Perhaps it should be opt-in, but most usage would expect a BOM is ignored.
贡献者指南
技术栈
python
领域
backend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
under 1 hour
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
PythonLark basicsByte Order Mark concept
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
Investigate the Lark lexer (lark/lexer.py) to understand where input text is processed. The issue suggests adding an option to skip BOM, likely by checking the first bytes of the input and ignoring them if they are a BOM. Look for existing tests in the test suite related to encoding or whitespace handling. The maintainer may have indicated a preference for opt in behavior in the comments.
Skip BOM (Byte order mark) · lark-parser/lark#407 | Good First Issue
