[csswg-drafts] [css-grid] What is the computed value for a single value <flex> track sizing?

MatsPalmgren has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== [css-grid] What is the computed value for a single value <flex> 
track sizing? ==
https://drafts.csswg.org/css-grid/#valdef-grid-template-columns-flex
"When appearing outside a minmax() notation, implies an automatic 
minimum (i.e. ''minmax(auto, <flex>)'')."

It's not clear to me if what "implies" means, is it:
1. the computed value should be minmax(auto, <flex>)
or
2. the computed value is <flex> but the used value for the min-sizing 
function is 'auto'


Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/529 using your GitHub 
account