写代码或文字时，经常会需要修改当前词为相反或 相关的词，比如

于是就有了以下 map 和相关函数
切换后仍会保留原大小写格式
核心见hy_string#modify#toggleWord函数

另外，比如设置了get和set的转化后，那么以下情况也会自动有效

getValue setValue
get_value set_value

原理是getValue如果未匹配，则会分别判断get和Value是否被定义

补充：在函数一开始还额外定义了 .prop 和 ["prop"] 的转化(不需要删除即可)

nnoremap <silent> <M-t> ciw<C-r>=hy_string#modify#toggleWord(@")<cr><esc>
xnoremap <silent> <M-t> s<C-r>=hy_string#modify#toggleWord(@")<cr><esc>

"true/false, up/down切换
"NOTE lis大小写或首字母大写，全用小写，其他情况保留原大小写
function! hy_string#modify#toggleWord(word)
    " .prop ? ["prop"]
    if (a:word =~ ‘^\v\.\w+$‘) | return ‘["‘ .strpart(a:word,1). ‘"]‘ | endif
    if (a:word =~ ‘^\v\["\w+"\]$‘) | return ‘.‘ .strpart(a:word,2,len(a:word)-4) | endif
    let lis = [
                \ [‘!‘, ‘！‘],
                \ [‘,‘, ‘，‘],
                \ [‘.‘, ‘。‘],
                \ [‘<^‘, ‘LCtrl & ‘],
                \ [‘>^‘, ‘RCtrl & ‘],
                \ [‘<+‘, ‘LShift & ‘],
                \ [‘>+‘, ‘RShift & ‘],
                \ [‘<!‘, ‘LAlt & ‘],
                \ [‘>!‘, ‘RAlt & ‘],
                \ [‘FireShot‘, ‘mcbpblocgmgfnpjjppndjkmgjaogfceg‘],
                \ [‘Surfingkeys‘, ‘gfbliohnnapiefjpjlpjnehglfpaknnc‘],
                \ [‘SwitchyOmega‘, ‘padekgcemlokbadohgkifijomclgjgif‘],
                \ [‘Tampermonkey‘, ‘dhdgffkkebhmkfjojejmpbldmpobfkfo‘],
                \ [‘show‘, ‘hide‘],
                \ [‘from‘, ‘to‘],
                \ [‘encode‘, ‘decode‘],
                \ [‘get‘, ‘set‘],
                \ [‘yes‘, ‘no‘],
                \ [‘on‘, ‘off‘],
                \ [‘down‘, ‘up‘],
                \ [‘left‘, ‘right‘],
                \ [‘top‘, ‘bottom‘],
                \ [‘this‘, ‘base‘],
                \ [‘read‘, ‘write‘],
                \ [‘row‘, ‘column‘],
                \ [‘rows‘, ‘columns‘],
                \ [‘RowHeight‘, "ColumnWidth"],
                \ [‘focus‘, ‘blur‘],
                \ [‘lower‘, ‘upper‘],
                \ [‘odd‘, ‘even‘],
                \ [‘before‘, ‘after‘],
                \ [‘max‘, ‘min‘],
                \ [‘prev‘, ‘next‘],
                \ [‘true‘, ‘false‘],
                \ [‘enable‘, ‘disable‘],
                \ [‘enabled‘, ‘disabled‘],
                \ [‘permit‘, ‘deny‘],
                \ [‘user‘, ‘pwd‘],
                \ [‘username‘, ‘password‘],
                \ [‘smtp‘, ‘imap‘],
                \ [‘width‘, ‘height‘],
                \ [‘horizontal‘, ‘vertical‘],
                \ [‘var‘, ‘const‘],
                \ [‘absolute‘, ‘relative‘],
                \ [‘hkcr‘, ‘HKEY_CLASSES_ROOT‘],
                \ [‘hkcu‘, ‘HKEY_CURRENT_USER‘],
                \ [‘hklm‘, ‘HKEY_LOCAL_MACHINE‘],
                \ [‘hku‘, ‘HKEY_USERS‘],
                \ [‘hkcc‘, ‘HKEY_CURRENT_CONFIG‘],
                \ [‘ActiveCell‘, ‘selection‘],
                \ [‘WinActive‘, ‘WinActivate‘],
                \ [‘SendMessage‘, ‘PostMessage‘],
                \ [‘setTimeout‘, ‘setInterval‘],
                \ [‘screen‘, ‘window‘],
                \ [‘左‘, ‘右‘],
                \ [‘上‘, ‘下‘],
                \ [‘水平‘, ‘垂直‘],
                \ [‘成功‘, ‘失败‘],
                \ [‘显示‘, ‘隐藏‘],
                \ [‘jshint‘, ‘eslint‘],
                \ [‘scanf‘, ‘printf‘],
                \ [‘WinGetClientPos‘, ‘WinGetPos‘],
                \ [‘cells‘, ‘range‘],
                \ [‘MergeArea‘, ‘MergeCells‘],
                \ [‘ComObjActive‘, ‘ComObject‘],
                \ [‘chr‘, ‘ord‘],
                \ [‘FindFirst‘, ‘FindAll‘],
                \ [‘FileMove‘, ‘FileCopy‘],
                \ [‘FileDelete‘, ‘FileRecycle‘],
                \ [‘font‘, ‘interior‘],
                \ [‘querySelector‘, ‘querySelectorAll‘],
                \ [‘innerHTML‘, ‘innerText‘],
                \ [‘LCtrl‘, ‘RCtrl‘],
                \ [‘LShift‘, ‘RShift‘],
                \ [‘LAlt‘, ‘RAlt‘],
                \ [‘run‘, ‘RunWait‘],
                \ [‘msgbox‘, ‘tooltip‘],
                \ [‘PgDn‘, ‘PgUp‘],
                \ [‘RegExReplace‘, ‘RegExMatch‘],
                \ [‘access‘, ‘trunk‘],
                \ [‘waitForPackage‘, ‘waitForActivity‘],
                \ [‘textStartsWith‘, ‘textMatches‘],
                \ [‘clickByWindow‘, ‘clickStayByWindow‘],
                \ [‘toastLog‘, ‘toastInfo‘],
                \ [‘0x111‘, ‘WM_COMMAND:=0x111‘],
                \ [‘WM_COMMAND‘, ‘WM_COMMAND:=0x111‘],
                \ [‘0x112‘, ‘WM_SYSCOMMAND:=0x112‘],
                \ [‘WM_SYSCOMMAND‘, ‘WM_SYSCOMMAND:=0x112‘],
                \ [‘currentPackage‘, ‘currentActivity‘],
                \ [‘github.com‘, ‘github.com.cnpmjs.org‘],
                \ ]
    let word = a:word
    "获取 word 前后内容(用来 setline)
    let sLine = getline(‘.‘)
    let idx0 = stridx(sLine, word, col(‘.‘)-strlen(word))
    let strBefore = strpart(sLine, 0, idx0)
    let strAfter = strpart(sLine, idx0+strlen(word))
    "echom strBefore .‘--‘. strAfter .‘--‘. word
    "lPair 转成 dic(相互为key，方便判断)
    let dic = {}
    for lPair in lis
        let dic[lPair[0]] = lPair[1]
        let dic[lPair[1]] = lPair[0]
    endfor
    "NOTE dic 额外增加单向的内容
    let dic[‘int‘] = ‘integer‘
    let dic[‘integer‘] = ‘^\d+$‘
    "处理单词大小写
    let upCase = hy_string#get#upperCase(word)
    let wordFixed = upCase > 0 ? tolower(word) : word "wordFixed 用来调整大小写
    "echom word .‘ ‘. wordFixed
    if !has_key(dic,wordFixed) "不在定义列表内
        "echom ‘not in dic‘
        "aUp → aDown
        if word =~# ‘[A-Z]‘
            let char = ‘‘
            let l = hy_string#split#byUpper(word)
        else
            let char = matchstr(word, ‘\c[^a-z]‘)
            let l = split(word, ‘\c[^a-z]‘)
        endif
        for i in range(len(l))
            let upCase = hy_string#get#upperCase(l[i])
            let wordFixed = upCase > 0 ? tolower(l[i]) : word "wordFixed 用来调整大小写
            if has_key(dic, wordFixed) "找到匹配
                let res = dic[wordFixed]
                "恢复大小写
                if upCase == 1
                    let res = tolower(res)
                elseif upCase == 2
                    let res = toupper(res)
                elseif upCase == 3
                    let res = substitute(res, ‘.*‘, ‘\L\u&‘, ‘‘)
                endif
                "修改 l
                let l[i] = res
                return join(l, char)
            endif
        endfor
        return word
    else
        let res = dic[wordFixed]
        if upCase == 1
            let res = tolower(res)
        elseif upCase == 2
            let res = toupper(res)
        elseif upCase == 3
            let res = substitute(res, ‘.*‘, ‘\L\u&‘, ‘‘)
        endif
    endif
    return res
    "    execute "normal! ciw" . res
    "call setline(line(‘.‘), strBefore . res . strAfter)
endfunction

"获取字符串的大小写情况
"1为小写
"2为大写
"3为首字母大写
"0为其他情况(strUpper)
function! hy_string#get#upperCase(str) abort
    if a:str !~ ‘\a‘ "没字母
        return 0
    elseif a:str ==# tolower(a:str)
        return 1
    elseif a:str ==# toupper(a:str)
        return 2
    elseif a:str =~# ‘\v^\u\l*$‘
        return 3
    else
        return 0
    endif
endfunction

"abcUp转成 [‘abc‘, ‘Up‘]
function! hy_string#split#byUpper(str) abort
    let char = ‘!‘
    let s = substitute(a:str, ‘\v\C[A-Z]‘, char.‘&‘, ‘g‘) "大写字母前增加符号用来 split
    if strcharpart(s, 0, 1) == char | let s = strcharpart(s, 1) | endif
    return split(s, char)
endfunction

Vim一键修改