Yes!

It is now crystal clear that we were talking about the goat whilst you were talking about the cart. It is also possible that you might be trying to push Patchmanager beyond its limits.

Perhaps it would help if you first tried to explain what you wanted to achieve. By the looks of it, you are trying to replace one file with another. This is not what unified_diff.patch is for: it is for replacing the files content of a text file.

For example, you have a file containing this text:

You want to change it to:

The patch file would look something like this (made up by hand, I did not bother creating and diffing the files):

Meaning, "remove one line from line:4, add one line from line 4", with providing the contents of those removed and added lines.

A unified diff can contain lists of differences for multiple files, all following a similar format. Have you done some background reading and/or checked any existing patches as I suggested?

In your case, /usr/share/fonts/roboto is a directory, not a file. A unified diff cannot work. Perhaps you meant something like:

Or perhaps you meant something completely different. An explanation of what you are trying to achieve would be welcome.