Not planned Add "less-is-defined" plugin to the XF bult-in LESS compiler.

[ShikiSuen]

Othewise, there is no way to check "whether a property value is blank" within a less template (or extra less block).

GitHub - mesosphere-backup/less-is-defined: A LESS plugin for a simple function that enables you to check if variable is defined

A LESS plugin for a simple function that enables you to check if variable is defined - mesosphere-backup/less-is-defined

github.com

 

[021]

there is no way to check "whether a property value is blank" within a less template

.no, you can: https://stackoverflow.com/a/26830051

The function that you offer checks for the existence of a variable. If you access a style property, the variable will exist even if it is empty.

 

[Chris D]

Have you seen the xf-default() function? That may do what you want.

 

[ShikiSuen]

Have you seen the xf-default() function? That may do what you want.

Thanks. This one even has fallback support.