From: "byroot (Jean Boussier) via ruby-core" <ruby-core@...>
Date: 2024-01-19T15:25:18+00:00
Subject: [ruby-core:116335] [Ruby master Feature#19117] Include the method owner in backtraces, not just the method name

Issue #19117 has been updated by byroot (Jean Boussier).





> Please try it with a Rails backtrace, so you get something like:



@Dan0042 I find that is much better than the existing backtrace. ��\\\_(���)_/��



I mean, we're including more information, so yes it's longer, but in your example it's the file location that is causing the line to be too long. You are already at 163 characters, including 131 for the path itself.



----------------------------------------

Feature #19117: Include the method owner in backtraces, not just the method name

https://bugs.ruby-lang.org/issues/19117#change-106361



* Author: byroot (Jean Boussier)

* Status: Open

* Priority: Normal

* Target version: 3.4

----------------------------------------

```

module Foo

  class Bar

    def inspect

      1 + '1'

    end

  end

end



p Foo::Bar.new

```



This code produce the following backtrace:





```

/tmp/foo.rb:4:in `+': String can't be coerced into Integer (TypeError)

	from /tmp/foo.rb:4:in `inspect'

	from /tmp/foo.rb:9:in `p'

	from /tmp/foo.rb:9:in `<main>'

```



This works, but on large codebases and large backtraces the method name isn't always all that revealing, most of the time you need to open many of the locations listed in the backtrace to really understand what is going on.



I propose that we also include the owner name:



```

/tmp/foo.rb:4:in `Integer#+': String can't be coerced into Integer (TypeError)

	from /tmp/foo.rb:4:in `Foo::Bar#inspect'

	from /tmp/foo.rb:9:in `Kernel#p'

	from /tmp/foo.rb:9:in `<main>'

```



I believe that in many case it would allow to much better understand the backtrace without having to jump back and forth between it and the source code.



This is inspired by @ivoanjo 's `backtracie` gem: https://github.com/ivoanjo/backtracie







-- 

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