Hello all, I need to convert AST with possible long binary to string. Macro.to_string() uses Inspect and Inspect has the printable_limit option set to 4096 for binaries by default. I am looking for the way to increase it so binary will not be truncated on to_string() Thanks, Serge

I believe this is already fixed in master. Until that’s released you can do Macro.to_string(v, fn node, _ when is_binary(node) -> inspect(node, printable_limit: :infinity) _, string -> string end)

This seems like a bug in Macro.to_string to me - it should print everything out. Could you open a bug report?

Done https://github.com/elixir-lang/elixir/issues/7545 Thank you, Serge

Now that Macro.to_string/2 is deprecated, how would one do this?

The bug is fixed so now you can use Macro.to_string/1 and if you’re trying to do something else then that would be best to discuss in a new thread where you state what you’re trying to accomplish.

This is too related to open a new thread. But when posting before, I wasn’t aware that the problem exists only for maps now. It’s basically the same issue but for maps. Opened a GH issue here: https://github.com/elixir-lang/elixir/issues/13875

Copying over José’s answer for shortcuts: The difference here is that maps are not valid AST. We fallback to inspect in Macro.to_string for convenience, because the goal of the macro is mostly debugging, but if you returned that from a macro, Elixir would raise accordingly. In any case, it won’t b…

Ironically I had a similar issue the other day. Code.quoted_to_algebra/2 offers a lot more control: macro_to_string = fn m -> Code.quoted_to_algebra(m, pretty: true, locals_without_parens: [field: 4, field: 3, field: 2, value: 2, value: 3] ) |> Inspec…

This doesn’t truncate the map. However, it still does a better job formatting the code when escaping the map to a valid AST.

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How to increase printable_limit from Macro.to_string()?

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axelson October 2, 2024, 6:44am 8

Ah, I see. Yeah that does look like a related bug to me