Incorrectly removing space

[Mottie]

If I compress the following css:

.highlight-code-c\+\+ .keyword { color:red; }

the result is:

.highlight-code-c\+\+.keyword{color:red}

The space after the second + should not be removed.

This result is seen when using http://refresh-sf.com/ and node-cssmin v0.14.0. My OS is Windows 10 64bit.

[silverwind]

Slightly reduced case:

$ echo ".c\+\+ .a {color: red}" | cleancss
.c\+\+.a{color:red}
$ echo ".c\+\+ .a {color: red}" | csso
.c\+\+ .a{color:red}
$ cleancss -v
3.4.9

[silverwind]

Filed #736.

[jakubpawlowicz]

Released as 3.4.10.