Re: [ANN] lcm -- Lua Code Melder, 2026-04

On Friday, April 24, 2026 at 3:22 am UTC+10 Martin Eden wrote:
> Hello list,
>
> I've updated lcm, Lua Code Melder.
>
> It's command-line tool to merge all .lua files in provided directory
> into one Lua code block.
>
>   https://github.com/martin-eden/lua_code_melder

This bit of the implementation is interesting:

  local add_module =
    function(module_name, module_code_str)
      local compiled_code = assert(load(module_code_str, module_name, 't'))

      _G.package.preload[module_name] =
        function(...)
          return compiled_code(...)
        end
    end

  for module_name, module_code_str in pairs(Modules) do
    add_module(module_name, module_code_str)
  end

I did make a combiner for the main Teal module to generate tl.lua, but it
instead just fills out package.preload directly, rather than doing separate
load(...) calls. It also scans the dependencies by looking for require 
statements
(This is helped by the fact that Teal always includes the brackets)

It instead just does the following for each module in the output file:

  -- module this from this.lua
  package.preload["this"] = function(...)
    -- contents of the this.lua file
  end

https://github.com/teal-language/tl/blob/main/extras/combine.tl

However it looks like your implementation will give correct line numbers for
errors and tracebacks, which is a very nice thing to have.

> [...]

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