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Re: What is wrong with a regex?

From: Koichi Murase
Subject: Re: What is wrong with a regex?
Date: Sat, 4 Feb 2023 15:15:58 +0900

2023年2月4日(土) 15:10 Jeffrey Walton <>:
> You might also try the test on Linux after setting the POSIXLY_CORRECT
> environmental variable. It may make GNU gear more conformant. I think
> you can also start bash with --posix option.
> Also see 

Thanks for the suggestion. I now tried the posix mode and export
POSIXLY_CORRECT=y in GNU/Linux (w/ glibc), Cygwin (w/ newlib), but
they didn't change the behavior. They still seem to support the empty


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