vim insert image attr

function! ImgAttr()
"    echo @"
"    "normal "kyi'
"    let tmp = @"
"    let p = expand("%:p:h")
"    let fullp = p .'/'. tmp
"    "echo fullp
"    let theWH=substitute(system('magick identify -format %wx%h "'.fullp.'"'),'\n','','')
"    "let theData=substitute(theWH,'\([0-9]*\)x\([0-9]*\)', ' width="\1" height="\2" ','')
"    let @y=substitute(theWH,'\([0-9]*\)x\([0-9]*\)', 'width="\1" height="\2" ','')
"    "echo theWH
"    "echo theData
"    normal f "yp
"    "startinsert
"    "normal "yp


    " Put cursor inside <img> tag somewhere, :call ImgAttr()
    " yank everything inside bracket (hopefully <img ....>)
    normal yi<

    "echo @"
    let filename=substitute(@",'.*src=[''"]\(.\{-}\)[''"] .*', '\1','')
    "echo filename
    
    let fullp = expand("%:p:h") .'/'. filename
    "echo fullp

    if @" !~ 'width'
        "echo 'got no width'
        let theWH=substitute(system('magick identify -format %wx%h "'.fullp.'"'),'\n','','')
        let @y=substitute(theWH,'\([0-9]*\)x\([0-9]*\)', 'width="\1" height="\2" ','')
        let @k=substitute(@", '\(src=[''"].\{-}[''"] \)', '\1' . @y,'')
        "echo @k
        normal vi<"kp
    endif

endfunction