[vim]自动更新修改时间和修改次数

目的

每次修改文件后，希望在文件头上的反应出最后修改时间，并更新修改次数

主要语法

submatch(n)

引用前面匹配的内容， submatch(0)是全部， submatch(1)是第一个

getpos(".")

得到当前光标位置
setpos(‘.', save_cursor)用来恢复位置

winsaveview()

保存整个layout

实际代码

function TimeStamp()
"    let save_cursor= getpos(".")
    let win_view = winsaveview()
    %s/\(Last Change\s*:\s*\)\(.*\)$/\=submatch(1).strftime("%Y-%m-%d %H:%M:%S")/ge
    %s/\(Last Modified\s*:\s*\)\(.*\)$/\=submatch(1).strftime("%Y-%m-%d %H:%M:%S")/ge
    %s/\(Update Count\s*:\s*\)\(\d\+\)/\=submatch(1).(submatch(2)+1)/ge
"    call setpos('.', save_cursor)
    call winrestview(win_view)
endfunction
command -nargs=0 TimeStamp call TimeStamp()

function AutoTimeStamp()
    augr tagdate
    au!
    au BufWritePost,FileWritePost * call TimeStamp()
    augr END
endfunction
command -nargs=0 AutoTimeStamp call AutoTimeStamp()

if !exists('*Preserve_view')
    function! Preserve_view(command)
        " Preparation: save last search, and cursor position.
        let win_view = winsaveview()
        let old_query = getreg('/')
        execute 'keepjumps ' . a:command
        " Clean up: restore previous search history, and cursor position
        call winrestview(win_view)
        call setreg('/', old_query)
    endfunction
endif

fun! CleanExtraSpaces()
    call Preserve_view('%s/\s\+$//ge')
endfunc
com! Clsspace :call CleanExtraSpaces()