Help setting up custom surround

[videbar]

Hi, I'm trying to set up a custom surround to work with wikilinks that look [[like this]], i.e., simply a pair of square brackets.

I've added this to my config and the add part works great, but I can't get delete to work. I've tried different lua expressions, but when trying to delete the separators, it inserts a new ] instead.

require("nvim-surround").setup({
    surrounds = {
        ["w"] = {
            add = { "[[", "]]" },
            find = function()
                return require("nvim-surround.config").get_selection { motion = "a]a]" }
            end,
            delete = "^(%[%[)().-(%]%])()$"

        }
    }
})

Any idea on what I may be doing wrong?

[kylechui]

Try changing a]a] -> 2a]; I think the former is a singular motion a], and then inserts a ] after the cursor.

[videbar]

Thanks! that was indeed the problem. Now both add and delete work, but I can't get change to work as well.
I've updated my config to look like this:

require("nvim-surround").setup({
    surrounds = {
        -- Wikilinks e.g., [[link]]
        ["w"] = {
            add = { "[[", "]]" },
            find = function()
                return require("nvim-surround.config").get_selection { motion = "2a]" }
            end,
            delete = "^(%[%[)().-(%]%])()$",
            change = {
                target = "^(%[%[)().-(%]%])()$",
                replacement = function()
                    return { { "[[" }, { "]]" } }
                end
            }

        }
    }
})

I can change other separators into wikilinks, but I can't change from wiklinks to other separators; this make me think that there is something wrong with change.target, but I have copied the expression from delete, so I think it should work. Do you know what may be the problem?

[kylechui]

Try omitting the change key altogether and see if that works.

[videbar]

Yep, that works. I guess that if change is not specified, it defaults to using the value of add for replacement and the value of delete for target?

[kylechui]

Yep, exactly