I tried to use the ‘slash’ syntax with border-radius to produce asymetric corners but I got a divide by zero error in t3/includes/lessphp/less/less.php at line 2018 (v2.0.2). For me this raises two issues:
1 Despite the ‘slash’ syntax variant of border-radius being valid, it is easy to work around by specifying each corner individually with regular syntax (works fine).
2 The php crash could presumably occur randomly whenever a slash is included, whether valid or not. This would make debugging a large less file very difficult. I made the following change to prevent the crash. It didn’t make the border-radius statement compile correctly but I can live with that.
case '/': return $a / $b;
to
case '/': return $b ? ($a / $b) : $a;
Regards
Phil