Bug #19025: Ripper cannot parse syntax ok code that has numbered parameters

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.2.0dev (2022-09-22T02:42:57Z :detached: 830b2e217b) [x86_64-linux]
• Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE

[tompng (tomoya ishida)]

Ruby says p { a = 0; [_1, _1 **2] } is syntax ok, Ripper says syntax error

code = 'p { a = 0; [_1, _1 **2] }'
eval(code) #=> nil (Syntax OK)
Ripper.sexp(code) #=> nil (Syntax Error)

Other similar codes. maybe not a bug

p { a = 0; [a **2] } # Syntax OK
p { a = 0; [_1 **2] } # Syntax Error
p { a = 0; [a, _1 **2] } # Syntax Error
p { a = 0; [_1, _1 **2] } # Syntax OK, Ripper.sexp says Syntax Error

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|91c004885fc75a93cadf0094fa86ec3bd0ec25f5.

---

[Bug #19025] Numbered parameter names are always local variables

[nobu (Nobuyoshi Nakada)]

• Backport changed from 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE

ruby_3_2 465eb7418d7ed91f5f0c75da77765c7f5ef8354f merged revision(s) 91c004885fc75a93cadf0094fa86ec3bd0ec25f5.

[usa (Usaku NAKAMURA)]

• Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE to 3.0: REQUIRED, 3.1: DONE, 3.2: DONE

ruby_3_1 e55dde3bdddbc595be12e7184a23e729647eb989 merged revision(s) 91c004885fc75a93cadf0094fa86ec3bd0ec25f5.

[usa (Usaku NAKAMURA)]

• Backport changed from 3.0: REQUIRED, 3.1: DONE, 3.2: DONE to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE

reverted on ruby_3_1 because the test is not passed...