[css-text] Clean up rules for handling of symbols and punctuation for justification

Author: fantasai

css-text/Overview.bs

@@ -1710,11 +1710,9 @@ Handling Symbols and Punctuation</h4>
 
     <p>When determining <i>justification opportunities</i>,
       a <i>typographic character unit</i> from the Unicode Symbols (S*) and Punctuation (P*) classes
-      is generally treated the same as a <i>typographic letter unit</i>:
-      in the case of ''inter-word'', as a Latin <i>typographic letter unit</i>;
-      in the case of ''distribute'', as a Han <i>typographic letter unit</i>;
-      and in the case of <a value for=text-justify>auto</a>,
-      as a <i>typographic letter unit</i> of the dominant script.
+      is generally treated the same as a <i>typographic letter unit</i> of the same script
+      (or, if the character's script property is Common,
+      then as a <i>typographic letter unit</i> of the dominant script).
 
     <p>However, by typographic tradition there may be additional rules 
       controlling the justification of symbols and punctuation.
@@ -1724,11 +1722,16 @@ Handling Symbols and Punctuation</h4>
 
     <p class="example">
       For example, there are traditionally no <i>justification opportunities</i>
-      between consecutive EM DASH U+2014, HORIZONTAL BAR U+2015, HORIZONTAL
-      ELLIPSIS U+2026, or TWO DOT LEADER U+2025 characters [[JLREQ]]; thus
-      a UA might assign these characters to a “never” prioritization level.
-      As another example, certain fullwidth punctuation characters are
-      considered to contain a <i>justification opportunity</i> in Japanese.
+      between consecutive
+      U+2014 Em Dash ‘—’,
+      U+2015 Horizontal Bar ‘―’,
+      U+2026 Horizontal Ellipsis ‘…’,
+      or U+2025 Two Dot Leader ‘‥’
+      characters [[JLREQ]];
+      thus a UA might assign these characters to a “never” prioritization level.
+      As another example, certain fullwidth punctuation characters
+      (such as U+301A Left White Square Bracket ‘〚’)
+      are considered to contain a <i>justification opportunity</i> in Japanese.
       The UA might therefore assign these characters to a higher prioritization
       level than the opportunities between ideographic characters.
 

css-text/Overview.html

@@ -1852,11 +1852,9 @@ <h4 class="heading settled heading" data-level=7.4.2 id=justify-symbols><span cl
 
     <p>When determining <a data-link-type=dfn href=#justification-opportunity title="justification opportunities">justification opportunities</a>,
       a <a data-link-type=dfn href=#typographic-character-unit title="typographic character unit">typographic character unit</a> from the Unicode Symbols (S*) and Punctuation (P*) classes
-      is generally treated the same as a <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a>:
-      in the case of <a class=css data-link-type=maybe href=#valdef-text-justify.inter-word title=inter-word>inter-word</a>, as a Latin <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a>;
-      in the case of <a class=css data-link-type=maybe href=#valdef-text-justify.distribute title=distribute>distribute</a>, as a Han <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a>;
-      and in the case of <a class=css-code data-link-for=text-justify data-link-type=value href=#valdef-text-justify.auto title=auto>auto</a>,
-      as a <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a> of the dominant script.
+      is generally treated the same as a <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a> of the same script
+      (or, if the character’s script property is Common,
+      then as a <a data-link-type=dfn href=#typographic-letter-unit title="typographic letter unit">typographic letter unit</a> of the dominant script).
 
     <p>However, by typographic tradition there may be additional rules 
       controlling the justification of symbols and punctuation.
@@ -1866,11 +1864,16 @@ <h4 class="heading settled heading" data-level=7.4.2 id=justify-symbols><span cl
 
     <p class=example>
       For example, there are traditionally no <a data-link-type=dfn href=#justification-opportunity title="justification opportunities">justification opportunities</a>
-      between consecutive EM DASH U+2014, HORIZONTAL BAR U+2015, HORIZONTAL
-      ELLIPSIS U+2026, or TWO DOT LEADER U+2025 characters <a data-biblio-type=informative data-link-type=biblio href=#biblio-jlreq title=biblio-jlreq>[JLREQ]</a>; thus
-      a UA might assign these characters to a “never” prioritization level.
-      As another example, certain fullwidth punctuation characters are
-      considered to contain a <a data-link-type=dfn href=#justification-opportunity title="justification opportunity">justification opportunity</a> in Japanese.
+      between consecutive
+      U+2014 Em Dash ‘—’,
+      U+2015 Horizontal Bar ‘―’,
+      U+2026 Horizontal Ellipsis ‘…’,
+      or U+2025 Two Dot Leader ‘‥’
+      characters <a data-biblio-type=informative data-link-type=biblio href=#biblio-jlreq title=biblio-jlreq>[JLREQ]</a>;
+      thus a UA might assign these characters to a “never” prioritization level.
+      As another example, certain fullwidth punctuation characters
+      (such as U+301A Left White Square Bracket ‘〚’)
+      are considered to contain a <a data-link-type=dfn href=#justification-opportunity title="justification opportunity">justification opportunity</a> in Japanese.
       The UA might therefore assign these characters to a higher prioritization
       level than the opportunities between ideographic characters.