$spacing not overwriteable

[robinsandborg]

$spacing is defined as:
$spacing: $line-height;

If we try to overwrite $spacing in the settings, it will revert to whatever $line-height is. Should we add a !default to this one?

[macbruker]

I think that would be nice.

I am thinking it would be nice to disconnect $spacing and $line-height completely. It makes sense for those cases where you are working with unitless values for line-height.

[robinsandborg]

I think it’s a useful default though; having ´$spacing´ and ´$line-height´ set to the same number should contribute to a good vertical rythm.

The ´font-size´ include converts the pixel value of $line-height to a unitless value, so no worries there.