This function will compile style.less into style.css while converting the two spaces before the property into a tab. In addition, any comments that start with /** - will get a line inserted before that comment.

compile-less.bash

function compile-less() {
	lessc style.less | sed -E 's/\  (.*): (.*);/	\1: \2;/;s/(\/\*\* -)/\
\1/' > style.css
}

lesscss-tabs-not-spaces-with-comments.sh

lessc style.less | sed -E 's/\  (.*): (.*);/	\1: \2;/;s/(\/\*\* -)/\
\1/' > style.css

lesscss-tabs-not-spaces.sh

lessc style.less | sed -E 's/\  (.*): (.*);/	\1: \2;/' > style.css