Bug #21186: Inconsistent parsing of ?あand 0

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.5.0dev (2025-03-16T03:09:18Z master 06919949a6) +PRISM [x86_64-linux]
• Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE, 3.4: DONE

[qnighy (Masaki Hara)]

?あand 0 has inconsistent behavior between Prism and parse.y.

% ./miniruby --parser=parse.y -e "?aand 0"
-e:1: syntax error, unexpected '?'
?aand 0
./miniruby: compile error (SyntaxError)

% ./miniruby --parser=parse.y -e "?あand 0"

% ./miniruby --parser=prism -e "?aand 0"
-e: -e:1: syntax error found (SyntaxError)
> 1 | ?aand 0
    | ^ unexpected '?', ignoring it


% ./miniruby --parser=prism -e "?あand 0"
-e: -e:1: syntax error found (SyntaxError)
> 1 | ?あand 0
    | ^ unexpected '?', ignoring it

% ./miniruby --parser=parse.y -e "?\caand 0"

% ./miniruby --parser=prism -e "?\caand 0"

	parse.y	Prism
?aand 0	x	x
?あand 0		x
?\caand 0

[qnighy (Masaki Hara)]

• Description updated (diff)

Added comparison with escaped chars

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|1acfb29015dbc38fd345d8786aa78aad59f7dcd1.

---

[Bug #21186] multibyte char literal should be a single letter word

[nobu (Nobuyoshi Nakada)]

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

[alanwu (Alan Wu)]

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

3.4 backport is done. 8b491169c32621d4e74324eed08465448dfc54d5

[nagachika (Tomoyuki Chikanaga)]

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

ruby_3_3 770060f7662698ca74bc28428919a688b8fe06d2 merged revision(s) 1acfb29015dbc38fd345d8786aa78aad59f7dcd1.