Duckling doesn't seem to recognize Arabic numbers especially in date formats, such as:
١/١/٢٠١٨
贡献者指南
技术栈
无
领域
backenddata
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。
3
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。
half day
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。
mostly clear
前置要求
basic Haskell knowledgefamiliarity with Duckling codebase
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。
30
研究方向
Investigate how Duckling currently handles numeric digits in date patterns. Look for the numeral recognition module (likely in Haskell source files under `Duckling/Numeral`). The issue requires adding support for Arabic Indic digits (٠ ٩) in addition to the existing ASCII digits. Check if there is a function that maps digit characters to numbers; if not, extend it. The change is localized to the numeral recognition logic.
