- From: Boris Zbarsky <bzbarsky@MIT.EDU>
- Date: Wed, 26 May 2010 22:57:12 -0400
- To: Michael Day <mikeday@yeslogic.com>
- CC: www-svg@w3.org
On 5/26/10 9:31 PM, Michael Day wrote: >> [1] >> http://dev.w3.org/SVG/profiles/1.1F2/publish/types.html#DataTypeLength > > In this spec length is defined like this in style sheets: > > length ::= number (~"em" | ~"ex" | ~"px" | ~"in" | ~"cm" | ~"mm" | ~"pt" > | ~"pc")? > > What are the ~ characters for, and why is the unit still optional? No idea on the former. On the latter, presumably because the _grammar_ allows not having a unit, since the requirement to have it is a per-property restriction in this spec. Arguably it would be better to have a separate CSSlength unit if this approach is taken. -Boris
Received on Thursday, 27 May 2010 02:57:49 UTC