Create Markdown hyperlink automatically with title. Usage: type ``:MDURL`` over a URL.

CreateMarkdownHyperLink.vim

" Create Markdown Hyperlink Automatically
" Requires mattn/webapi-vim (or vital.vim), tpope/vim-surround,
" kana/vim-textobj-user, mattn/vim-textobj-url
" command! MDURL call CreateMarkdownHyperLink()
" command! MDURLTitle call CreateMarkdownHyperLinkWithTitle()
function! GetWebPageTitle(url)
    let url = substitute(a:url,'\n\|\r\|\r\n','','g')
    let res = webapi#http#get(url)
    let dom = webapi#html#parse(res.content)
    return dom.childNode('head').childNode('title').value()
endfunction
function! CreateMarkdownHyperLinkWithTitle()
    let areg = @a
    normal viu
    normal! "ay
    let url = @a
    try
        let title = GetWebPageTitle(url)
    catch
        echo "Can't get title.Please input title by yourself."
        call CreateMarkdownHyperLink()
        return
    endtry
    execute 'normal viuS)i['.title.']'
    let @a = areg
endfunction
function! CreateMarkdownHyperLink()
    execute 'normal viuS)i[]'
    startinsert
endfunction
aug markdown
    au! 
    autocmd FileType markdown command! -buffer MDURL call CreateMarkdownHyperLinkWithTitle()
"     autocmd FileType markdown nnoremap <buffer><silent>  [Markdown]u :<C-u>call CreateMarkdownHyperLinkWithTitle()<CR>
aug END

単純にタイトルを挿入している為imapが適用されてしまうバグ直します。そのうち。