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In vim8 there is a popup window feature which seems like vscode peek definition. Often I use gF to go to file with particular line number. Is there a way to open a file in popup window?

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    Not what you want, but try this: :set pvp=height:10,width:60 | nno <key> :<c-u>pedit <c-r><c-p><cr>. Replace <key> with whatever key sequence you want. See :h preview-popup and :h c^r^p.
    – user938271
    Nov 6 '20 at 16:05
  • @user938271 to me that seems exactly what OP wants (didn't specify the ability to edit it..)
    – Mass
    Nov 6 '20 at 23:17
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    But it doesn't handle the line number; although, I guess it wouldn't be too difficult to support with a bit of Vim script.
    – user938271
    Nov 7 '20 at 4:32
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You can use any of the popup_* functions that open popups with a buffer number, so,

let bufnr = bufadd(expand('<cfile>'))
let popup_id = popup_create (bufnr, {})

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