Can't parse YAML that includes some emojis

[matthew-carroll]

It seems that some set of emojis can't be parsed by this package.

yaml v3.1.2

Repro:

import 'package:yaml/yaml.dart' as yaml;

void main(List<String> args) async {
  _showYamlPackageBug();
}

void _showYamlPackageBug() {
  final data = yaml.loadYaml(_yaml);

  print("YAML:");
  print(data);
}

const _yaml = "title: 🤠 My Title ";

Error:

Unhandled exception:
Error on line 1, column 8: Unexpected character.
  ╷
1 │ title: 🤠 My Title 
  │        ^
  ╵
#0      Parser.parse (package:yaml/src/parser.dart:64:7)
#1      Loader._loadMapping (package:yaml/src/loader.dart:169:37)
#2      Loader._loadNode (package:yaml/src/loader.dart:92:16)
#3      Loader._loadDocument (package:yaml/src/loader.dart:68:20)
#4      Loader.load (package:yaml/src/loader.dart:60:20)
#5      loadYamlDocument (package:yaml/yaml.dart:72:25)
#6      loadYamlNode (package:yaml/yaml.dart:57:5)
#7      loadYaml (package:yaml/yaml.dart:44:5)
#8      _showYamlPackageBug (file:///home/user/frontmatter-emoji/bin/server.dart:21:21)
#9      main (file:///home/user/frontmatter-emoji/bin/server.dart:7:3)
#10     _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:294:33)
#11     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:189:12)

[Siddhant-K-code]

You can use 3.1.3-wip, which fixes a related issue.

---

As a workaround until 3.1.3 is released, you can wrap the emoji value in quotes:

title: "🤠 My Title"

Which would something like following:

import 'package:yaml/yaml.dart' as yaml;

void main(List<String> args) async {
  _showYamlPackageBug();
}

void _showYamlPackageBug() {
  final data = yaml.loadYaml('title: "🤠 My Title"');
  print("YAML:");
  print(data);
}