POSIX sh EBNF语法 [英] POSIX sh EBNF grammar

问题描述

是否存在现有的POSIX sh语法，或者我必须直接从规范中找出答案?

Is there an existing POSIX sh grammar available or do I have to figure it out from the specification directly?

请注意，我对 pure sh不太感兴趣；就我的目的而言，扩展但顺应性的sh也是很好的.

Note I'm not so much interested in a pure sh; an extended but conformant sh is also more than fine for my purposes.

推荐答案

我做了更多的挖掘工作，并发现了以下资源:

I have done some more digging and found these resources:

1. 位于包含Bash 2.0的BNF语法的Bash书籍(摘自此处)和相关附录

   A Bash book containing Bash 2.0's BNF grammar (gone from here) with the relevant appendix still here

   我已经浏览了bash，pdksh和posh的来源，但是在我需要的抽象级别上并没有发现任何远程信息.

   I have looked through the sources of bash, pdksh, and posh but haven't found anything remotely at the level of abstraction I need.

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