Bug #18753: lineno= is not returning an integer

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: 3.1.1
• Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN

[buzztaiki (Taiki Sugawara)]

The call-seq for argf_set_lineno says it returns an integer, but in fact it returns nil.

https://github.com/ruby/ruby/blob/84f410e5e64a2480a86de7c50f01f01f71816435/io.c#L9330

p ARGF.send(:lineno=, 1)

nil

For IO, the input integer value is returned as documented.

p File.open(__FILE__).send(:lineno=, 1)

1

I think ARGF should also return the input value.
I think it is so trivial, but I'm having a little trouble with (adding ARGF to rbs)[https://github.com/ruby/rbs/pull/975].

[buzztaiki (Taiki Sugawara)]

Ah.. I missed link markup...

[nobu (Nobuyoshi Nakada)]

The document says that the value of assignment expressions is the RHS.
This is not a method spec, but a language spec.
The value of attribute setter methods have no meaning.

[nobu (Nobuyoshi Nakada)]

I think the result of setter methods don’t need/shouldn’t to be documented in each methods.

[buzztaiki (Taiki Sugawara)]

I see. Thank you for your comments.

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Rejected