Bug #21137: Compound assignment operator with "it" parsed differently between parse.y and prism

• Status: Closed
• Assignee: prism
• Target version: -
• ruby -v: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +PRISM [arm64-darwin21]
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE

[kinoppyd (Yasuhiro Kinoshita)]

# parse.y OK: no error
# prism   OK: no error
proc { it = 1 }

# parse.y OK: no error
# prism   OK: no error
proc { it = it + 1 }

# parse.y OK: no error
# prism   NG: syntax errors found (SyntaxError)
proc { it += 1 }

[nobu (Nobuyoshi Nakada)]

• Has duplicate Bug #21138: The modifier expression with "it" is parsed differently in parse.y and Prism, which is unexpected in both. added

[nobu (Nobuyoshi Nakada)]

• Assignee set to prism

[kddnewton (Kevin Newton)]

• Status changed from Open to Closed

Applied in changeset git|ee181d1bb74ef82d6507c411a6aff10d1bf37aa3.

---

[ruby/prism] Fix up it indirect writes

Fixes [Bug #21137]

https://github.com/ruby/prism/commit/ca493e6797

[kddnewton (Kevin Newton)]

• Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN to 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED

[k0kubun (Takashi Kokubun)]

• Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED to 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE

ruby_3_4 62f736f23e9099c5aa29975dc7fbe2fe8c40b5b2.

[nobu (Nobuyoshi Nakada)]

• Related to Bug #21139: Prism and parse.y parses `it = it` differently added