Make dap.repl.evaluate_handler public

[wookayin]

This allows users to have a minimal configuration point for customizing dap-repl's behavior on printing variables or expressions.

(One possible approach/workaround for #1062)

[mfussenegger]

Thanks but I'd rather keep that prevent. Exposing it might get in the way latter when adding proper formatting extensions.

If you you really want to override the full handler, you could instead define a custom command:

  repl.commands.custom_commands = {
    [".p"] = function(text)
      local session = dap.session()
      if not session then
        return
      end
      session:evaluate(text, function(err, resp)
        vim.print(err or "no error")
        vim.print(resp or "no response")
      end)
    end,
  }

[wookayin]

I understand that you don't want this approach. However, what I wanted to override is the evaluate_handler without any custom commands (for #737 #1062, etc.), evaluation of any arbitrary expressions in the REPL; so custom commands would not work for me.

[mfussenegger]

However, what I wanted to override is the evaluate_handler without any custom commands (for https://github.com/mfussenegger/nvim-dap/issues/737 https://github.com/mfussenegger/nvim-dap/issues/1062, etc.), evaluation of any arbitrary expressions in the REPL; so custom commands would not work for me.

The snippet I posted allows to evaluate arbitrary expressions. .p foobar would evaluate foobar.

[wookayin]

I'd like to have foobar working instead of typing .p foobar.

dap> foobar
"foobar"