Support nano syntax for open at line

Ref #887

cmd/micro/micro.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+	"strings"
 	"time"
 
 	"github.com/go-errors/errors"
@@ -95,6 +96,16 @@ func LoadInput() []*Buffer {
 		// Option 1
 		// We go through each file and load it
 		for i := 0; i < len(args); i++ {
+			if strings.HasPrefix(args[i], "+") {
+				if strings.Contains(args[i], ":") {
+					split := strings.Split(args[i], ":")
+					*flagStartPos = split[0][1:] + "," + split[1]
+				} else {
+					*flagStartPos = args[i][1:] + ",0"
+				}
+				continue
+			}
+
 			buf, err := NewBufferFromFile(args[i])
 			if err != nil {
 				TermMessage(err)
@@ -275,7 +286,9 @@ func main() {
 		fmt.Println("-config-dir dir")
 		fmt.Println("    \tSpecify a custom location for the configuration directory")
 		fmt.Println("-startpos LINE,COL")
+		fmt.Println("+LINE:COL")
 		fmt.Println("    \tSpecify a line and column to start the cursor at when opening a buffer")
+		fmt.Println("    \tThis can also be done by opening file:LINE:COL")
 		fmt.Println("-options")
 		fmt.Println("    \tShow all option help")
 		fmt.Println("-version")