no regular expressions in less

Takashi Yano
Wed Jul 21 18:18:33 GMT 2021

On Wed, 21 Jul 2021 20:43:54 +0300
Basin Ilya via Cygwin <> wrote:
> Hi list.
> I've just noticed that regexp search works identically to exact match search in less and it prints this:
>     $ /usr/bin/less --version
>     less 581.2 (no regular expressions)

Are you using 32bit version of cygwin?
In my environment, this only happens in 32bit cygwin.

In 64 bit cygwin, it says:

less 581.2 (PCRE2 regular expressions)
Copyright (C) 1984-2021  Mark Nudelman

Takashi Yano <>

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