Option source-map-map-inline produces an empty file

[nicoschoenmaker]

Using the --source-map-map-inline option produces an empty file.

Steps to reproduce:

• Go to an empty directory
• Make sure we have node + less

wget https://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-x64.tar.xz
tar -xf node-v7.1.0-linux-x64.tar.xz
./node-v7.1.0-linux-x64/bin/node ./node-v7.1.0-linux-x64/bin/npm install less
echo ".red { color: blue; }" > foo.less

• Process the just created foo.less file:

./node-v7.1.0-linux-x64/bin/node node_modules/.bin/lessc foo.less --source-map-map-inline

Expected

.red {
  color: blue;
}
/*# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImZvby5sZXNzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBO0VBQU8sV0FBQSIsImZpbGUiOiJmb28uY3NzIn0= */

Actual result: only a newline

Sidenotes:

• Works fine without the --source-map-map-inline parameter
• This was already reported in option source-map-map-inline produces an empty file #2961, but closed since the author found a workaround. Which is to specify the destination:

./node-v7.1.0-linux-x64/bin/node node_modules/.bin/lessc foo.less --source-map-map-inline foo.css

Why is it a bug? In the docs the destination (foo.css) is specified as an optional argument. For my use case it would be a lot faster if I did not have to create a temporary file.

[megahallon]

I believe you can also close #2897 as it is described now, however you will also get this issue (TypeError on path) when doing: lessc --source-map=foo foo.less

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[nicoschoenmaker]

This issue was fixed with #2988