Bug #21764: encoding of warning for depreciated global variables is not set

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 68a7edaa81
• Backport: 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED

[nobu (Nobuyoshi Nakada)]

The aliased name should be encoded properly.

$ ruby -v -e 'def Warning.warn(s) = p(s, s.encoding); alias $分行 $/; $分行 = "\n"'
ruby 4.0.0dev (2025-11-27T12:05:45Z master 68a7edaa81) +PRISM [arm64-darwin25]
"-e:1: warning: '$\xE5\x88\x86\xE8\xA1\x8C' is deprecated\n"
#<Encoding:BINARY (ASCII-8BIT)>

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|cf12aff0593a0aa70d957b96f03df8288c025938.

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[Bug #21764] Propagate the encoding of ID to warning

[k0kubun (Takashi Kokubun)]

Backporting this causes conflicts. Could you file a backport PR to ruby_3_4 please?