textobj.vim

" pairs
for mapmode in [ "o", "x" ]
    for delimiter in [ "{}", "()", "[]", "<>" ]
        let opening = delimiter[0]
        let closing = delimiter[1]
        for modifier in [ "i", "a" ]
            for trigger in [ opening, closing ]
                execute mapmode . "noremap <silent> " . modifier . "n" . trigger . " :<C-U>normal! f" . opening . "v" . modifier . closing . "<CR>"
                execute mapmode . "noremap <silent> " . modifier . "l" . trigger . " :<C-U>normal! F" . closing . "v" . modifier . opening . "<CR>"
            endfor
        endfor
    endfor

    " single (text objects like da. delete one dot)
    for delimiter in [ "_", ".", ":", ",", ";", "<bar>", "/", "<bslash>", "*" ]
        execute mapmode . "noremap <silent> i"  . delimiter . " :<C-U>normal! t" . delimiter .  "vT" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> a"  . delimiter . " :<C-U>normal! f" . delimiter .  "vT" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> in" . delimiter . " :<C-U>normal! f" . delimiter . "lvt" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> an" . delimiter . " :<C-U>normal! f" . delimiter . "lvf" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> il" . delimiter . " :<C-U>normal! F" . delimiter . "hvT" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> al" . delimiter . " :<C-U>normal! F" . delimiter .  "vT" . delimiter . "<CR>"
    endfor

    " double (text objects like dan" delete both quotes)
    " doesn't handle one surrounding whitespace like da" does
    for delimiter in [ "\"", "'", "`" ]
        execute mapmode . "noremap <silent> in" . delimiter . " :<C-U>normal! f" . delimiter . "lvt" . delimiter . "<CR>" | " same as above
        execute mapmode . "noremap <silent> an" . delimiter . " :<C-U>normal! f" . delimiter .  "vf" . delimiter . "<CR>" | " same as above
        execute mapmode . "noremap <silent> il" . delimiter . " :<C-U>normal! F" . delimiter . "hvT" . delimiter . "<CR>"
        execute mapmode . "noremap <silent> al" . delimiter . " :<C-U>normal! F" . delimiter .  "vF" . delimiter . "<CR>"
    endfor
endfor