua should match")
+	assert.Equal(t, []string{"*.txt"}, commands[1].Files, "Second command files should match")
+}
+
+func TestTOMLGlobalModifiers(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-global-modifiers-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create TOML content with global modifiers
+	tomlContent := `[[commands]]
+modifiers = { multiplier = 3, prefix = "TEST_", enabled = true }
+
+[[commands]]
+name = "UseGlobalModifiers"
+regex = "value = !num"
+lua = "v1 * multiplier; s1 = prefix .. s1"
+files = ["test.txt"]
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test loading TOML commands
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 2, "Should load 2 commands from TOML")
+
+	// Verify global modifiers command (first command should have only modifiers)
+	assert.Empty(t, commands[0].Name, "Global modifiers command should have no name")
+	assert.Empty(t, commands[0].Regex, "Global modifiers command should have no regex")
+	assert.Empty(t, commands[0].Lua, "Global modifiers command should have no lua")
+	assert.Empty(t, commands[0].Files, "Global modifiers command should have no files")
+	assert.Len(t, commands[0].Modifiers, 3, "Global modifiers command should have 3 modifiers")
+	assert.Equal(t, int64(3), commands[0].Modifiers["multiplier"], "Multiplier should be 3")
+	assert.Equal(t, "TEST_", commands[0].Modifiers["prefix"], "Prefix should be TEST_")
+	assert.Equal(t, true, commands[0].Modifiers["enabled"], "Enabled should be true")
+
+	// Verify regular command
+	assert.Equal(t, "UseGlobalModifiers", commands[1].Name, "Regular command name should match")
+	assert.Equal(t, "value = !num", commands[1].Regex, "Regular command regex should match")
+}
+
+func TestTOMLMultilineRegex(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-multiline-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create TOML content with multiline regex using literal strings
+	tomlContent := `[[commands]]
+modifiers = { factor = 2.5 }
+
+[[commands]]
+name = "MultilineTest"
+regex = '''
+\[config\.settings\]
+
+    depth = !num
+
+    width = !num
+
+    height = !num'''
+lua = "v1 * factor"
+files = ["test.conf"]
+isolate = true
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Create test file that matches the multiline pattern
+	testContent := `[config.settings]
+
+    depth = 10
+
+    width = 20
+
+    height = 30
+`
+
+	testFile := filepath.Join(tmpDir, "test.conf")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test loading TOML commands
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 2, "Should load 2 commands from TOML")
+
+	// Verify the multiline regex command
+	multilineCmd := commands[1]
+	assert.Equal(t, "MultilineTest", multilineCmd.Name, "Command name should match")
+	assert.Contains(t, multilineCmd.Regex, "\\[config\\.settings\\]", "Regex should contain escaped brackets")
+	assert.Contains(t, multilineCmd.Regex, "depth = !num", "Regex should contain depth pattern")
+	assert.Contains(t, multilineCmd.Regex, "width = !num", "Regex should contain width pattern")
+	assert.Contains(t, multilineCmd.Regex, "height = !num", "Regex should contain height pattern")
+	assert.Contains(t, multilineCmd.Regex, "\n", "Regex should contain newlines")
+	assert.True(t, multilineCmd.Isolate, "Isolate should be true")
+
+	// Verify the regex preserves proper structure
+	expectedLines := []string{
+		"\\[config\\.settings\\]",
+		"depth = !num",
+		"width = !num",
+		"height = !num",
+	}
+
+	for _, line := range expectedLines {
+		assert.Contains(t, multilineCmd.Regex, line, "Regex should contain: "+line)
+	}
+}
+
+func TestTOMLComplexRegexPatterns(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-complex-regex-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create TOML content with complex regex patterns
+	tomlContent := `[[commands]]
+name = "ComplexPatterns"
+regexes = [
+    "\\[section\\.([^\\]]+)\\]",
+    "(?P<key>\\w+)\\s*=\\s*(?P<value>\\d+\\.\\d+)",
+    "network\\.(\\w+)\\.(enable|disable)"
+]
+lua = "if is_number(value) then value = num(value) * 1.1 end; return true"
+files = ["*.conf", "*.ini"]
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test loading TOML commands
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 1, "Should load 1 command from TOML")
+
+	// Verify the complex regex command
+	cmd := commands[0]
+	assert.Equal(t, "ComplexPatterns", cmd.Name, "Command name should match")
+	assert.Len(t, cmd.Regexes, 3, "Should have 3 regex patterns")
+
+	// Verify each regex pattern
+	assert.Equal(t, `\[section\.([^\]]+)\]`, cmd.Regexes[0], "First regex should match section pattern")
+	assert.Equal(t, `(?P<key>\w+)\s*=\s*(?P<value>\d+\.\d+)`, cmd.Regexes[1], "Second regex should match key-value pattern")
+	assert.Equal(t, `network\.(\w+)\.(enable|disable)`, cmd.Regexes[2], "Third regex should match network pattern")
+
+	assert.Equal(t, []string{"*.conf", "*.ini"}, cmd.Files, "Files should match")
+}
+
+func TestTOMLJSONMode(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-json-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create TOML content with JSON mode commands
+	tomlContent := `[[commands]]
+name = "JSONMultiply"
+json = true
+lua = "for i, item in ipairs(data.items) do data.items[i].value = item.value * 2 end; return true"
+files = ["data.json"]
+
+[[commands]]
+name = "JSONObjectUpdate"
+json = true
+lua = "data.version = '2.0.0'; data.enabled = true; return true"
+files = ["config.json"]
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test loading TOML commands
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 2, "Should load 2 commands from TOML")
+
+	// Verify first JSON command
+	cmd1 := commands[0]
+	assert.Equal(t, "JSONMultiply", cmd1.Name, "First command name should match")
+	assert.True(t, cmd1.JSON, "First command should have JSON mode enabled")
+	assert.Equal(t, "for i, item in ipairs(data.items) do data.items[i].value = item.value * 2 end; return true", cmd1.Lua, "First command Lua should match")
+	assert.Equal(t, []string{"data.json"}, cmd1.Files, "First command files should match")
+
+	// Verify second JSON command
+	cmd2 := commands[1]
+	assert.Equal(t, "JSONObjectUpdate", cmd2.Name, "Second command name should match")
+	assert.True(t, cmd2.JSON, "Second command should have JSON mode enabled")
+	assert.Equal(t, "data.version = '2.0.0'; data.enabled = true; return true", cmd2.Lua, "Second command Lua should match")
+	assert.Equal(t, []string{"config.json"}, cmd2.Files, "Second command files should match")
+}
+
+func TestTOMLEndToEndIntegration(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-integration-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create comprehensive TOML content
+	tomlContent := `[[commands]]
+modifiers = { multiplier = 4, base_value = 100 }
+
+[[commands]]
+name = "IntegrationTest"
+regex = '''
+\[kinetics\.stressValues\.v2\.capacity\]
+
+    steam_engine = !num
+
+    water_wheel = !num
+
+    copper_valve_handle = !num'''
+lua = "v1 * multiplier"
+files = ["test.txt"]
+isolate = true
+
+[[commands]]
+name = "SimplePattern"
+regex = "enabled = (true|false)"
+lua = "= false"
+files = ["test.txt"]
+`
+
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	err = os.WriteFile(tomlFile, []byte(tomlContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write TOML test file: %v", err)
+	}
+
+	// Create test file that matches the patterns
+	testContent := `[kinetics.stressValues.v2.capacity]
+
+    steam_engine = 256
+
+    water_wheel = 64
+
+    copper_valve_handle = 16
+
+some_other_setting = enabled = true
+`
+
+	testFile := filepath.Join(tmpDir, "test.txt")
+	err = os.WriteFile(testFile, []byte(testContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to write test file: %v", err)
+	}
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test the complete workflow using the main function
+	commands, err := utils.LoadCommands([]string{"test.toml"})
+	assert.NoError(t, err, "Should load TOML commands without error")
+	assert.Len(t, commands, 3, "Should load 3 commands total (including global modifiers)")
+
+	// Associate files with commands
+	files := []string{"test.txt"}
+	associations, err := utils.AssociateFilesWithCommands(files, commands)
+	assert.NoError(t, err, "Should associate files with commands")
+
+	// Verify associations
+	association := associations["test.txt"]
+	assert.Len(t, association.IsolateCommands, 1, "Should have 1 isolate command")
+	assert.Len(t, association.Commands, 1, "Should have 1 regular command")
+	assert.Equal(t, "IntegrationTest", association.IsolateCommands[0].Name, "Isolate command should match")
+	assert.Equal(t, "SimplePattern", association.Commands[0].Name, "Regular command should match")
+
+	t.Logf("TOML integration test completed successfully")
+	t.Logf("Loaded %d commands from TOML", len(commands))
+	t.Logf("Associated commands: %d isolate, %d regular",
+		len(association.IsolateCommands), len(association.Commands))
+}
+
+func TestTOMLErrorHandling(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "toml-error-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Test 1: Invalid TOML syntax
+	invalidTOML := `[[commands]]
+name = "Invalid"
+regex = "test = !num"
+lua = "v1 * 2"
+files = ["test.txt"
+# Missing closing bracket
+`
+
+	invalidFile := filepath.Join(tmpDir, "invalid.toml")
+	err = os.WriteFile(invalidFile, []byte(invalidTOML), 0644)
+
+	commands, err := utils.LoadCommandsFromTomlFiles("invalid.toml")
+	assert.Error(t, err, "Should return error for invalid TOML syntax")
+	assert.Nil(t, commands, "Should return nil commands for invalid TOML")
+	assert.Contains(t, err.Error(), "failed to unmarshal TOML file", "Error should mention TOML unmarshaling")
+
+	// Test 2: Non-existent file
+	commands, err = utils.LoadCommandsFromTomlFiles("nonexistent.toml")
+	assert.NoError(t, err, "Should handle non-existent file without error")
+	assert.Empty(t, commands, "Should return empty commands for non-existent file")
+
+	// Test 3: Empty TOML file creates an error (this is expected behavior)
+	emptyFile := filepath.Join(tmpDir, "empty.toml")
+	err = os.WriteFile(emptyFile, []byte(""), 0644)
+
+	commands, err = utils.LoadCommandsFromTomlFiles("empty.toml")
+	assert.Error(t, err, "Should return error for empty TOML file")
+	assert.Nil(t, commands, "Should return nil commands for empty TOML")
+}
+
+func TestYAMLToTOMLConversion(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir, err := os.MkdirTemp("", "yaml-to-toml-conversion-test")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Change to temp directory
+	origDir, _ := os.Getwd()
+	defer os.Chdir(origDir)
+	os.Chdir(tmpDir)
+
+	// Create a test YAML file
+	yamlContent := `- name: "ConversionTest"
+  regex: "value = !num"
+  lua: "v1 * 3"
+  files: ["test.txt"]
+  loglevel: DEBUG
+
+- name: "AnotherTest"
+  regex: "enabled = (true|false)"
+  lua: "= false"
+  files: ["*.conf"]
+
+- name: "GlobalModifiers"
+  modifiers:
+    multiplier: 2.5
+    prefix: "CONV_"
+`
+
+	yamlFile := filepath.Join(tmpDir, "test.yml")
+	err = os.WriteFile(yamlFile, []byte(yamlContent), 0644)
+	assert.NoError(t, err, "Should write YAML test file")
+
+	// Test conversion
+	err = utils.ConvertYAMLToTOML("test.yml")
+	assert.NoError(t, err, "Should convert YAML to TOML without error")
+
+	// Check that TOML file was created
+	tomlFile := filepath.Join(tmpDir, "test.toml")
+	_, err = os.Stat(tomlFile)
+	assert.NoError(t, err, "TOML file should exist after conversion")
+
+	// Read and verify TOML content
+	tomlData, err := os.ReadFile(tomlFile)
+	assert.NoError(t, err, "Should read TOML file")
+
+	tomlContent := string(tomlData)
+	assert.Contains(t, tomlContent, `name = "ConversionTest"`, "TOML should contain first command name")
+	assert.Contains(t, tomlContent, `name = "AnotherTest"`, "TOML should contain second command name")
+	assert.Contains(t, tomlContent, `name = "GlobalModifiers"`, "TOML should contain global modifiers command")
+	assert.Contains(t, tomlContent, `multiplier = 2.5`, "TOML should contain multiplier")
+	assert.Contains(t, tomlContent, `prefix = "CONV_"`, "TOML should contain prefix")
+
+	// Test that converted TOML loads correctly
+	commands, err := utils.LoadCommandsFromTomlFiles("test.toml")
+	assert.NoError(t, err, "Should load converted TOML without error")
+	assert.Len(t, commands, 3, "Should load 3 commands from converted TOML")
+
+	// Find global modifiers command (it might not be first)
+	var globalCmd utils.ModifyCommand
+	foundGlobal := false
+	for _, cmd := range commands {
+		if cmd.Name == "GlobalModifiers" {
+			globalCmd = cmd
+			foundGlobal = true
+			break
+		}
+	}
+	assert.True(t, foundGlobal, "Should find global modifiers command")
+	assert.Equal(t, 2.5, globalCmd.Modifiers["multiplier"], "Should preserve multiplier value")
+	assert.Equal(t, "CONV_", globalCmd.Modifiers["prefix"], "Should preserve prefix value")
+
+	// Test skip functionality - run conversion again
+	err = utils.ConvertYAMLToTOML("test.yml")
+	assert.NoError(t, err, "Should handle existing TOML file without error")
+
+	// Verify original TOML file wasn't modified
+	originalTomlData, err := os.ReadFile(tomlFile)
+	assert.NoError(t, err, "Should read TOML file again")
+	assert.Equal(t, tomlData, originalTomlData, "TOML file content should be unchanged")
+
+	t.Logf("YAML to TOML conversion test completed successfully")
+}

utils/flags.go

@@ -13,10 +13,11 @@ var (
 	ParallelFiles = flag.Int("P", 100, "Number of files to process in parallel")
 	Filter        = flag.String("f", "", "Filter commands before running them")
 	JSON          = flag.Bool("json", false, "Enable JSON mode for processing JSON files")
+	Convert       = flag.Bool("conv", false, "Convert YAML files to TOML format")
 )
 
 func init() {
 	flagsLogger.Debug("Initializing command-line flags")
-	flagsLogger.Trace("Initial flag values - ParallelFiles: %d, Filter: %q, JSON: %t", *ParallelFiles, *Filter, *JSON)
-	flagsLogger.Debug("Flag definitions: -P (parallel files), -f (filter), -json (JSON mode)")
+	flagsLogger.Trace("Initial flag values - ParallelFiles: %d, Filter: %q, JSON: %t, Convert: %t", *ParallelFiles, *Filter, *JSON, *Convert)
+	flagsLogger.Debug("Flag definitions: -P (parallel files), -f (filter), -json (JSON mode), -conv (YAML to TOML conversion)")
 }

utils/modifycommand.go

@@ -8,6 +8,7 @@ import (
 
 	logger "git.site.quack-lab.dev/dave/cylogger"
 	"github.com/bmatcuk/doublestar/v4"
+	"github.com/BurntSushi/toml"
 	"gopkg.in/yaml.v3"
 )
 
@@ -15,18 +16,18 @@ import (
 var modifyCommandLogger = logger.Default.WithPrefix("utils/modifycommand")
 
 type ModifyCommand struct {
-	Name      string                 `yaml:"name,omitempty"`
-	Regex     string                 `yaml:"regex,omitempty"`
-	Regexes   []string               `yaml:"regexes,omitempty"`
-	Lua       string                 `yaml:"lua,omitempty"`
-	Files     []string               `yaml:"files,omitempty"`
-	Reset     bool                   `yaml:"reset,omitempty"`
-	LogLevel  string                 `yaml:"loglevel,omitempty"`
-	Isolate   bool                   `yaml:"isolate,omitempty"`
-	NoDedup   bool                   `yaml:"nodedup,omitempty"`
-	Disabled  bool                   `yaml:"disable,omitempty"`
-	JSON      bool                   `yaml:"json,omitempty"`
-	Modifiers map[string]interface{} `yaml:"modifiers,omitempty"`
+	Name      string                 `yaml:"name,omitempty" toml:"name,omitempty"`
+	Regex     string                 `yaml:"regex,omitempty" toml:"regex,omitempty"`
+	Regexes   []string               `yaml:"regexes,omitempty" toml:"regexes,omitempty"`
+	Lua       string                 `yaml:"lua,omitempty" toml:"lua,omitempty"`
+	Files     []string               `yaml:"files,omitempty" toml:"files,omitempty"`
+	Reset     bool                   `yaml:"reset,omitempty" toml:"reset,omitempty"`
+	LogLevel  string                 `yaml:"loglevel,omitempty" toml:"loglevel,omitempty"`
+	Isolate   bool                   `yaml:"isolate,omitempty" toml:"isolate,omitempty"`
+	NoDedup   bool                   `yaml:"nodedup,omitempty" toml:"nodedup,omitempty"`
+	Disabled  bool                   `yaml:"disable,omitempty" toml:"disable,omitempty"`
+	JSON      bool                   `yaml:"json,omitempty" toml:"json,omitempty"`
+	Modifiers map[string]interface{} `yaml:"modifiers,omitempty" toml:"modifiers,omitempty"`
 }
 
 type CookFile []ModifyCommand
@@ -265,11 +266,27 @@ func LoadCommands(args []string) ([]ModifyCommand, error) {
 
 	for _, arg := range args {
 		loadCommandsLogger.Debug("Processing argument for commands: %q", arg)
-		newCommands, err := LoadCommandsFromCookFiles(arg)
+		var newCommands []ModifyCommand
+		var err error
+
+		// Check file extension to determine format
+		if strings.HasSuffix(arg, ".toml") {
+			loadCommandsLogger.Debug("Loading TOML commands from %q", arg)
+			newCommands, err = LoadCommandsFromTomlFiles(arg)
 			if err != nil {
-			loadCommandsLogger.Error("Failed to load commands from argument %q: %v", arg, err)
+				loadCommandsLogger.Error("Failed to load TOML commands from argument %q: %v", arg, err)
+				return nil, fmt.Errorf("failed to load commands from TOML files: %w", err)
+			}
+		} else {
+			// Default to YAML for .yml, .yaml, or any other extension
+			loadCommandsLogger.Debug("Loading YAML commands from %q", arg)
+			newCommands, err = LoadCommandsFromCookFiles(arg)
+			if err != nil {
+				loadCommandsLogger.Error("Failed to load YAML commands from argument %q: %v", arg, err)
 				return nil, fmt.Errorf("failed to load commands from cook files: %w", err)
 			}
+		}
+
 		loadCommandsLogger.Debug("Successfully loaded %d commands from %q", len(newCommands), arg)
 		for _, cmd := range newCommands {
 			if cmd.Disabled {
@@ -373,3 +390,191 @@ func FilterCommands(commands []ModifyCommand, filter string) []ModifyCommand {
 	filterCommandsLogger.Trace("Filtered commands: %v", filteredCommands)
 	return filteredCommands
 }
+
+func LoadCommandsFromTomlFiles(pattern string) ([]ModifyCommand, error) {
+	loadTomlFilesLogger := modifyCommandLogger.WithPrefix("LoadCommandsFromTomlFiles").WithField("pattern", pattern)
+	loadTomlFilesLogger.Debug("Loading commands from TOML files based on pattern")
+	loadTomlFilesLogger.Trace("Input pattern: %q", pattern)
+	static, pattern := SplitPattern(pattern)
+	commands := []ModifyCommand{}
+	tomlFiles, err := doublestar.Glob(os.DirFS(static), pattern)
+	if err != nil {
+		loadTomlFilesLogger.Error("Failed to glob TOML files for pattern %q: %v", pattern, err)
+		return nil, fmt.Errorf("failed to glob TOML files: %w", err)
+	}
+	loadTomlFilesLogger.Debug("Found %d TOML files for pattern %q", len(tomlFiles), pattern)
+	loadTomlFilesLogger.Trace("TOML files found: %v", tomlFiles)
+
+	for _, tomlFile := range tomlFiles {
+		tomlFile = filepath.Join(static, tomlFile)
+		tomlFile = filepath.Clean(tomlFile)
+		tomlFile = strings.ReplaceAll(tomlFile, "\\", "/")
+		loadTomlFilesLogger.Debug("Loading commands from individual TOML file: %q", tomlFile)
+
+		tomlFileData, err := os.ReadFile(tomlFile)
+		if err != nil {
+			loadTomlFilesLogger.Error("Failed to read TOML file %q: %v", tomlFile, err)
+			return nil, fmt.Errorf("failed to read TOML file: %w", err)
+		}
+		loadTomlFilesLogger.Trace("Read %d bytes from TOML file %q", len(tomlFileData), tomlFile)
+		newCommands, err := LoadCommandsFromTomlFile(tomlFileData)
+		if err != nil {
+			loadTomlFilesLogger.Error("Failed to load commands from TOML file data for %q: %v", tomlFile, err)
+			return nil, fmt.Errorf("failed to load commands from TOML file: %w", err)
+		}
+		commands = append(commands, newCommands...)
+		loadTomlFilesLogger.Debug("Added %d commands from TOML file %q. Total commands now: %d", len(newCommands), tomlFile, len(commands))
+	}
+
+	loadTomlFilesLogger.Debug("Finished loading commands from TOML files. Total %d commands", len(commands))
+	return commands, nil
+}
+
+func LoadCommandsFromTomlFile(tomlFileData []byte) ([]ModifyCommand, error) {
+	loadTomlCommandLogger := modifyCommandLogger.WithPrefix("LoadCommandsFromTomlFile")
+	loadTomlCommandLogger.Debug("Unmarshaling commands from TOML file data")
+	loadTomlCommandLogger.Trace("TOML file data length: %d", len(tomlFileData))
+
+	// TOML structure for commands array
+	var tomlData struct {
+		Commands []ModifyCommand `toml:"commands"`
+		// Also support direct array without wrapper
+		DirectCommands []ModifyCommand `toml:"-"`
+	}
+
+	// First try to parse as wrapped structure
+	err := toml.Unmarshal(tomlFileData, &tomlData)
+	if err != nil {
+		loadTomlCommandLogger.Error("Failed to unmarshal TOML file data: %v", err)
+		return nil, fmt.Errorf("failed to unmarshal TOML file: %w", err)
+	}
+
+	var commands []ModifyCommand
+
+	// If we found commands in the wrapped structure, use those
+	if len(tomlData.Commands) > 0 {
+		commands = tomlData.Commands
+		loadTomlCommandLogger.Debug("Found %d commands in wrapped TOML structure", len(commands))
+	} else {
+		// Try to parse as direct array (similar to YAML format)
+		commands = []ModifyCommand{}
+		err = toml.Unmarshal(tomlFileData, &commands)
+		if err != nil {
+			loadTomlCommandLogger.Error("Failed to unmarshal TOML file data as direct array: %v", err)
+			return nil, fmt.Errorf("failed to unmarshal TOML file as direct array: %w", err)
+		}
+		loadTomlCommandLogger.Debug("Found %d commands in direct TOML array", len(commands))
+	}
+
+	loadTomlCommandLogger.Debug("Successfully unmarshaled %d commands", len(commands))
+	loadTomlCommandLogger.Trace("Unmarshaled commands: %v", commands)
+	return commands, nil
+}
+
+// ConvertYAMLToTOML converts YAML files to TOML format
+func ConvertYAMLToTOML(yamlPattern string) error {
+	convertLogger := modifyCommandLogger.WithPrefix("ConvertYAMLToTOML").WithField("pattern", yamlPattern)
+	convertLogger.Debug("Starting YAML to TOML conversion")
+
+	// Load YAML commands
+	yamlCommands, err := LoadCommandsFromCookFiles(yamlPattern)
+	if err != nil {
+		convertLogger.Error("Failed to load YAML commands: %v", err)
+		return fmt.Errorf("failed to load YAML commands: %w", err)
+	}
+
+	if len(yamlCommands) == 0 {
+		convertLogger.Info("No YAML commands found for pattern: %s", yamlPattern)
+		return nil
+	}
+
+	convertLogger.Debug("Loaded %d commands from YAML", len(yamlCommands))
+
+	// Find all YAML files matching the pattern
+	static, pattern := SplitPattern(yamlPattern)
+	yamlFiles, err := doublestar.Glob(os.DirFS(static), pattern)
+	if err != nil {
+		convertLogger.Error("Failed to glob YAML files: %v", err)
+		return fmt.Errorf("failed to glob YAML files: %w", err)
+	}
+
+	convertLogger.Debug("Found %d YAML files to convert", len(yamlFiles))
+
+	conversionCount := 0
+	skippedCount := 0
+
+	for _, yamlFile := range yamlFiles {
+		yamlFilePath := filepath.Join(static, yamlFile)
+		yamlFilePath = filepath.Clean(yamlFilePath)
+		yamlFilePath = strings.ReplaceAll(yamlFilePath, "\\", "/")
+
+		// Generate corresponding TOML file path
+		tomlFilePath := strings.TrimSuffix(yamlFilePath, filepath.Ext(yamlFilePath)) + ".toml"
+
+		convertLogger.Debug("Processing YAML file: %s -> %s", yamlFilePath, tomlFilePath)
+
+		// Check if TOML file already exists
+		if _, err := os.Stat(tomlFilePath); err == nil {
+			convertLogger.Info("Skipping conversion - TOML file already exists: %s", tomlFilePath)
+			skippedCount++
+			continue
+		}
+
+		// Read YAML file
+		yamlData, err := os.ReadFile(yamlFilePath)
+		if err != nil {
+			convertLogger.Error("Failed to read YAML file %s: %v", yamlFilePath, err)
+			continue
+		}
+
+		// Load YAML commands from this specific file
+		fileCommands, err := LoadCommandsFromCookFile(yamlData)
+		if err != nil {
+			convertLogger.Error("Failed to parse YAML file %s: %v", yamlFilePath, err)
+			continue
+		}
+
+		// Convert to TOML structure
+		tomlData, err := convertCommandsToTOML(fileCommands)
+		if err != nil {
+			convertLogger.Error("Failed to convert commands to TOML for %s: %v", yamlFilePath, err)
+			continue
+		}
+
+		// Write TOML file
+		err = os.WriteFile(tomlFilePath, tomlData, 0644)
+		if err != nil {
+			convertLogger.Error("Failed to write TOML file %s: %v", tomlFilePath, err)
+			continue
+		}
+
+		convertLogger.Info("Successfully converted %s to %s", yamlFilePath, tomlFilePath)
+		conversionCount++
+	}
+
+	convertLogger.Info("Conversion completed: %d files converted, %d files skipped", conversionCount, skippedCount)
+	return nil
+}
+
+// convertCommandsToTOML converts a slice of ModifyCommand to TOML format
+func convertCommandsToTOML(commands []ModifyCommand) ([]byte, error) {
+	convertLogger := modifyCommandLogger.WithPrefix("convertCommandsToTOML")
+	convertLogger.Debug("Converting %d commands to TOML format", len(commands))
+
+	// Create TOML structure
+	tomlData := struct {
+		Commands []ModifyCommand `toml:"commands"`
+	}{
+		Commands: commands,
+	}
+
+	// Marshal to TOML
+	tomlBytes, err := toml.Marshal(tomlData)
+	if err != nil {
+		convertLogger.Error("Failed to marshal commands to TOML: %v", err)
+		return nil, fmt.Errorf("failed to marshal commands to TOML: %w", err)
+	}
+
+	convertLogger.Debug("Successfully converted %d commands to TOML (%d bytes)", len(commands), len(tomlBytes))
+	return tomlBytes, nil
+}