The system is implemented in ANSI C, according with POSIX specification.

系统的实现利用标准C开发, 基本符合POSIX规范,平台相关代码在源代码中用编译选项隔开.

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Q . Why does using parenthesis in a POSIX regular expression change the result a match?

POSIX正则表达式中使用括号为什么会改变匹配结果?

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Q . Why does using parenthesis in a POSIX regular expression change the result of a match?

在POSIX正则表达式中使用括号为什么会改变匹配结果?

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Most POSIX systems, such like Linux, provide a faster but non - reentrant implementation of synchronization primitives.

多数POSIX系统, 例如Linux, 提供了更快但是不可重入的同步原语.

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