fmt: handle indents

vlib/v/fmt/fmt.v

@@ -529,7 +529,11 @@ fn (f mut Fmt) expr(node ast.Expr) {
 				f.write('_')
 			} else {
 				name := short_module(it.name)
+				//f.write('<$it.name => $name>')
 				f.write(name)
+				if name.contains('.') {
+					f.mark_module_as_used(name)
+				}
 			}
 		}
 		ast.InfixExpr {
@@ -669,6 +673,7 @@ fn (f mut Fmt) expr(node ast.Expr) {
 		}
 		ast.StructInit {
 			type_sym := f.table.get_type_symbol(it.typ)
+			//f.write('<old name: $type_sym.name>')
 			mut name := short_module(type_sym.name).replace(f.cur_mod + '.', '')			// TODO f.type_to_str?
 			if name == 'void' {
 				name = ''

vlib/v/fmt/tests/import_multiple_expected.vv

@@ -3,5 +3,10 @@ import (
 	os
 )
 
+const (
+	mypi = math.pi
+)
+
 fn main() {
+	println(os.path_separator)
 }

vlib/v/fmt/tests/import_multiple_input.vv

@@ -1,5 +1,10 @@
 import math
 import os
 
+const (
+	mypi = math.pi
+)
+
 fn main() {
+	println(os.path_separator)
 }

vlib/v/fmt/tests/import_multiple_with_alias_expected.vv

@@ -1,8 +1,13 @@
 import (
-	math as m
 	os
-	math.complex as c
+	math
 )
 
 fn main() {
+	// println(m.pi)
+	println(os.path_separator)
+	println(math.pi)
+	// math as m
+	// import math.complex as c
+	// num := c.Complex{} TODO
 }

vlib/v/fmt/tests/import_multiple_with_alias_input.vv

@@ -1,6 +1,11 @@
-import math as m
 import os
-import math.complex as c
+import math
 
 fn main() {
+	// println(m.pi)
+	println(os.path_separator)
+	println(math.pi)
+	// math as m
+	// import math.complex as c
+	// num := c.Complex{} TODO
 }