[css-multicol] Negative values for column-width are not allowed. Used values will be clamped to a minimum of 1px. #1741

Author: rachelandrew

css-multicol-1/Overview.bs

@@ -331,7 +331,7 @@ these two properties determine the outcome:-->
 	Inherited: no
 	Percentages: N/A
 	Media: visual
-	Computed value: the absolute length, zero or larger
+	Computed value: the absolute length
 	Animatable: as <<length>>
 	</pre>
 
@@ -347,8 +347,7 @@ these two properties determine the outcome:-->
 		<dd>
 			describes the optimal column width. The actual column width may be
 			wider (to fill the available space), or narrower (only if the
-			available space is smaller than the specified column width). Specified values
-			must be greater than 0.
+			available space is smaller than the specified column width). Negative values are not allowed. Used values will be clamped to a minimum of 1px.
 	</dl>
 
 	<div class="example">
@@ -1170,8 +1169,10 @@ This appendix is <em>informative</em>.
 
 <h3 id="changes-from-20171005">Changes from the <a href="https://www.w3.org/TR/2017/WD-css-multicol-1-20171005/">Working Draft (WD) of 5 October 2017</a></h3>
 <ul>
+	
 	<li>Replaced the HTML mock-up examples with SVG versions, as the examples were unclear. <a href="https://github.com/w3c/csswg-drafts/issues/1087">Issue 1087</a>.</li>
 	<li>Changed the value of normal for column-gap to be 1em, rather than a UA-specified length with a suggestion of 1em. <a href="https://github.com/w3c/csswg-drafts/issues/2145#issuecomment-378781507">Resolved: 4 Apr 2018</a></li>
+	<li>Clarified that negative values are not allowed for column-width, and that while 0 may be specified, used values will be clamped to a minimum of 1px. <a href="https://github.com/w3c/csswg-drafts/issues/1741#issuecomment-373091628">Resolved: 14 Mar 2018</a></li>
     <li>Changed the sentence <em>Column rules are painted in the inline content layer, but below all inline content inside the multicol element.</em> to <em>Column rules are painted just above the border of the multicol element. For scrollable multicol elements, note that while the border and background of the multicol element obviously aren’t scrolled, the rules need to scroll along with the columns.</em> <a href="https://github.com/w3c/csswg-drafts/issues/1739#issuecomment-342659978">Resolved: 7 Nov 2017</a></li>
 	<li>Under section The Multi-column Model, removed two sentences <em>That is, column boxes behave like block-level, table cell, and inline-block boxes as per CSS 2.1, section 10.1, item 2 CSS21. However, column boxes do not establish block container boxes for elements with ''position: fixed or position: absolute''.</em>. THese were replaced with a clarification about the principal box and a new example showing how abspos elements refer to the multicol container. <a href="https://github.com/w3c/csswg-drafts/issues/1738#issuecomment-342661881">Resolved: 7 Nov 2017</a></li>
     <li>Removed the sentence "To indicate where column breaks should (or should not) appear, new keyword values are introduced." and following example (Example 7 in the WD published <a href="https://www.w3.org/TR/2017/WD-css-multicol-1-20171005/">5 Oct 2017</a>) as the multicol specification no longer introduces these properties. <a href="https://github.com/w3c/csswg-drafts/issues/1966">Editorial</a></li>

css-multicol-1/issues-2011.txt

@@ -169,7 +169,8 @@ Summary:  Contradictions about whether zero is allowed for 'column-width'
 From:     David Baron 
 Comment:  https://lists.w3.org/Archives/Public/www-style/2011May/0338.html
 Comment:  https://github.com/w3c/csswg-drafts/issues/1741
-Open
+Closed:   Accepted 
+Resolved: https://github.com/w3c/csswg-drafts/issues/1741#issuecomment-373091628
 ----
 Issue 18.
 Summary:  Changed "Content in the normal flow" to "Floated or in-flow content"