[css-text-3] word-break: break-word

Author: kojiishi

css-text/Overview.bs

@@ -815,7 +815,7 @@ Line Breaking Details</h3>
 
     <pre class="propdef">
     Name: word-break
-    Value: normal | keep-all | break-all
+    Value: normal | keep-all | break-all | break-word
     Initial: normal
     Inherited: yes
     Canonical order: n/a
@@ -878,6 +878,19 @@ Line Breaking Details</h3>
         the text consists predominantly of CJK characters with only short non-CJK excerpts,
         and it is desired that the text be better distributed on each line.</dd>
 
+      <dt><dfn>break-word</dfn></dt>
+      <dd>An otherwise unbreakable sequence of <a>characters</a>
+        may be broken at an arbitrary point if
+        there are no otherwise-acceptable break points in the line.
+        Shaping characters are still shaped as if the word were not
+        broken, and grapheme clusters must stay together as one unit.
+        No hyphenation character is inserted at the break point.
+
+        The behavior is the same as 'word-wrap'/''overflow-wrap: break-word'',
+        except that this value is taken into account
+        when computing <a>min-content inline size</a>
+        as other values of this property are.
+
       <dt><dfn>keep-all</dfn></dt>
       <dd>Breaking is forbidden within “words”:
         implicit <a>soft wrap opportunities</a> between <a>typographic letter units</a> are suppressed,
@@ -920,7 +933,7 @@ Line Breaking Details</h3>
     </div>
 
     <p>When shaping scripts such as Arabic
-      are allowed to break within words due to ''break-all'',
+      are allowed to break within words due to ''break-all'' or ''break-word'',
       the characters must still be shaped
       as if the word were <a href="#word-break-shaping">not broken</a>.
 
@@ -1167,7 +1180,7 @@ Line Breaking Details</h3>
       that would otherwise overflow the line and <a>hang</a> as per <a href="#white-space-phase-2">Trimming and Positioning</a>
       must be broken after the last white space character that would fit the line,
       or after the first white space in the sequence if none would fit,
-      or before the first space in the sequence if none would fit and both ''break-word'' and ''break-spaces'' are specified.
+      or before the first space in the sequence if none would fit and both ''overflow-wrap/break-word'' and ''break-spaces'' are specified.
 
       <p class="note">This last clause is due to the fact that
       'overflow-wrap: break-words'' allows breaks between any two characters
@@ -1200,6 +1213,7 @@ Shaping Across Intra-word Breaks</h3>
   at unforced <a>soft wrap opportunities</a> within words
   (such as when breaking due to
   ''word-break: break-all'',
+  ''word-break: break-word'',
   ''overflow-wrap: break-word'',
   or when <a>hyphenating</a>)
   the characters must still be shaped