diff --git a/file_iter.go b/file_iter.go
deleted file mode 100644
index bf3124d..0000000
--- a/file_iter.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package main
-
-import (
-	"os"
-	"path/filepath"
-)
-
-func getGitignores(sourceDir string) ([]string, error) {
-	return filepath.Glob(filepath.Join(sourceDir, "*.gitignore"))
-}
-
-func readFile(path string) string {
-	res, err := os.ReadFile(path)
-	handleErr(err)
-	return string(res)
-}
diff --git a/gi_gen.go b/gi_gen.go
index 9a158c4..ac09323 100644
--- a/gi_gen.go
+++ b/gi_gen.go
@@ -1,72 +1,83 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"os"
 	"path/filepath"
-	"runtime"
 	"strings"
-	// "github.com/tcnksm/go-input"
-)
 
-// UNUSED allows unused variables to be included in Go programs
-func UNUSED(x ...interface{}) {}
+	"github.com/AlecAivazis/survey/v2"
+	"golang.org/x/exp/maps"
+)
 
 // create line cache map for skipping previously checked glob lines
 var lineCache = make(map[string]bool)
 
 func main() {
-	var callerSkip = 0 // might need to be 1 in release mode?
-	_, filename, _, _ := runtime.Caller(callerSkip)
-	binDir := filepath.Dir(filename)
-	sourceDir := filepath.Join(binDir, ".github.gitignore")
-	wd, _ := os.Getwd()
+	allFiles, err := prepareGitignores()
 
-	log.Println(binDir)
-
-	if !fileExists(sourceDir) {
-		log.Println("Getting gitignore files...")
-		runCmd("git", "clone", "--depth=1", repoUrl, sourceDir)
-	}
-
-	if getNeedsUpdate() {
-		log.Println("Updating gitignore files...")
-		runCmd("git", "pull", "origin", "master")
-	}
-
-	allFiles, err := getGitignores(sourceDir)
 	handleErr(err)
 
-	keep := []string{}
+	files := make(map[string]string)
+	fileNames := []string{}
 
-	log.Println("Found:")
-	for _, v := range allFiles {
-		log.Println("Parsing file: " + v)
-		contents := readFile(v)
-		lines := strings.Split(contents, "\n")
-		for _, line := range lines {
-			trimmed := strings.TrimSpace(line)
-			_, exists := lineCache[trimmed]
-			if exists {
-				continue
-			}
-			lineCache[trimmed] = true
-			if len(trimmed) == 0 || strings.ToLower(string(trimmed[0])) == "#" {
-				lineCache[trimmed] = false
-				continue
-			}
-			log.Println("Parsing line: " + line)
-			if globExists(filepath.Join(wd, line)) {
-				keep = append(keep, line)
-			}
+	for _, filename := range allFiles {
+		contents := readFile(filename)
+		basename := filepath.Base(filename)
+		langName := basename[:strings.Index(basename, ".")]
+
+		if findFileMatches(contents) {
+			sep := "#========================================================================\n"
+			header := fmt.Sprintf(sep+"# %s\n"+sep+"\n", basename)
+			files[langName] = header + contents
+			fileNames = append(fileNames, langName)
 		}
 	}
 
-	log.Println("Done")
+	log.Println("Done.")
 
-	log.Println("Final output:")
-	for _, v := range keep {
-		log.Println(v)
+	selected := []string{}
+	keys := maps.Keys(files)
+
+	if len(keys) > 1 {
+		prompt := &survey.MultiSelect{
+			Message: "Found matches in your project for the following gitignore files.\nPlease select which you want to write to .gitignore:",
+			Options: fileNames,
+		}
+
+		var inp []string
+		survey.AskOne(prompt, &inp)
+
+		for _, sel := range inp {
+			selected = append(selected, files[sel])
+		}
+	} else {
+		selected = keys
 	}
 
+	wd, _ := os.Getwd()
+	out := filepath.Join(wd, ".gitignore")
+
+	if fileExists(out) {
+		prompt2 := &survey.Select{
+			Message: ".gitignore file found in this directory. Please pick an option:",
+			Options: []string{"Overwrite", "Append", "Skip"},
+		}
+		var inp2 string
+		survey.AskOne(prompt2, &inp2)
+		switch inp2 {
+		case "Overwrite":
+			log.Printf("Writing to %s", out)
+			writeFile(out, strings.Join(selected, "\n"), true)
+			break
+		case "Append":
+			log.Printf("Appending to %s", out)
+			writeFile(out, strings.Join(selected, "\n"), false)
+			break
+		}
+	} else {
+		log.Printf("Writing to %s", out)
+		writeFile(out, strings.Join(selected, "\n"), true)
+	}
 }
diff --git a/go.mod b/go.mod
index e477a8b..a6fb626 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,17 @@ go 1.18
 require github.com/tcnksm/go-input v0.0.0-20180404061846-548a7d7a8ee8
 
 require (
-	golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122 // indirect
-	golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect
-	golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/mattn/go-colorable v0.1.2 // indirect
+	github.com/mattn/go-isatty v0.0.8 // indirect
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	golang.org/x/text v0.3.6 // indirect
+)
+
+require (
+	github.com/AlecAivazis/survey/v2 v2.3.4
+	golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122 // indirect
+	golang.org/x/exp v0.0.0-20220516143420-24438e51023a
+	golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 // indirect
+	golang.org/x/term v0.0.0-20210503060354-a79de5458b56 // indirect
 )
diff --git a/go.sum b/go.sum
index 14eb5de..e5aa706 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,40 @@
+github.com/AlecAivazis/survey/v2 v2.3.4 h1:pchTU9rsLUSvWEl2Aq9Pv3k0IE2fkqtGxazskAMd9Ng=
+github.com/AlecAivazis/survey/v2 v2.3.4/go.mod h1:hrV6Y/kQCLhIZXGcriDCUBtB3wnN7156gMXJ3+b23xM=
+github.com/Netflix/go-expect v0.0.0-20220104043353-73e0943537d2/go.mod h1:HBCaDeC1lPdgDeDbhX8XFpy1jqjK0IBG8W5K+xYqA0w=
+github.com/creack/pty v1.1.17/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/hinshun/vt10x v0.0.0-20220119200601-820417d04eec/go.mod h1:Q48J4R4DvxnHolD5P8pOtXigYlRuPLGl6moFx3ulM68=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
+github.com/mattn/go-colorable v0.1.2 h1:/bC9yWikZXAL9uJdulbSfyVNIR3n3trXl+v8+1sx8mU=
+github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
+github.com/mattn/go-isatty v0.0.8 h1:HLtExJ+uU2HOZ+wI0Tt5DtUDrx8yhUqDcp7fYERX4CE=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b h1:j7+1HpAFS1zy5+Q4qx1fWh90gTKwiN4QCGoY9TWyyO4=
+github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/tcnksm/go-input v0.0.0-20180404061846-548a7d7a8ee8 h1:RB0v+/pc8oMzPsN97aZYEwNuJ6ouRJ2uhjxemJ9zvrY=
 github.com/tcnksm/go-input v0.0.0-20180404061846-548a7d7a8ee8/go.mod h1:IlWNj9v/13q7xFbaK4mbyzMNwrZLaWSHx/aibKIZuIg=
 golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122 h1:NvGWuYG8dkDHFSKksI1P9faiVJ9rayE6l0+ouWVIDs8=
 golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/exp v0.0.0-20220516143420-24438e51023a h1:tiLLxEjKNE6Hrah/Dp/cyHvsyjDLcMFSocOHO5XDmOM=
+golang.org/x/exp v0.0.0-20220516143420-24438e51023a/go.mod h1:lgLbSvA5ygNOMpwM/9anMpWVlVJ7Z+cHWq/eFuinpGE=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 h1:id054HUawV2/6IGm2IV8KZQjqtwAOo2CYlOToYqa0d0=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210503060354-a79de5458b56 h1:b8jxX3zqjpqb2LklXPzKSGJhzyxCOZSz8ncv8Nv+y7w=
+golang.org/x/term v0.0.0-20210503060354-a79de5458b56/go.mod h1:tfny5GFUkzUvx4ps4ajbZsCe5lw1metzhBm9T3x7oIY=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/ignore_files.go b/ignore_files.go
new file mode 100644
index 0000000..7a293b7
--- /dev/null
+++ b/ignore_files.go
@@ -0,0 +1,102 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func prepareGitignores() ([]string, error) {
+	var callerSkip = 0 // might need to be 1 in release mode?
+	_, filename, _, _ := runtime.Caller(callerSkip)
+	binDir := filepath.Dir(filename)
+	gitignoresDir := filepath.Join(binDir, ".github.gitignore")
+
+	if !fileExists(gitignoresDir) {
+		log.Println("Getting gitignore files...")
+		runCmd("git", "clone", "--depth=1", repoUrl, gitignoresDir)
+	}
+
+	if getNeedsUpdate() {
+		log.Println("Updating gitignore files...")
+		runCmd("git", "pull", "origin", "master")
+	}
+
+	return getGitignores(gitignoresDir)
+}
+
+func getGitignores(sourceDir string) ([]string, error) {
+	return filepath.Glob(filepath.Join(sourceDir, "*.gitignore"))
+}
+
+var ignoreLines = []string{
+	"/*",
+	".",
+	".vscode",
+	".vscode/*",
+	".idea",
+	".idea/*",
+}
+
+func findFileMatches(patterns string) bool {
+	lines := strings.Split(patterns, "\n")
+	wd, _ := os.Getwd()
+
+	for _, line := range lines {
+		// ignore empty lines / comments
+		line = strings.TrimSpace(line)
+
+		if len(line) == 0 || strings.ToLower(line)[0] == '#' {
+			continue
+		}
+		idx := strings.Index(line, "#")
+		// ignore comments at end of line
+		if idx > -1 && (idx == 0 || line[idx-1] != '\\') {
+			line = strings.TrimSpace(line[0:idx])
+		}
+		if len(line) == 0 || contains(ignoreLines, line) {
+			continue
+		}
+		if globExists(filepath.Join(wd, line)) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func removeUnusedPatterns(filename string, keep []string) []string {
+	wd, _ := os.Getwd()
+	contents := readFile(filename)
+	lines := strings.Split(contents, "\n")
+	keepCopy := []string{}
+	copy(keep, keepCopy)
+	found := false
+
+	for _, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		_, exists := lineCache[trimmed]
+		if exists {
+			continue
+		}
+		lineCache[trimmed] = true
+		if len(trimmed) == 0 || strings.ToLower(string(trimmed[0])) == "#" {
+			lineCache[trimmed] = false
+			continue
+		}
+
+		if globExists(filepath.Join(wd, line)) {
+			found = true
+			keepCopy = append(keepCopy, line)
+		}
+	}
+
+	if found {
+		keepCopy = insert(keepCopy, 0, fmt.Sprintf("\n# %s", filepath.Base(filename)))
+	}
+
+	return keep
+}
diff --git a/utils.go b/utils.go
index 2480ab0..48c4890 100644
--- a/utils.go
+++ b/utils.go
@@ -1,23 +1,26 @@
 package main
 
 import (
+	"io/fs"
 	"log"
 	"os"
 	"os/exec"
 	"path/filepath"
 )
 
+// UNUSED allows unused variables to be included in Go programs
+func UNUSED(x ...interface{}) {}
+
 var repoUrl = "https://github.com/github/gitignore"
 
 func fileExists(path string) bool {
 	_, err := os.Stat(path)
-	exists := os.IsExist(err)
+	exists := !os.IsNotExist(err)
 	return exists
 }
 
 func globExists(path string) bool {
 	res, err := filepath.Glob(path)
-	// log.Println("globExists? " + path)
 	handleErr(err)
 	return res != nil
 }
@@ -44,9 +47,49 @@ func runCmd(cmd string, args ...string) (string, error) {
 	return string(res), err
 }
 
+func readFile(path string) string {
+	res, err := os.ReadFile(path)
+	handleErr(err)
+	return string(res)
+}
+
+func writeFile(path string, data string, overwrite bool) bool {
+	var err error
+	if overwrite {
+		// os.Create(path)
+		err = os.WriteFile(path, []byte(data), fs.ModeAppend)
+	} else {
+		f, _ := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+		defer f.Close()
+		_, err = f.WriteString("\n" + data)
+	}
+	handleErr(err)
+	return true
+}
+
 func handleErr(err error) {
 	if err != nil {
 		log.Fatal(err)
 		os.Exit(1)
 	}
 }
+
+func insert[T any](a []T, i int, item T) []T {
+	return append(a[:i], append([]T{item}, a[i:]...)...)
+}
+
+func contains[T comparable](list []T, item T) bool {
+	for _, v := range list {
+		if v == item {
+			return true
+		}
+	}
+	return false
+}
+
+func ternary[T any](cond bool, whenTrue T, whenFalse T) T {
+	if cond {
+		return whenTrue
+	}
+	return whenFalse
+}