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Editorial cleanup #54

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Sep 6, 2019
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Editorial cleanup #54

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0869ff8
editorial cleanup includes:
mattgarrish Sep 5, 2019
e1eec45
add caps
mattgarrish Sep 5, 2019
fa54d7d
fixes per Ivan's comments
mattgarrish Sep 6, 2019
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143 changes: 97 additions & 46 deletions common/html/bidi-example-table.html
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<section id="app-bidi-examples" class="appendix informative">
<h2>Examples for bidirectional texts</h2>

<p>This section illustrates how Unicode formatting characters can be applied to bidirectional strings, where necessary, in order to help a consumer produce the expected display. In cases where the first-strong heuristics would produce the wrong result, if the string is created with a prepended formatting character, the first-strong heuristics will produce the correct base direction for the string as a whole.</p>

<p>A right-to-left string that begins with a Latin script character should have U+200F RIGHT-TO-LEFT MARK prepended.</p>

<table>
<tr>
<td>Character order in memory:&nbsp;</td>
<td><code><bdo dir="ltr">HTML היא שפת סימון.</bdo></code></td>
</tr>
<tr>
<td>Gives incorrect display:&nbsp;</td>
<td dir="ltr">HTML היא שפת סימון.</td>
</tr>
<tr>
<td>Source code with formatting character:&nbsp;</td>
<td><code>"<bdo dir="ltr">\u200FHTML היא שפת סימון.</bdo>"</code></td>
</tr>
<tr>
<td>Gives expected display:&nbsp;</td>
<td dir="rtl">HTML היא שפת סימון.</td>
</tr>
</table>

<p>A left-to-right string that begins with a Arabic script character should have U+200E LEFT-TO-RIGHT MARK prepended.</p>

<table>
<tr>
<td>Character order in memory:&nbsp;</td>
<td><code><bdo dir="ltr">'سلام' is hello in Persian.</bdo></code></td>
</tr>
<tr>
<td>Gives incorrect display:&nbsp;</td>
<td dir="rtl">'سلام' is hello in Persian.</td>
</tr>
<tr>
<td>Source code with formatting character:&nbsp;</td>
<td><code>"<bdo dir="ltr">\u200E'سلام' is hello in Persian.</bdo>"</code></td>
</tr>
<tr>
<td>Gives expected display:&nbsp;</td>
<td dir="ltr">'سلام' is hello in Persian.</td>
</tr>
</table>
<section id="app-bidi" class="appendix">
<h2>Bidirectional Texts</h2>

<section id="app-bidi-directionality">
<h3>Item-Specific Directionality in JSON-LD</h3>

<p>Setting the direction for a natural text value is currently not possible in JSON-LD&#160;[[json-ld]]. In
order to correctly handle manifests entries containing right-to-left or bidirectional text, user agents
SHOULD identify the base direction of any given natural language value by scanning the text for the first
strong directional character.</p>

<p>In situations where the first-strong heuristics will produce the wrong result (e.g., a string in the Arabic
or Hebrew script that begins with a Latin acronym), authors can prepend a Unicode formatting character (one
of U+200E LEFT-TO-RIGHT MARK or U+200F RIGHT-TO-LEFT MARK) to the string. This would then produce the
necessary base direction when the heuristics are applied. (See <a href="#app-bidi-examples"/>.)</p>

<p>Once the base direction has been identified, user agents MUST determine the appropriate rendering and display
of natural language values according to the Unicode Bidirectional Algorithm&#160;[[!bidi]]. This could
require wrapping additional markup or Unicode formatting characters around the string prior to display, in
order to apply the base direction.</p>

<p class="note">If authors intend to use a manifest, or a manifest template, both as embedded manifest and as a
separate resource, they are strongly encouraged to set these properties explicitly to avoid interference of
the containing <code>script</code> element in case of embedding.</p>

<aside class="note">
<p>Future versions of this specification could extend the ability of manifests to identify item-specific
directionality if the JSON-LD and schema.org communities introduce such a feature.</p>

<p>For more information about localized strings on the Web, refer to [[string-meta]].</p>
</aside>
</section>

<section id="app-bidi-examples" class="informative">
<h3>Bidirectional Text Examples</h3>

<p>This section illustrates how Unicode formatting characters can be applied to bidirectional strings, where
necessary, in order to help a consumer produce the expected display. In cases where the first-strong
heuristics would produce the wrong result, if the string is created with a prepended formatting character,
the first-strong heuristics will produce the correct base direction for the string as a whole.</p>

<p>A right-to-left string that begins with a Latin script character should have U+200F RIGHT-TO-LEFT MARK
prepended.</p>

<table>
<tr>
<td>Character order in memory:&nbsp;</td>
<td>
<code>
<bdo dir="ltr">HTML היא שפת סימון.</bdo>
</code>
</td>
</tr>
<tr>
<td>Gives incorrect display:&nbsp;</td>
<td dir="ltr">HTML היא שפת סימון.</td>
</tr>
<tr>
<td>Source code with formatting character:&nbsp;</td>
<td>
<code>"<bdo dir="ltr">\u200FHTML היא שפת סימון.</bdo>"</code>
</td>
</tr>
<tr>
<td>Gives expected display:&nbsp;</td>
<td dir="rtl">HTML היא שפת סימון.</td>
</tr>
</table>

<p>A left-to-right string that begins with a Arabic script character should have U+200E LEFT-TO-RIGHT MARK
prepended.</p>

<table>
<tr>
<td>Character order in memory:&nbsp;</td>
<td>
<code>
<bdo dir="ltr">'سلام' is hello in Persian.</bdo>
</code>
</td>
</tr>
<tr>
<td>Gives incorrect display:&nbsp;</td>
<td dir="rtl">'سلام' is hello in Persian.</td>
</tr>
<tr>
<td>Source code with formatting character:&nbsp;</td>
<td>
<code>"<bdo dir="ltr">\u200E'سلام' is hello in Persian.</bdo>"</code>
</td>
</tr>
<tr>
<td>Gives expected display:&nbsp;</td>
<td dir="ltr">'سلام' is hello in Persian.</td>
</tr>
</table>
</section>
</section>
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