On 2020-07-25 15:59, Adrian Keister wrote:
> Now is the time for all good men to come to the aid of their
> country.
>
> In this test, I want to find all occurrences where the word 'aid'
> is within ten words of the word 'country'. How can I do that in Vim?
It's way ugly and requires using the old regex engine[1] (asserted by
the "\%#=1" in the following pattern) to work, but this should do the
trick and be fairly DRY (only requires putting in each term once):
\%#=1\%(\S\+\_s\+\)\{,9}\<aid\>\&\%(\S\+\_s\+\)\{,9}\<country\>
I might have a fenceposting issue where "9" should be "8" or "10",
but it should give you the foundation to mess around. Also, I added
the "\<" and "\>" to anchor the words so you don't find things like
"I said my uncle is a country boy" (finding the "aid" in "said").
Again, season to taste for your own needs.
The cursor lands a little weirdly (especially noticable if you have
syntax highlighting turned on) because it starts from the point at
which "within the next N words you'll find "aid" and within the next N
words you'll also find "country".
Alternatively, if you don't mind typing your literals more than once,
you can do
/\<aid\>\%(\_s\+\S\+\)\{,10}\_s\+\<country\>\|\<country\>\%(\_s\+\S\+\)\{,10}\_s\+\<aid\>
which will highlight a little more neatly at the cost of extra typing.
However, it also doesn't scale as well if you have more than 2 words
because you need to provide every possible ordering. The method at
the top scales easily for however many words you want within an
N-word range.
Hopefully one or the other works well for you.
-tim
[1] For the record, the new regex engine gives me an
E363: pattern uses more memory than 'maxmempattern'
where the old engine works fine.
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