add executable completion on windows

complete.go

@@ -134,7 +134,7 @@ func matchWord(s string, words []string) (matches []string, longest string) {
 func matchExec(s string) (matches []string, longest string) {
 	var words []string
 
-	paths := strings.Split(envPath, ":")
+	paths := strings.Split(envPath, string(filepath.ListSeparator))
 
 	for _, p := range paths {
 		if _, err := os.Stat(p); os.IsNotExist(err) {
@@ -157,10 +157,11 @@ func matchExec(s string) (matches []string, longest string) {
 				continue
 			}
 
-			if !f.Mode().IsRegular() || f.Mode()&0111 == 0 {
+			if !f.Mode().IsRegular() || !isExecutable(f) {
 				continue
 			}
 
+			log.Print(f.Name())
 			words = append(words, f.Name())
 		}
 	}

os.go

@@ -129,3 +129,7 @@ func setDefaults() {
 func moveCursor(y, x int) {
 	fmt.Printf("\033[%d;%dH", y, x)
 }
+
+func isExecutable(f os.FileInfo) bool {
+	return f.Mode()&0111 != 0
+}

os_windows.go

@@ -16,6 +16,10 @@ var (
 	envShell  = os.Getenv("SHELL")
 )
 
+var (
+	envPathExt = os.Getenv("PATHEXT")
+)
+
 var (
 	gDefaultShell      = "cmd"
 	gDefaultSocketProt = "tcp"
@@ -109,3 +113,14 @@ func moveCursor(y, x int) {
 	// TODO: implement
 	return
 }
+
+func isExecutable(f os.FileInfo) bool {
+	exts := strings.Split(envPathExt, string(filepath.ListSeparator))
+	for _, e := range exts {
+		if strings.HasSuffix(strings.ToLower(f.Name()), strings.ToLower(e)) {
+			log.Print(f.Name(), e)
+			return true
+		}
+	}
+	return false
+}