FormatException: Range out of order in character class

[Alexander-TM]

Flutter throwing this exception:

The following FormatException was thrown building EasyRichText(dirty):
Range out of order in character class((?<!\w)qu'y a-t-il? [ou qu'est-ce qu'il y a?] ― il y a que j'ai faim!(?!\w))

[2000calories]

Please show your flutter doctor output.

[Alexander-TM]

I'm using VS Code and testing on android device.

[✓] Flutter (Channel stable, 3.3.10, on Mac OS X 10.15.7 19H2026 darwin-x64, locale en-CA)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[!] Xcode - develop for iOS and macOS (Xcode 12.4)
✗ Flutter requires Xcode 13 or higher.
Download the latest version or update via the Mac App Store.
! CocoaPods 1.10.1 out of date (1.11.0 is recommended).
CocoaPods is used to retrieve the iOS and macOS platform side's plugin code that responds to your plugin usage on the Dart side.
Without CocoaPods, plugins will not work on iOS or macOS.
For more info, see https://flutter.dev/platform-plugins
To upgrade see https://guides.cocoapods.org/using/getting-started.html#installation for instructions.
[✓] Chrome - develop for the web
[✓] Android Studio (version 4.1)
[✓] IntelliJ IDEA Community Edition (version 2022.1.2)
[✓] VS Code (version 1.74.2)
[✓] Connected device (3 available)
[✓] HTTP Host Availability

[2000calories]

I do not see any error after upgrading to 3.3.10. Please show your widget code.

[Alexander-TM]

The code:

Flexible(
              child: EasyRichText(
                trans.source + ": " + trans.targetObj.text!,
                patternList: [
                  EasyRichTextPattern(
                      targetString: trans.source,
                      style: const TextStyle(
                        fontStyle: FontStyle.italic, fontSize: 15,
                        // color: Colors.grey.shade700
                      )),
                  EasyRichTextPattern(
                      targetString: trans.targetObj.text,
                      style: TextStyle(
                          fontWeight: FontWeight.bold,
                          fontSize: 15,
                          // backgroundColor: globals.genderColors[trans.targetObj.gender]
                          color: globals.genderColors[trans.targetObj.gender]))
                ],
              ),
            ),

===============================================================

It works perfectly until it stumbles upon this following text in french and english, is there a character that's causing this exception? is it the bracket ']' character in the middle of part1? I think the bracket confuses the widget into processing it as part of a regex? does it make sense?

==================================================================

Part 1: "qu'y a-t-il? ou qu'est-ce qu'il y a?] ― il y a que j'ai faim!",
Part 2: "what's the matter? ― I'm hungry, that's what!"

[2000calories]

EasyRichTextPattern(
  targetString: trans.source,
  //set hasSpecialCharacters
  hasSpecialCharacters: true,
  style: const TextStyle(
    fontStyle: FontStyle.italic, fontSize: 15,
    // color: Colors.grey.shade700
)),

[Alexander-TM]

It worked thank you