Bug #20988: String literal that includes `\C-` `\M-` with `\111` wrongly parsed

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.5.0dev (2024-12-27T07:27:30Z master adbbc9109e) +YJIT +MN +PRISM [arm64-darwin22]
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[tompng (tomoya ishida)]

Prism and parse.y parses this string literal differently.

$ ./ruby -e 'p "\C-\111 \M-\111 \M-\C-\111"'
"I I I"

$ ./ruby --parser=parse.y -e 'p "\C-\111 \M-\111 \M-\C-\111"'
"\t \xC9 \x89"

[nobu (Nobuyoshi Nakada)]

https://github.com/ruby/ruby/pull/12487

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|a33c944ba8a0580322ee77b3066755f8e2c1c9b1.

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[Bug #20988] [prism] Fix escaped octal character literals