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Item7256: Lang value needs to have a hyphen instead of an underscore

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AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Engine   Normal Closed   major 6.0.0

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Applies To:
Current State:
Waiting For:
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Released In:


The HTML tag (the outer-most tag of a TWiki page) has the lang attribute (and xml:lang attribute) whose value is from %LANG%. It's derived from {Site}{Locale} but you need to replace an underscore (_) with an hyphen (-) to be compliant with RFC:4646 (which obsoletes RFC:3066, which obsoletes RFC:1766), which is referred to by the HTML 4.01 and XML standards.

There might be a situation where {Site}{Locale} derived value is not right. To cope with that, {Site}{Lang} is introduced to specify the %LANG% value explicitly.

<html ... lang="en_US" ... >
instead of
<html ... lang="en-US" ... >
confuses browser in some cases, and disables spell checking in a text area.

-- TWiki:Main/HideyoImazu - 2013-05-13

Summary Lang value needs to have a hyphen instead of an underscore
ReportedBy TWiki:Main.HideyoImazu
Codebase ~twiki4
SVN Range TWiki-5.1.3-trunk, Fri, 12 Apr 2013, build 25760
AppliesTo Engine

Priority Normal
CurrentState Closed

Checkins TWikirev:25915
TargetRelease major
ReleasedIn 6.0.0
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Topic revision: r8 - 2013-10-15 - PeterThoeny
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