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[SR-3582] Counting emoji flags #46167

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swift-ci opened this issue Jan 9, 2017 · 2 comments
Closed

[SR-3582] Counting emoji flags #46167

swift-ci opened this issue Jan 9, 2017 · 2 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. standard library Area: Standard library umbrella

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@swift-ci
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swift-ci commented Jan 9, 2017

Previous ID SR-3582
Radar None
Original Reporter S2dent (JIRA User)
Type Bug
Status Resolved
Resolution Invalid
Environment

MacOSX iOS

Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Bug
Assignee None
Priority Medium

md5: 3ed43ec703bc4462ba30ecf03b6067e2

is duplicated by:

  • SR-4077 Consecutive flag emoji are treated as a single character

relates to:

  • SR-6076 [String] var count: String.CharacterView.IndexDistance { get } returns a wrong value on Linux when "Regional Indicator Symbols" are contained.

Issue Description:

Flags are not distinguished in characters.count

Example:

 // Here are three country flags emojis
let flags = "\u{1F1E6}\u{1F1E8}\u{1F1F7}\u{1F1F4}\u{1F1F7}\u{1F1FA}"
flags.characters.count // 1

No matter how many flags, or in which order, the result is always 1.
@belkadan
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This is "correct" (standards-compliant) behavior in Unicode 8, and will be "fixed" when Swift upgrades to implement Unicode 9.

@belkadan
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For more information, see UAX #29 in Unicode 8 and Unicode 9.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. standard library Area: Standard library umbrella
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@belkadan @swift-ci