comment.lua

local U = require "Comment.utils"
local VISUAL_LINE = U.cmotion["V"]
local min, max = math.min, math.max

require("Comment").setup {
  opleader = {
    -- line = "gc", -- TODO: had to switch these to achieve the lua behaviour wanted
    line = "gb",
    -- block = "gb",
    block = "gc",
  },
  pre_hook = function(ctx)
    -- determine whether to use linewise or blockwise commentstrng (only for linewise visual selections)
    if vim.bo.filetype == "lua" and (ctx.cmotion == VISUAL_LINE) then
      local region = U.get_region "V"
      local diff = max(region.srow, region.erow) - min(region.srow, region.erow)
      ctx.ctype = (diff > 0) and U.ctype.block or U.ctype.line
    end
  end,
}