Re: Another search 'n' highlight question

On 03/25/2011 09:37 PM, meino.cramer@gmx.de wrote:
> possible to do two totally different searches in the function
> and get highlighted the matches of *both* searches when the
> function returns control to the user. Due to teh complexity of
> the regular expressions of that matches it will be nearly
> impossible to combine both searches into one.

Well, the general method would be something like

let @/='\%('.pattern1.'\)\|\%('.pattern2.'\)'

Without having the exact regexps, it's somewhat hard to tell if
there are any hidden gotchas (things that come to mind would be
capture-groups and back-references in both patterns; SOL/EOL
anchors in both patterns; modality-altering flags like "\c" or
"\V" that would alter both pieces; etc). You might even be able
to do something like

function! Foo()
/complex_pattern1/
let pattern1=@/
/complex_pattern2/
let pattern2=@/
let @/='\%('.pattern1.'\)\|\%('.pattern2.'\)'
endfunction

Alternatively, you can use matches for the highlighting instead
of searches/search-highlighting if you don't need to use n/N to
jump between hits. Something like this (untested)

function! Foo()
call matchdelete(1)
/complex_pattern1/
call matchadd('Search', @/, 10, 1)
/complex_pattern2/
call matchadd('Search', @/, 10, 1)
endfunction

might do the trick. Finally, you might look at Dr. Chip's
logipat.vim which simplifies some of the pattern-combining.

-tim

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