array: rename default to init

vlib/v/fmt/fmt.v

@@ -979,7 +979,7 @@ fn (mut f Fmt) array_init(it ast.ArrayInit) {
 				f.expr(it.cap_expr)
 			}
 			if it.has_default {
-				f.write('default: ')
+				f.write('init: ')
 				f.expr(it.default_expr)
 			}
 			f.write('}')
@@ -1003,7 +1003,7 @@ fn (mut f Fmt) array_init(it ast.ArrayInit) {
 			}
 		}
 		if it.has_default {
-			f.write('default: ')
+			f.write('init: ')
 			f.expr(it.default_expr)
 		}
 		f.write('}')

vlib/v/fmt/tests/array_newlines_keep.vv

@@ -9,6 +9,6 @@ fn main() {
 		make_flag('darwin', '-framework', 'Cocoa'),
 		make_flag('windows', '-l', 'gdi32')
 	]
-	x := []int{len: 10, cap: 100, default: 1}
+	x := []int{len: 10, cap: 100, init: 1}
 	_ := expected_flags
 }

vlib/v/parser/containers.v

@@ -91,12 +91,12 @@ fn (mut p Parser) array_init() ast.ArrayInit {
 					has_cap = true
 					cap_expr = p.expr(0)
 				}
-				'default' {
+				'init' {
 					has_default = true
 					default_expr = p.expr(0)
 				}
 				else {
-					p.error('wrong field `$key`, expecting `len`, `cap`, or `default`')
+					p.error('wrong field `$key`, expecting `len`, `cap`, or `init`')
 				}
 			}
 			if p.tok.kind != .rcbr {