Re: Search anomaly?

On Wed, Dec 18, 2024 at 12:06 PM Christian Brabandt <cblists@256bit.org> wrote:

On Wed, 18 Dec 2024, Arun E wrote:

> With a buffer having just..
>
> aaa
> bbb
> aaa
>
> ..and with the cursor on the first 'a' on the first line, when you search for 'aa', the hit on the first line -- the 'aa' starting at column 2 -- is not found, rather the cursor lands on the 3rd line. Is this a documented behavior? It is
> the same behaviour in vim 8 and 9. I have not tried other versions.
>
> Playing around on it a bit more, I kinda understand why. Vim seems to try to match the "aa" in the current position, and avoid the 'a' in column 2 for subsequent matches. A zero width pattern seems to hit all occurrences (\(aa\)\@=).
>

Yes, I see the same going back to vim74. Interestingly traditional ex-vi
behaves the same, while nvi jumps by each single "a" forward (which is
also confusing: on a line like this:
aaaaaa
and then searching for aa and hitting n
the cursor will move only by a single a forward, while I would expect it
to move by 2 "a")

Ah, I see, thanks for the results on different editors.

Though out of the norm, I like the nvi behavior. Glad to know that vim

also could mimic that.

 

I checked the POSIX specs, but it doesn't mention anything about it (or
I did not find it).

> Anyway, the current behavior is very confusing, perhaps should be
> documented if not done already.

It's hard to find and hard to understand, but :h cpo-c let's you
configure this.

I had a hunch (or maybe I read sometime ago) that it would be in cpo, but thanks for pointing

out exactly where it is. Though I want that behavior, I will just use that on a need

basis. I am sure it is going to break many plugins if I turn it on unconditionally.

Thanks again Christian!

Regards,

-Arun

Best,
Christian
--
"For the most part, Democrats don't question the Republican's right to govern
when they win elections"

Heck, Democrats don't question the Republican's right to govern even when
Democrats win elections.
    -- Moopheus, on scienceblogs.com

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