Allow escaping linked translations

slang/README.md

@@ -709,6 +709,18 @@ If namespaces are used, then it has to be specified in the path too.
 
 [RichTexts](#-richtext) can also contain links! But only [RichTexts](#-richtext) can link to [RichTexts](#-richtext).
 
+Optionally, you can escape linked translations with this syntax: 
+
+
+```json
+{
+  "fields": {
+    "nbsp": "\u00a0"
+  },
+  "message": "10@:{fields.nbsp}Days"
+}
+```
+
 ### ➤ Pluralization
 
 This library uses the concept defined [here](https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html).

slang/lib/builder/model/node.dart

@@ -576,7 +576,7 @@ _ParseLinksResult _parseLinks({
 }) {
   final links = <String>{};
   final parsedContent = input.replaceAllMapped(RegexUtils.linkedRegex, (match) {
-    final linkedPath = match.group(1)!;
+    final linkedPath = (match.group(1) ?? match.group(2))!;
     links.add(linkedPath);
 
     if (linkParamMap == null) {

slang/lib/src/builder/utils/regex_utils.dart

@@ -4,8 +4,12 @@ class RegexUtils {
   /// 2 = argument of ${argument}
   static RegExp argumentsDartRegex = RegExp(r'(?<!\\)\$(?:([\w]+)|\{(.+?)\})');
 
-  /// matches @:translation.key
-  static RegExp linkedRegex = RegExp(r'@:(\w[\w|.]*\w|\w)');
+  /// matches @:translation.key or @:{translation.key}, but not \@:translation.key
+  /// 1 = argument of @:translation.key
+  /// 2 = argument of @:{translation.key}
+  static RegExp linkedRegex = RegExp(
+    r'(?<!\\)@:(?:(\w[\w|.]*\w|\w)|\{(\w[\w|.]*\w|\w)\})',
+  );
 
   /// matches $hello, $ but not \$
   static RegExp dollarRegex = RegExp(r'([^\\]|^)\$');

slang/test/unit/model/node_test.dart

@@ -271,6 +271,14 @@ void main() {
         expect(node.params, <String>{});
       });
 
+      test('with escaped links', () {
+        final test = r'@:.c@:{a}@:{hi}@:wow. @:{nice.cool} @:nice.cool';
+        final node = textNode(test, StringInterpolation.dart);
+        expect(node.content,
+            r'@:.c${_root.a}${_root.hi}${_root.wow}. ${_root.nice.cool} ${_root.nice.cool}');
+        expect(node.params, <String>{});
+      });
+
       test('with links and params', () {
         final test = r'@:a @:b';
         final node = textNode(test, StringInterpolation.dart, linkParamMap: {