registerFunction with lower-case function name is difficult to debug (fails without explaining the capitalization issue).

[dlants]

I'm defining a function:

  plugin.registerFunction(
    "magenta_lsp_response",
    (result: unknown) => {
      context.logger.log(
        `magenta_lsp_response got callback ${JSON.stringify(result)}`,
      );
    },
    {},
  );

I am running :UpdateRemotePlugins, and seeing the function defined in the rplugin manifest:

" node plugins
call remote#host#RegisterPlugin('node', '/Users/denislantsman/src/magenta.nvim/rplugin/node/magenta', [
      \ {'sync': v:false, 'name': 'WinClosed', 'type': 'autocmd', 'opts': {'pattern': '*'}},
      \ {'sync': v:false, 'name': 'Magenta', 'type': 'command', 'opts': {'nargs': '1'}},
      \ {'sync': v:false, 'name': 'MagentaKey', 'type': 'command', 'opts': {'nargs': '1'}},
      \ {'sync': v:false, 'name': 'magenta_lsp_response', 'type': 'function', 'opts': {}},
     \ ])

However, when I try and use it from nvim, I get "unknown function":

:call magenta_lsp_response()
E117: Unknown function: magenta_lsp_response

:lua vim.fn.magenta_lsp_response()
E5108: Error executing lua Vim:E117: Unknown function: magenta_lsp_response
stack traceback:
        [C]: in function 'magenta_lsp_response'
        [string ":lua"]:1: in main chunk

Any help would be appreciated. Thanks!

[dlants]

Ah, it was failing since non-built-in functions must start with capital letters. I think it would be nice if this failed with a more obvious error message.