project upgrade tool: better space handling in "export"

the regex had two problems; they were not recognizing export statements
that had spaces after "export", or export statements with no space
before "var".

These are both valid syntax, but the conversion was unsuccessful.
This commit fixes both cases.

test case 1:    `export(int)var x = 1`
old conversion: `@export(int)var x = 1`
new conversion: `@export var x: int = 1`

test case 2:    `export (int) var y = 2`
old conversion: `@export (int) var y = 2`
new conversion: `@export var y: int = 2`

1 files changed, 5 insertions, 4 deletions

diff --git a/editor/project_converter_3_to_4.cpp b/editor/project_converter_3_to_4.cpp
index bea865af13..46d9a02e94 100644
--- a/editor/project_converter_3_to_4.cpp
+++ b/editor/project_converter_3_to_4.cpp
@@ -68,10 +68,10 @@ public:
 	RegEx reg_json_parse = RegEx("([\t ]{0,})([^\n]+)parse_json\\(([^\n]+)");
 	RegEx reg_json_non_new = RegEx("([\t ]{0,})([^\n]+)JSON\\.parse\\(([^\n]+)");
 	RegEx reg_json_print = RegEx("\\bJSON\\b\\.print\\(");
-	RegEx reg_export_simple = RegEx("export\\(([a-zA-Z0-9_]+)\\)[ ]+var[ ]+([a-zA-Z0-9_]+)");
-	RegEx reg_export_typed = RegEx("export\\(([a-zA-Z0-9_]+)\\)[ ]+var[ ]+([a-zA-Z0-9_]+)[ ]*:[ ]*[a-zA-Z0-9_]+");
-	RegEx reg_export_inferred_type = RegEx("export\\([a-zA-Z0-9_]+\\)[ ]+var[ ]+([a-zA-Z0-9_]+)[ ]*:[ ]*=");
-	RegEx reg_export_advanced = RegEx("export\\(([^)^\n]+)\\)[ ]+var[ ]+([a-zA-Z0-9_]+)([^\n]+)");
+	RegEx reg_export_simple = RegEx("export[ ]*\\(([a-zA-Z0-9_]+)\\)[ ]*var[ ]+([a-zA-Z0-9_]+)");
+	RegEx reg_export_typed = RegEx("export[ ]*\\(([a-zA-Z0-9_]+)\\)[ ]*var[ ]+([a-zA-Z0-9_]+)[ ]*:[ ]*[a-zA-Z0-9_]+");
+	RegEx reg_export_inferred_type = RegEx("export[ ]*\\([a-zA-Z0-9_]+\\)[ ]*var[ ]+([a-zA-Z0-9_]+)[ ]*:[ ]*=");
+	RegEx reg_export_advanced = RegEx("export[ ]*\\(([^)^\n]+)\\)[ ]*var[ ]+([a-zA-Z0-9_]+)([^\n]+)");
 	RegEx reg_setget_setget = RegEx("var[ ]+([a-zA-Z0-9_]+)([^\n]+?)[ \t]*setget[ \t]+([a-zA-Z0-9_]+)[ \t]*,[ \t]*([a-zA-Z0-9_]+)");
 	RegEx reg_setget_set = RegEx("var[ ]+([a-zA-Z0-9_]+)([^\n]+?)[ \t]*setget[ \t]+([a-zA-Z0-9_]+)[ \t]*[,]*[^\n]*$");
 	RegEx reg_setget_get = RegEx("var[ ]+([a-zA-Z0-9_]+)([^\n]+?)[ \t]*setget[ \t]+,[ \t]*([a-zA-Z0-9_]+)[ \t]*$");
@@ -931,6 +931,7 @@ bool ProjectConverter3To4::test_conversion(RegExContainer &reg_container) {
 	valid = valid && test_conversion_gdscript_builtin(" Transform.xform_inv(Vector3(a,b,c) + Vector3.UP) ", " (Vector3(a,b,c) + Vector3.UP) * Transform ", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
 
 	valid = valid && test_conversion_gdscript_builtin("export(float) var lifetime = 3.0", "export var lifetime: float = 3.0", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
+	valid = valid && test_conversion_gdscript_builtin("export (int)var spaces=1", "export var spaces: int=1", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
 	valid = valid && test_conversion_gdscript_builtin("export(String, 'AnonymousPro', 'CourierPrime') var _font_name = 'AnonymousPro'", "export var _font_name = 'AnonymousPro' # (String, 'AnonymousPro', 'CourierPrime')", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false); // TODO, this is only a workaround
 	valid = valid && test_conversion_gdscript_builtin("export(PackedScene) var mob_scene", "export var mob_scene: PackedScene", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
 	valid = valid && test_conversion_gdscript_builtin("export(float) var lifetime: float = 3.0", "export var lifetime: float = 3.0", &ProjectConverter3To4::rename_gdscript_functions, "custom rename", reg_container, false);