Is there some manual way to add my own snippets to your plugin, or now I need to clone it and edit by hands?

[daniilrozanov]

I think this plugin gives pretty good capabilities to add custom snippets

[iurimateus]

To remove a snippet, you can use the luasnip API. I think you might be able to mutate the tables that are required on init.lua, but it's a bit hacky.

You can override a snippet by adding another with the same trigger, but with a higher priority. Most have default prio of 0.

Example, overriding mk to $$

local ls = require("luasnip")
local conds = require("luasnip.extras.expand_conditions")
 
local utils = require("luasnip-latex-snippets.util.utils")

local not_math = utils.not_math() -- pass true if using Treesitter

local snip = ls.parser.parse_snippet({ trig = "mk", name = "Math" }, "$ ${1:${TM_SELECTED_TEXT}} $$0")

snip.condition = not_math
snip.priority = 10 -- anything greater than 0.

ls.add_snippets("tex", { snip }, {
    type = "autosnippets",
})

Do you have an interface in mind?

[iurimateus]

Also giving a hacky solution to remove a snippet would be helpful.

This is what I use for friendly-snippets:

local function dups_tex(s)
  local description = type(s.dscr) == "table" and s.dscr[1] or s.dscr
  return
    (
      s.name == "Bold Text"
      or s.name == "Italic Text"
      or s.name == "Math"
      or s.name == "Sub Section"
      or s.name == "Sub Sub Section"
    )
      or s.trigger == "item"
      or s.trigger:match "mathinline$"
      or ((s.name == "Theorem" or s.name == "Proof") and description and #description < 30)
end

local license_or_copyright = function(s)
  local description = type(s.dscr) == "table" and s.dscr[1] or s.dscr
  return description and description:match "License" or s.name == "copyright"
end

local function remove_s(s, fn)
  if s and fn and fn(s) then
    s:invalidate()
    return true
  end
end

-- Remove 'License' and 'copyright' snippets from friendly-snippets
local _remove = function(bufnr, ft)
  if bufnr == 0 or bufnr == nil then
    bufnr = vim.api.nvim_get_current_buf()
  end

  ft = ft or vim.bo[bufnr].filetype

  -- https://github.com/rafamadriz/friendly-snippets/blob/main/snippets/global.json
  local all_snippets = ls.get_snippets "all"
  local ft_snippets = ls.get_snippets(ft)

  for _, t in ipairs { all_snippets, ft_snippets } do
    for _, s in pairs(t) do
      remove_s(s, license_or_copyright)
    end
  end

  if ft == "tex" then
    for _, s in pairs(ft_snippets) do
      remove_s(s, dups_tex)
    end
  end
end

local known = {}
local g = vim.api.nvim_create_augroup("__remove_ls_snippets", {})
vim.api.nvim_create_autocmd("User", {
  group = g,
  pattern = "LuasnipSnippetsAdded",
  callback = function(args)
    local ft = vim.bo[args.buf].filetype or "empty"
    if not known[ft] then
      known[ft] = vim.loop.new_timer()
    end

    known[ft]:start(
      500,
      0,
      vim.schedule_wrap(function()
        _remove(args.buf, ft)
      end)
    )
  end,
})

vim.api.nvim_create_user_command("RemoveLicenseSnippets", function()
  _remove()
end, {})

_remove()

Timers (known) are leaking though.

And can one fix the code to be valid lua (lua is not javascript).

?

[kiryph]

?

I was referring to var snip and comments introduced with // which is not valid lua.

[iurimateus]

I was referring to var snip and comments introduced with // which is not valid lua.

Thanks, fixed it.

[iurimateus]

update:

local ls = require("luasnip")
local utils = require("luasnip-latex-snippets.util.utils")
local is_math = utils.with_opts(utils.is_math, true) -- true to use treesitter
local not_math = utils.with_opts(utils.not_math, true) -- true to use treesitter

-- set a higher priority (defaults to 0 for most snippets)
local snip = ls.parser.parse_snippet(
  { trig = "mk", name = "Math", condition = utils.pipe({ not_math }), priority = 10 },
  "$ ${1:${TM_SELECTED_TEXT}} $$0"
)

ls.add_snippets("tex", { snip }, {
  type = "autosnippets",
})

[grepgrok]

Hey, I've was trying to get this to work and was having issues (something about trying to call upvalue 'condition'). I figured out that LuaSnip expects the [condition](https://github.com/L3MON4D3/LuaSnip/blob/master/DOC.md#snippets) here to be a function fn(line_to_cursor, matched_trigger, captures) -> bool except utils.not_math() here resolves to a bool (and there seems to be similar problems with the other functions in utils). Should these be returning a function () -> bool? Or am I missing something?

[iurimateus]

Sorry for the late reply. You're correct, I've updated the example.