fix single char types

struct.v

@@ -62,7 +62,11 @@ fn (mut app App) type_decl(spec TypeSpec) {
 	// Remember the type name for the upcoming const (enum) handler if it's an enum
 	name := spec.name.name
 	// V requires type aliases to start with a capital letter
-	v_name := name.capitalize()
+	mut v_name := name.capitalize()
+	// If only 1 char in name, double it
+	if v_name.len == 1 {
+		v_name += v_name
+	}
 	// Store alias info
 	app.struct_or_alias << name
 	app.struct_or_alias << v_name

tests/single_char_type/single_char_type.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+)
+
+type T string
+
+func pickT(x []T) T {
+	return x[rand.Intn(len(x))]
+}
+
+func main() {
+	var list = []T{"bleen", "fuligin", "garrow", "grue", "hooloovoo"}
+	fmt.Println(pickT(list))
+}

tests/single_char_type/single_char_type.vv

@@ -0,0 +1,14 @@
+module main
+
+import rand
+
+type TT = string
+
+fn pick_t(x []TT) TT {
+	return x[rand.intn(x.len)]
+}
+
+fn main() {
+	mut list := ['bleen', 'fuligin', 'garrow', 'grue', 'hooloovoo']
+	println(pick_t(list))
+}