mathquill#797 less 3.0.1 breaks build because @var:; is non standard

electriccode · electriccode · commit 36e20d60cdb7 · 2018-03-29T00:27:09.000+05:30
less/less.js#2911
diff --git a/src/css/font.less b/src/css/font.less
@@ -1,4 +1,4 @@
-@omit-font-face:;
+@omit-font-face:~"";
 .font-face;
 .font-face() when not (@omit-font-face) {
   @font-face {
@@ -7,7 +7,7 @@
   }
 }
 
-@basic:;
+@basic:~"";
 .font-srcs() when not (@basic) {
   src: url(fonts/Symbola.eot);
   src:

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-@omit-font-face:;`
	`1`	`+@omit-font-face:~"";`
`2`	`2`	`.font-face;`
`3`	`3`	`.font-face() when not (@omit-font-face) {`
`4`	`4`	`@font-face {`
`@@ -7,7 +7,7 @@`
`7`	`7`	`}`
`8`	`8`	`}`
`9`	`9`
`10`		`-@basic:;`
	`10`	`+@basic:~"";`
`11`	`11`	`.font-srcs() when not (@basic) {`
`12`	`12`	`src: url(fonts/Symbola.eot);`
`13`	`13`	`src:`