With OSGi tool bnd
If bnd.bnd
file has
-buildpath: mod.base,\
mod.common,\
...
those lines will be as one-liner, though wrapped at 72 potion. That make output harder to read.
Require-Bundle: mod.base,mod.common,...
How to tell bdn to make resulted MANIFEST.MF to have one line per Bundle-ClassPath and RequireBundle entries
As much as I saw in the source of bnd, it creates a java.util.jar.Manifest object. Serializing the content to disk is made with ManifestUtil, because of some limitation with the output of the Manifest class provided by Java.
I use an online tool when when I want to read the OSGi headers: https://robinst.github.io/jar-manifest-formatter/
Although this does not format Require-Bundle, Provide-Capability and Require-Capability headers, I think it should not take more than 10 minutes for you to change the javascript file to format those, too. If you do that, I suggest that you should send a PR for robinst ;).
UPDATE: It can already, thanks to Robin