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From: Janis Papanagnou <janis_papanagnou+ng@hotmail.com>
Newsgroups: comp.unix.shell,comp.unix.programmer,comp.lang.misc
Subject: Re: Command Languages Versus Programming Languages
Date: Fri, 22 Nov 2024 12:47:16 +0100
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On 21.11.2024 23:05, Lawrence D'Oliveiro wrote:
> On Thu, 21 Nov 2024 08:15:41 -0000 (UTC), Muttley wrote:
>> On Wed, 20 Nov 2024 21:43:41 -0000 (UTC)
>> Lawrence D'Oliveiro <ldo@nz.invalid> boring babbled:
>>[...]
>>>
>>> That’s what “^” and “$” are for.
>>
>> Yes, but people forget about those (literal) edge cases.

But *only* _literally_ "edge cases". Rather they're simple
and basics of regexp parsers since their beginning.

> Those of us who are accustomed to using regexes do not.

It's one of the first things that regexp newbies learn,
I'd say.

> 
> Another handy one is “\b” for word boundaries.

I prefer \< and \> (that are quite commonly used) for such
structural things, also \( and \) for allowing references
to matched parts. And I prefer the \alpha regexp pattern
extension forms for things like \d \D \w \W \s \S . (But
that's not only a matter of taste but also a question of
what any regexp parser actually supports.)

Janis