[ruby-core:115258] [Ruby master Bug#19985] Confusing error message when nonexistent `Pathname` for `require`

Issue #19985 has been updated by mame (Yusuke Endoh).


A little explanation.

Actually, the builtin `Kernel#require` has accepted a Pathname object by calling #to_path.

```
$ cat test.rb
puts "Hello"

$ ruby -v --disable-gems -rpathname -e 'require Pathname("./test")'
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
Hello
```

However, if the file did not exist, it would unintentionally result in a TypeError.

```
$ ruby -v --disable-gems -rpathname -e 'require Pathname("./test2")'
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
-e:1:in `require': no implicit conversion of Pathname into String (TypeError)
        from -e:1:in `<main>'
```

Therefore, nobu has fixed the bug by commit:4329554f171fdb483cafa672df5f2a08741940c5.

```
$ ./local/bin/ruby -v --disable-gems -rpathname -e 'require Pathname("./test")'
ruby 3.3.0dev (2023-11-06T08:58:47Z master 4329554f17) [x86_64-linux]
Hello

$ ./local/bin/ruby -v --disable-gems -rpathname -e 'require Pathname("./test2")'
ruby 3.3.0dev (2023-11-06T08:58:47Z master 4329554f17) [x86_64-linux]
-e:1:in `require': cannot load such file -- ./test2 (LoadError)
        from -e:1:in `<main>'
```

----------------------------------------
Bug #19985: Confusing error message when nonexistent `Pathname` for `require`
https://bugs.ruby-lang.org/issues/19985#change-105174

* Author: vo.x (Vit Ondruch)
* Status: Closed
* Priority: Normal
* Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED
----------------------------------------
It seems that RubyGems / Bundler `require` method overrides of accept `Pathname` as and argument

~~~
$ ruby -rpathname -e '
pa = Pathname.new("test")
require pa
'
<internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:85:in `require': cannot load such file -- test (LoadError)
	from <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from -e:3:in `<main>'
~~~

while plain Ruby require does not:

~~~
$ ruby --disable-gems -rpathname -e '
pa = Pathname.new("test")
require pa
'
-e:3:in `require': no implicit conversion of Pathname into String (TypeError)
	from -e:3:in `<main>'
~~~

This inconsistency is surprising. It seems that RubyGems / Bundler developers think [1] that Ruby `require` should also accept `Pathname`.

~~~
$ ruby -v
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
~~~
[1]: https://github.com/rubygems/rubygems/pull/7128



-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- [e-mail]
 To unsubscribe send an email to [e-mail]
 ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/