format
Formats a parse error into a user-friendly error message with context.
The formatted message includes:
Error line and column number
Expected parsers (if named parsers are available)
Actual character found (or EOF)
The source line where the error occurred (truncated to maxLineLength if needed)
A caret (^) indicating the error position
Return
A formatted error message with context
Parameters
exception
The parse exception to format
max
Maximum length for the source line display (default 80)