I want to make a Ultisnips snippet for auto completion of (), "", {}, etc. I have Tab as my expand and jump forward key. My snippet is:

snippet ( "parenthesis" iA

And it works great most of the times, but I sometimes have to write parenthesis or quotes without any text.

In that case I type ( and then it expands as (), but when I want to go out of the parenthesis by pressing Tab, it expands the snippet again and I'm left with ()).

I have no idea how to change this based on the documentation; is there an option to configure this behavior? Or how should I configure this snippet?

  • 1
    Welcome to Vi and Vim! When you want to go you out of the parenthesis, do you type ) or some other combination? With the $0 placeholder, I would expect you to be able to jump out using whatever keys jump between placeholders.
    – D. Ben Knoble
    Feb 11, 2021 at 17:28
  • So sorry, i did put in in the question, but it didn't appear. I use tab for expanding and jumping forward. I think this is the problem because ultisnips triggers the snippet instead of going to $0 , but it is really convenient for me and i would like to know if there is a way to continue using it without changing the trigger key.
    – jfab
    Feb 11, 2021 at 17:39
  • Ah, the duplication there could be an issue indeed.
    – D. Ben Knoble
    Feb 11, 2021 at 17:46
  • Maybe there is a way to configure the snippet so that it only expands when there is no ) right next to (. Could I implement that?
    – jfab
    Feb 11, 2021 at 18:03
  • If regex is allowed in the snippet, you could probably get to a negative lookahead
    – D. Ben Knoble
    Feb 11, 2021 at 18:13

1 Answer 1


I got it to work:

    global !p
    def mycontext(char):
        x = vim.current.window.buffer
        y = vim.current.window.cursor[0]
        z = vim.current.window.cursor[1]
            return x[y-1][z-1] + x[y-1][z] != char 
            return True 
    context "mycontext('()')"
    snippet ( "parenthesis" iA
  • Are you by chance jfab, the OP? You should be able to use the same account if you wish.
    – D. Ben Knoble
    Feb 12, 2021 at 15:14
  • I entered as a guest and now I cannot access the other account haha, sorry.
    – jfab
    Feb 12, 2021 at 15:34
  • I'm pretty sure you can merge the accounts, if you wish. vi.stackexchange.com/help/merging-accounts
    – D. Ben Knoble
    Feb 12, 2021 at 16:24

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