Can `FeMaco` add a mechanism for clean temp file

[AbaoFromCUG]

Thanks for this plugin.

I have a slight issue with Femaco, when I use FeMaco to edit inline code block in a floating window, the formatter tool don't be affected by config (e.g., .stylua.tomal for stylua). I realized that FeMaco create temp file use os.tmpname() default, which return /temp/lua_xxxx, it is out of source folder.

So I add customize post_open_float and create_tmp_filepath for the purpose of creating tempfile in source folder

local function femaco()
    local cache_filename
    require("femaco").setup({
        post_open_float = function(winnr)
            print(string.format("post_open_float: %s", winnr))
            vim.api.nvim_create_autocmd("WinClosed", {
                pattern = "*",
                callback = function()
                    local closed_win = vim.fn.expand("<amatch>")
                    if tonumber(closed_win)== winnr then
                        print(string.format("remove temp file %s", cache_filename))
                        vim.loop.fs_unlink(cache_filename)
                    end
                end,
            })
        end,
        create_tmp_filepath = function(filetype)
            cache_filename = string.format("%s/.femaco_%d_%s", vim.fn.getcwd(), math.random(100, 999), filetype)
            return cache_filename
        end,
    })
end

everything works perfect until I open multiple FeMaco floating windows to edit different code blocks. the cache_filename will be override, so some tempfile will not be clean right.

could FeMaco add ability to cleanup temp file?

Refer to null-ls.nvim, which need tempfile to format file sameily

https://github.com/jose-elias-alvarez/null-ls.nvim/blob/db09b6c691def0038c456551e4e2772186449f35/lua/null-ls/helpers/generator_factory.lua#L300-L311

[AbaoFromCUG]

Here is a resolution
AbaoFromCUG@89f831a

[AckslD]

Hi @AbaoFromCUG, thanks for the issue. I think I understand the issue and makes sense to fix it. Feel free to open an PR :+

[CobaltSpace]

Something that seems to work is

local function femaco()
    local g_cache_filename
    require("femaco").setup({
        post_open_float = function(winnr)
            print(string.format("post_open_float: %s", winnr))
            local cache_filename = g_cache_filename
            vim.api.nvim_create_autocmd("WinClosed", {
                pattern = "*",
                callback = function()
                    local closed_win = vim.fn.expand("<amatch>")
                    if tonumber(closed_win)== winnr then
                        print(string.format("remove temp file %s", cache_filename))
                        vim.loop.fs_unlink(cache_filename)
                    end
                end,
            })
        end,
        create_tmp_filepath = function(filetype)
            g_cache_filename = string.format("%s/.femaco_%d_%s", vim.fn.getcwd(), math.random(100, 999), filetype)
            return g_cache_filename
        end,
    })
end

[AckslD]

@CobaltSpace thanks, feel free to open a PR if you want or anyone else to continue #31 or #38