[ruby-core:117202] [Ruby master Bug#20343] Ripper.sexp in Ruby 3.4 returns nil
From:
"koic (Koichi ITO) via ruby-core" <ruby-core@...>
Date:
2024-03-17 18:13:47 UTC
List:
ruby-core #117202
Issue #20343 has been reported by koic (Koichi ITO).
----------------------------------------
Bug #20343: Ripper.sexp in Ruby 3.4 returns nil
https://bugs.ruby-lang.org/issues/20343
* Author: koic (Koichi ITO)
* Status: Open
* ruby -v: ruby 3.4.0dev (2024-03-17T10:09:37Z master 5fd6b461c7) [x86_64-darwin23]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
In Ruby 3.4.0's Ripper, there is the following incompatible behavior:
## Expected (Ruby 3.3)
It is expected that tokens will be returned.
```console
$ ruby -rripper -ve "p Ripper.sexp('foo[bar, &baz] += 1')"
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-darwin22]
[:program, [[:opassign, [:aref_field, [:vcall, [:@ident, "foo", [1, 0]]], [:args_add_block, [[:vcall, [:@ident, "bar", [1, 4]]]], [:vcall, [:@ident, "baz", [1, 10]]]]], [:@op, "+=", [1, 15]], [:@int, "1", [1, 18]]]]]
$ ruby -rripper -ve "p Ripper.sexp_raw('foo[bar, &baz] += 1')"
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-darwin22]
[:program, [:stmts_add, [:stmts_new], [:opassign, [:aref_field, [:vcall, [:@ident, "foo", [1, 0]]], [:args_add_block, [:args_add, [:args_new], [:vcall, [:@ident, "bar", [1, 4]]]], [:vcall, [:@ident, "baz", [1, 10]]]]], [:@op, "+=", [1, 15]], [:@int, "1", [1, 18]]]]]
```
## Actual (Ruby 3.4)
`nil` is returned.
```console
$ ruby -rripper -ve "p Ripper.sexp('foo[bar, &baz] += 1')"
ruby 3.4.0dev (2024-03-17T10:09:37Z master 5fd6b461c7) [x86_64-darwin23]
nil
$ ruby -rripper -ve "p Ripper.sexp_raw('foo[bar, &baz] += 1')"
ruby 3.4.0dev (2024-03-17T10:09:37Z master 5fd6b461c7) [x86_64-darwin23]
nil
```
The same applies to the following cases.
```ruby
foo[bar, &baz] += 1
foo[bar, &baz] ||= 1
foo[bar, &baz] &&= 1
foo.foo[bar, &baz] += 1
foo.foo[bar, &baz] ||= 1
foo.foo[bar, &baz] &&= 1
```
This was discovered in a failure of Prism's CI:
https://github.com/ruby/prism/actions/runs/8317131929/job/22757514162?pr=2607
--
https://bugs.ruby-lang.org/
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