[ruby-core:122333] [Ruby Bug#21381] Different error messages when mixing `it` and `_1` in block for Prism and parse.y

[ruby-core:122333] [Ruby Bug#21381] Different error messages when mixing `it` and `_1` in block for Prism and parse.y

[herwin (Herwin W) via ruby-core]

Issue #21381 has been reported by herwin (Herwin W).

----------------------------------------
Bug #21381: Different error messages when mixing `it` and `_1` in block for Prism and parse.y
https://bugs.ruby-lang.org/issues/21381

* Author: herwin (Herwin W)
* Status: Open
* ruby -v: ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux] and ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```
$ ruby -v -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { it + _1 }
    |             ^~ numbered parameters are not allowed when 'it' is already used

$ ruby -v --parser=parse.y -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: 'it' is already used in
-e:1: current block here
proc { it + _1 }
ruby: compile error (SyntaxError)
```
and the other way around:
```
$ ruby -v -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { _1 + it}
    |             ^~ `it` is not allowed when a numbered parameter is already used

$ ruby -v --parser=parse.y -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: numbered parameter is already used in
-e:1: current block here
proc { _1 + it}
ruby: compile error (SyntaxError)
```
It would expect the relevant part of messages to match. To be clear, I would consider this the relevant parts:
```
numbered parameters are not allowed when 'it' is already used
'it' is already used in
```
and
```
`it` is not allowed when a numbered parameter is already used
numbered parameter is already used
```




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[ruby-core:122334] [Ruby Bug#21381] Different error messages when mixing `it` and `_1` in block for Prism and parse.y

[herwin (Herwin W) via ruby-core]

Issue #21381 has been updated by herwin (Herwin W).


(very minor issue, I wouldn't mind too much if it would not be fixed)

----------------------------------------
Bug #21381: Different error messages when mixing `it` and `_1` in block for Prism and parse.y
https://bugs.ruby-lang.org/issues/21381#change-113482

* Author: herwin (Herwin W)
* Status: Open
* ruby -v: ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux] and ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```
$ ruby -v -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { it + _1 }
    |             ^~ numbered parameters are not allowed when 'it' is already used

$ ruby -v --parser=parse.y -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: 'it' is already used in
-e:1: current block here
proc { it + _1 }
ruby: compile error (SyntaxError)
```
and the other way around:
```
$ ruby -v -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { _1 + it}
    |             ^~ `it` is not allowed when a numbered parameter is already used

$ ruby -v --parser=parse.y -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: numbered parameter is already used in
-e:1: current block here
proc { _1 + it}
ruby: compile error (SyntaxError)
```
It would expect the relevant part of messages to match. To be clear, I would consider this the relevant parts:
```
numbered parameters are not allowed when 'it' is already used
'it' is already used in
```
and
```
`it` is not allowed when a numbered parameter is already used
numbered parameter is already used
```




-- 
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 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
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[ruby-core:122432] [Ruby Bug#21381] Different error messages when mixing `it` and `_1` in block for Prism and parse.y

[mame (Yusuke Endoh) via ruby-core]

Issue #21381 has been updated by mame (Yusuke Endoh).

Assignee set to nobu (Nobuyoshi Nakada)

----------------------------------------
Bug #21381: Different error messages when mixing `it` and `_1` in block for Prism and parse.y
https://bugs.ruby-lang.org/issues/21381#change-113613

* Author: herwin (Herwin W)
* Status: Open
* Assignee: nobu (Nobuyoshi Nakada)
* ruby -v: ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux] and ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```
$ ruby -v -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { it + _1 }
    |             ^~ numbered parameters are not allowed when 'it' is already used

$ ruby -v --parser=parse.y -e 'proc { it + _1 }'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: 'it' is already used in
-e:1: current block here
proc { it + _1 }
ruby: compile error (SyntaxError)
```
and the other way around:
```
$ ruby -v -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) +PRISM [x86_64-linux]
-e: -e:1: syntax error found (SyntaxError)
> 1 | proc { _1 + it}
    |             ^~ `it` is not allowed when a numbered parameter is already used

$ ruby -v --parser=parse.y -e 'proc { _1 + it}'
ruby 3.4.4 (2025-05-14 revision a38531fd3f) [x86_64-linux]
-e:1: numbered parameter is already used in
-e:1: current block here
proc { _1 + it}
ruby: compile error (SyntaxError)
```
It would expect the relevant part of messages to match. To be clear, I would consider this the relevant parts:
```
numbered parameters are not allowed when 'it' is already used
'it' is already used in
```
and
```
`it` is not allowed when a numbered parameter is already used
numbered parameter is already used
```




-- 
https://bugs.ruby-lang.org/
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 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
 ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/