[css-grid] Grid Placement Conflict Handling is now missing the equal start/end line case

https://drafts.csswg.org/css-grid/#grid-placement-errors
"If the placement for a grid item contains two lines, and the start
line is further end-ward than the end line, swap the two lines."

The above doesn't say what to do when the start/end lines are equal.
And I can't find any other spec text that handles this case.

The Grid Placement Conflict Handling used to say:
http://www.w3.org/TR/2015/WD-css-grid-1-20150317/#grid-placement-errors
"If grid-row-end/grid-column-end specifies a line at or before that
specified by grid-row-start/grid-column-start, it instead contributes
nothing."

Note that the "at or before" there includes equal start/end lines.

I think 9.3.1 needs to deal with equal lines.  For example by adding:
"If the start and end lines are equal, replace the end line with
either a span of 1, or for a subgrid grid item, a span the size of
the subgrid's implicit grid."


Thanks,
Mats

Received on Sunday, 4 October 2015 17:42:01 UTC