v1.7.2: math supported in line

README.md

@@ -188,6 +188,30 @@ N.B. Also available from the command palette as "Compile LESS to CSS".
 - Enables inline javascript within less files (defaults to `false`).
 - Inline JavaScript occurs for any text within backticks, e.g. `` font-weight: `10+10`px'; ``
 
+`math: { "parens-division" | "parens" | "always" | "strict" | "strict-legacy" }`
+
+- Controls the `math` option [used by the less compiler](http://lesscss.org/usage/#less-options-math).
+- The default changed to `"parens-division"` in [less v4.0.0](https://github.com/less/less.js/releases/tag/v4.0.0) (and consequently in Easy LESS v1.7.0)
+- The default for Easy LESS matches upstream, which is `"parens-division"`.
+- To restore the less v3.x behaviour, use:
+  ```json
+  {
+    "less.compile": {
+      "math": "always"
+    }
+  }
+  ```
+  ... or, using a per-file directive:
+  ```less
+  // math: always
+  ```
+  Alternatively, you can wrap your expression in parentheses:
+  ```less
+  .w-third {
+    width: (100% / 3);
+  }
+  ```
+
 ## Settings Cascade Order
 
 Settings are read and applied in the following order:

package.json

@@ -2,7 +2,7 @@
   "name": "easy-less",
   "displayName": "Easy LESS",
   "description": "Auto-compile LESS to CSS on save",
-  "version": "1.7.1",
+  "version": "1.7.2",
   "publisher": "mrcrowl",
   "engines": {
     "vscode": "^1.31.0"
@@ -95,6 +95,18 @@
               ],
               "description": "The 'browsers' argument for autoprefixer plugin (see https://github.com/ai/browserslist#queries)",
               "default": "> 5%, last 2 Chrome versions, not ie 6-9"
+            },
+            "math": {
+              "type": "string",
+              "description": "The `math` mode used by less. Default is `parens-division` (see http://lesscss.org/usage/#less-options-math)",
+              "oneOf": [
+                "parens-division",
+                "parens",
+                "always",
+                "strict",
+                "strict-legacy"
+              ],
+              "default": "parens-division"
             }
           }
         }

src/FileOptionsParser.ts

@@ -11,6 +11,7 @@ const SUPPORTED_PER_FILE_OPTS = {
   ieCompat: true,
   autoprefixer: true,
   javascriptEnabled: true,
+  math: true,
 };
 
 const ARRAY_OPTS: { [key: string]: any } = {