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Normative: Revert U+2212 (Unicode minus sign) as a valid character in timezone offsets #3334

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Jul 17, 2024
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Normative: Revert U+2212 (Unicode minus sign) as a valid character in timezone offsets #3334

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47 changes: 6 additions & 41 deletions spec.html
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Original file line number Diff line number Diff line change
Expand Up @@ -33183,48 +33183,14 @@ <h1>Time Zone Offset String Format</h1>
<p>
ECMAScript defines a string interchange format for UTC offsets, derived from ISO 8601.
The format is described by the following grammar.
The usage of Unicode code points in this grammar is listed in <emu-xref href="#table-time-zone-offset-string-code-points"></emu-xref>.
</p>

<emu-table id="table-time-zone-offset-string-code-points" caption="Time Zone Offset String Code Points">
<table>
<thead>
<tr>
<th>
Code Point
</th>
<th>
Unicode Name
</th>
<th>
Abbreviation
</th>
</tr>
</thead>
<tr>
<td>
`U+2212`
</td>
<td>
MINUS SIGN
</td>
<td>
&lt;MINUS>
</td>
</tr>
</table>
</emu-table>

<h2>Syntax</h2>
<emu-grammar type="definition">
UTCOffset :::
TemporalSign Hour
TemporalSign Hour HourSubcomponents[+Extended]
TemporalSign Hour HourSubcomponents[~Extended]

TemporalSign :::
ASCIISign
&lt;MINUS&gt;
ASCIISign Hour
ASCIISign Hour HourSubcomponents[+Extended]
ASCIISign Hour HourSubcomponents[~Extended]

ASCIISign ::: one of
`+` `-`
Expand Down Expand Up @@ -33298,9 +33264,9 @@ <h1>
<emu-alg>
1. Let _parseResult_ be ParseText(_offsetString_, |UTCOffset|).
1. Assert: _parseResult_ is not a List of errors.
1. Assert: _parseResult_ contains a |TemporalSign| Parse Node.
1. Let _parsedSign_ be the source text matched by the |TemporalSign| Parse Node contained within _parseResult_.
1. If _parsedSign_ is the single code point U+002D (HYPHEN-MINUS) or U+2212 (MINUS SIGN), then
1. Assert: _parseResult_ contains a |ASCIISign| Parse Node.
1. Let _parsedSign_ be the source text matched by the |ASCIISign| Parse Node contained within _parseResult_.
1. If _parsedSign_ is the single code point U+002D (HYPHEN-MINUS), then
1. Let _sign_ be -1.
1. Else,
1. Let _sign_ be 1.
Expand Down Expand Up @@ -50091,7 +50057,6 @@ <h1>Number Conversions</h1>
<emu-annex id="sec-time-zone-offset-string-format">
<h1>Time Zone Offset String Format</h1>
<emu-prodref name="UTCOffset"></emu-prodref>
<emu-prodref name="TemporalSign"></emu-prodref>
<emu-prodref name="ASCIISign"></emu-prodref>
<emu-prodref name="Hour"></emu-prodref>
<emu-prodref name="HourSubcomponents"></emu-prodref>
Expand Down
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