[css-inline-3] Mark negative half-leading as an issue for line-sizing: normal. w3c#3199

Author: fantasai

css-inline-3/Overview.bs

@@ -662,6 +662,7 @@ Line Sizing Containment: the 'line-sizing' property</h3>
 	</pre>
 
 	ISSUE: This is a rough draft of a proposal, and has not yet been approved by the CSSWG.
+	It is drafted here to promote discussion.
 	See discussion in <a href="https://github.com/w3c/csswg-drafts/issues/3199">Issue 3199</a>, <a href="https://lists.w3.org/Archives/Public/www-style/2011Mar/0364.html">Hyatt's message</a>, and <a href="https://dev.w3.org/cvsweb/~checkout~/csswg/css3-linebox/Attic/Overview.html?rev=1.5;content-type=text%2Fhtml#LineStacking">dbaron's proposal</a>.
 
 	This property controls the method by which line boxes are sized,
@@ -694,8 +695,10 @@ Line Sizing Containment: the 'line-sizing' property</h3>
 			Half-leading is inserted inside the <a>content box</a> edges,
 			rather than overlapping the padding/border/margin areas.
 			However, positive half-leading is only applied to the <a>root inline box</a>.
-			Negative half-leading is applied to all inline boxes,
-			reducing the size of the <a>content box</a> as needed.
+			<!-- Negative half-leading is applied to all inline boxes,
+			reducing the [=outer size=] as needed. -->
+
+			ISSUE: Handle negative half-leading somehow. Maybe apply it to the margin edge?
 
 			Note: This will give consistent line spacing
 			as long as there is some amount of leading added,