less/less.js — pull request #1788 by SomMeri (2014-01-08 12:28:52+00:00)
Title: Added `+_` for space separated properties merge.

Pull request for #1756.

Since everybody seems to consider `+_` lesser evil, I implemented it. Merging operator are added in order they are written in, so this:
```
* {
transform+: first;
transform+_: spaced;
transform+: comma;
}
```

compiles into:
```
* {
transform: first spaced, comma;
}
```