Portable new line converter

build.sh

@@ -75,8 +75,7 @@ zipDist() {
 	rm -rf "$name"
 	mkdir -p "$name"
 	for f in "${distFiles[@]}" ; do
-		sed 's/$/
+		GOARCH="" GOOS="" go run cmd/todos/main.go < "$f" > "$name/$f.txt"
-/' < "$f" > "$name/$f.txt"
 	done
 	cp syncthing.exe "$name"
 	sign "$name/syncthing.exe"

cmd/todos/main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+func main() {
+	buf := make([]byte, 4096)
+	var err error
+	for err == nil {
+		n, err := io.ReadFull(os.Stdin, buf)
+		if n > 0 {
+			buf = buf[:n]
+			repl := bytes.Replace(buf, []byte("\n"), []byte("\r\n"), -1)
+			_, err = os.Stdout.Write(repl)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+		}
+		if err == io.EOF {
+			return
+		}
+		buf = buf[:cap(buf)]
+	}
+	fmt.Println(err)
+	os.Exit(1)
+}