Less aggressive compilation with CSS3 calc

Question

The Less compilers that I\'m using (OrangeBits and dotless 1.3.0.5) are aggressively translating

body { width: calc(100% - 250px - 1.5em); }

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Answer 1

Less no longer evaluates expression inside calc by default since v3.00.

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Original answer (Less v1.x...2.x):

Do this:

body { width: calc(~"100% - 250px - 1.5em"); }

In Less 1.4.0 we will have a strictMaths option which requires all Less calculations to be within brackets, so the calc will work "out-of-the-box". This is an option since it is a major breaking change. Early betas of 1.4.0 had this option on by default. The release version has it off by default.