ChattynatorRaceIcons.lua

do
    local lower = string.lower
    local format = string.format
    local gsub = string.gsub
    local CreateAtlasMarkup = CreateAtlasMarkup

    local raceIcons = setmetatable({}, {
        __mode = "kv",
        __index = function(self, key)
            self[key] = CreateAtlasMarkup(key)
            --Debug(format('atlasMarkup[%q] = %s', key, dump(self[key])))
            return self[key]
        end
    })

    local raceReplacements = {
        Scourge = "Undead",
        HighmountainTauren = "Highmountain",
        LightforgedDraenei = "Lightforged",
        ZandalariTroll = "Zandalari",
    }

    Chattynator.API.AddModifier(function(data)
        if data.typeInfo.player and data.typeInfo.player.race and data.typeInfo.player.sex then
            local player = data.typeInfo.player
            local race, sex = player.race, player.sex
            local atlas = format("raceicon-%s-%s",
                    lower(raceReplacements[race] or race),
                    sex == 3 and "female" or "male"
            )
            local icon = raceIcons[atlas]
            --data.text = gsub(data.text, "|Hplayer:", markup .. "|Hplayer:")

            --[[
            (|Hplayer:[^|]+|h) matches the player link up to |h.
            (%[?) matches an optional [.
            The replacement %1%2 preserves both parts, then adds the icon markup after, regardless of whether [ is present.
            --]]
            data.text = gsub(data.text, "(|Hplayer:[^|]+|h)(%[?)", "%1%2" .. icon)

            --Debug("race = %q, atlas = %q, icon = %q", name, race, atlas, icon)
        end
    end)
end