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Ripped straight from an email I wrote to some friends, it's

Parentheses Crosshairs

Showing crosshairs on the cursor when it's on top of parentheses (or other elements of 'matchpairs').

Install

Use pathogen or vundle, or copy plugin/paren_crosshairs.vim to ~.vim/plugin.

Why?

The matchparen plugin tries to do a good thing; namely, highlight the paren that matches the one under the cursor. However, my friends and I found that having two parentheses highlighted always confounds our intuition about where the cursor actually is.

This plugin deals with this problem by setting cursorline and cursorcolumn when the cursor is on a paren.

Screenshot time!

Before

Demo of two highlighted parens

Where's the cursor?

After

Demo of paren crosshairs

There it is!

Historie

Here's the original text of the email. The current plugin just has a few niceties added:

func! TargetMatchpairs()
    if !exists('b:targetAcquired')
        let b:targetAcquired = 0
    endif
    if !exists('b:matchPairs')
        " '[:],{,},(,)' --> '[]{}()'
        let b:matchPairs = substitute(&matchpairs, "[,:]", "", "g")
    endif
    let curChar = getline('.')[col('.') - 1]
    let targetInReticule = stridx(b:matchPairs, curChar) >= 0
    if targetInReticule && !b:targetAcquired
        set cuc cul
        let b:targetAcquired = 1
    elseif !targetInReticule && b:targetAcquired
        set nocuc nocul
        let b:targetAcquired = 0
    endif
endfu

augroup TargetMatchpairs
    au!
    au CursorMoved,CursorMovedI * call TargetMatchpairs()
augroup END
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