Fix bug: if the end line is comments, the modifyVars option will have no effect

[chenboxiang]

If the end line is comments, the modifyVars option will have no effect.

[tkellen]

Thanks for the PR @chenboxiang! Is this bug present upstream in less itself? If so, it should be fixed there, not here.

[chenboxiang]

@tkellen OK, I will try it later.

[chenboxiang]

@tkellen This problem is not the less parser's bug.
Here is an example: the test.less file source code:

@height: 20px;
.cls {
    height: @height;
}
// comments

now execute the command:

bin/lessc test.less --modify-var="height=30px"

the expected result is the @height will transform to 30px, but it is still 20px.

The reason is the variables append to the less source tail without LF. The transformed source:

@height: 20px;
.cls {
    height: @height;
}
// comments@height:30px;

So the variables will be resolved to comments.

The same problem is also in lessc command. And I pull a request to less too, it is here.

[tkellen]

Great catch! I'd be happy to merge and publish this, but before I can I need you to sign our CLA:
http://dojofoundation.org/about/claForm

[chenboxiang]

@tkellen Thank you very much! I signed the CLA yet.

[tkellen]

Published as 0.11.1!

[chenboxiang]

Great!