Couchdb can't find main.js when running under a path that contains a directory name starting with two or more dashes

When coucdb runs in directory below any directory whose name starts with two or more dashes, say

/some/path/---foo/couch

It will error when it tries to call main.js with:

"could not open script file /path/some/-foo/couch/share/server/main.js"

Note that the first two dashes have been dropped.