[Internal Error] Unhandled error message (code 50, message: syntax error: mismatched character '<EOF>' expecting ''' Please file a bug report at https://github.com/mike-lischke/vscode-antlr4/issues)

[rabbittrix]

[Internal Error] Unhandled error message (code 50, message: syntax error: mismatched character '' expecting ''' Please file a bug report at https://github.com/mike-lischke/vscode-antlr4/issues)

from vscode-antlr4.

[mike-lischke]

Keep in mind that character ranges don't need quotes. So it should be:

FIELD_CONTENT: (~[{}[\]] | '{{' ~[{] ~[}]*)+;

[rabbittrix]

You're right, thank you very much for your help, it worked perfectly.

[rabbittrix]

Can you help me on this:
COMPUTABLE_VARIABLE: '[' ~[[]]* ']';
BUSINESS_RULE: '[' ~[[]]* ']';

The problem is that the escape sequence [ is not valid in ANTLR. To fix this, you need to replace [ and ] with [ and ] respectively.

[rabbittrix]

fix COMPUTABLE_VARIABLE : '[' ~[[]]* ']' ; // error in this line
BUSINESS_RULE : '[' ~[[]]* ']'; // error in this line

[mike-lischke]

For general question please use Stackoverflow (www.stackoverflow.com).