From bbdbe9c7d028558440e34b720bd1299407ee368e Mon Sep 17 00:00:00 2001
From: seven-phases-max <seven.phases.max@gmail.com>
Date: Sat, 28 Feb 2015 02:07:43 +0400
Subject: [PATCH] allow underscore in dimension unit

---
 lib/less/parser/parser.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/less/parser/parser.js b/lib/less/parser/parser.js
index df309789b..f48102679 100644
--- a/lib/less/parser/parser.js
+++ b/lib/less/parser/parser.js
@@ -484,7 +484,7 @@ var Parser = function Parser(context, imports, fileInfo) {
                         return;
                     }
 
-                    var value = parserInput.$re(/^([+-]?\d*\.?\d+)(%|[a-z]+)?/i);
+                    var value = parserInput.$re(/^([+-]?\d*\.?\d+)(%|[a-z_]+)?/i);
                     if (value) {
                         return new(tree.Dimension)(value[1], value[2]);
                     }