Disambiguate line breaks around atomic inlines at element boundaries

Fixes #9964

css-text-3/Overview.bs

@@ -3486,7 +3486,7 @@ Line Breaking Details</h3>
  that disappear at the line break (e.g. U+0020 SPACE),
  properties on the box directly containing that character
  control the line breaking at that opportunity.
- For [=soft wrap opportunities=] defined by the boundary between two characters,
+ For [=soft wrap opportunities=] defined by the boundary between two characters or [=atomic inlines=],
  the 'white-space' property
  on the nearest common ancestor of the two characters
  controls breaking;
@@ -3512,6 +3512,10 @@ Line Breaking Details</h3>
  word-break/word-break-break-all-inline-004.tentative.html
  word-break/word-break-break-all-inline-007.tentative.html
  word-break/word-break-break-all-inline-010.tentative.html
+
+ line-breaking/line-breaking-030.html
+ line-breaking/line-breaking-031.html
+ line-breaking/line-breaking-032.html
  </wpt>
 
  <li>
@@ -8477,6 +8481,23 @@ Recent Changes</h3>
  <wpt title="This is an authoring requirement, tests not needed">
  </wpt>
 
+ * Disambiguate soft wrap opportunities around replaced elements.
+ (<a href="https://github.com/w3c/csswg-drafts/issues/9964">Issue 9964</a>)
+
+ <blockquote>
+ For [=soft wrap opportunities=] defined by the boundary between two characters<ins> or [=atomic inlines=]</ins>,
+ the 'white-space' property
+ on the nearest common ancestor of the two characters
+ controls breaking;
+ </blockquote>
+
+ <wpt>
+ line-breaking/line-breaking-030.html
+ line-breaking/line-breaking-031.html
+ line-breaking/line-breaking-032.html
+ </wpt>
+
+
  In addition there have been some minor editorial fixes.
 
 <h3 class="no-num" id="old-changes">

css-text-4/Overview.bs

@@ -5834,7 +5834,7 @@ Line Breaking Details</h3>
  that disappear at the line break (e.g. U+0020 SPACE),
  properties on the box directly containing that character
  control the line breaking at that opportunity.
- For [=soft wrap opportunities=] defined by the boundary between two characters,
+ For [=soft wrap opportunities=] defined by the boundary between two characters or [=atomic inlines=],
  the 'white-space' property
  on the nearest common ancestor of the two characters
  controls breaking;
@@ -5860,6 +5860,10 @@ Line Breaking Details</h3>
  word-break/word-break-break-all-inline-004.tentative.html
  word-break/word-break-break-all-inline-007.tentative.html
  word-break/word-break-break-all-inline-010.tentative.html
+
+ line-breaking/line-breaking-030.html
+ line-breaking/line-breaking-031.html
+ line-breaking/line-breaking-032.html
  </wpt>
 
  <li>
@@ -13151,6 +13155,8 @@ Changes</h2>
  * Loosened requirement about not changing lines for ''text-wrap-style: balance''
  for cases with large numbers of lines.
  (<a href="https://github.com/w3c/csswg-drafts/issues/10186">Issue 10186</a>)
+ * Disambiguate soft wrap opportunities around replaced elements.
+ (<a href="https://github.com/w3c/csswg-drafts/issues/9964">Issue 9964</a>)
 
  Significant changes since the <a href="https://www.w3.org/TR/2023/WD-css-text-4-20231020/">20 October 2023 Working Draft</a> include:
  * Restored accidentally deleted “and each line after a [=forced line break=]”