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Clarify LWSP in color expressions #323

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Jan 23, 2018
Merged

Clarify LWSP in color expressions #323

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f3bb5bd
Clarify LWSP in color expressions (#322)
palemieux Jan 10, 2018
b3aef1d
Merge branch 'master' into issue-322-clarify-LWSP-in-color-expression
palemieux Jan 23, 2018
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10 changes: 8 additions & 2 deletions spec/ttml1.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -6203,8 +6203,8 @@ defined by <bibref ref="srgb"/>.</p>
&lt;color&gt;
: "#" rrggbb
| "#" rrggbbaa
| "rgb" "(" r-value "," g-value "," b-value ")"
| "rgba" "(" r-value "," g-value "," b-value "," a-value ")"
| "rgb(" r-value "," g-value "," b-value ")"
| "rgba(" r-value "," g-value "," b-value "," a-value ")"
| <loc href="#style-value-namedColor">&lt;namedColor&gt;</loc>

rrggbb
Expand All @@ -6226,6 +6226,12 @@ non-negative-integer
</tr>
</tbody>
</table>
<note role="clarification">
<p>While permitted, the use of linear whitespace (LWSP) around the comma delimiters in
<code>&lt;color&gt;</code> expressions is not recommended. The rationale for this recommendation
is that some existing processors may not be tolerant of this usage.
</p>
</note>
<p>When expressing RGB component values, these values are considered
to <phrase role="strong">not</phrase> be premultiplied by alpha.</p>
<p>For the purpose of performing presentation processing such that
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