Redmine

When a link to another project is made using the project:identifier syntax, as described on the Wiki help syntax page, only members of the linked project see the expansion of the macro. Non-member users see the unexpanded syntax.

For instance, I am part of a "Main" project but not of its sub-projects. One of them is called "General Library" and its identifier is gen-lib.
One of my coworker in the "Main" project (who is also part of the gen-lib project) put a link to this project in the "Main" project wiki.

What he sees is:

see project General Library

What I see is:

see project project:gen-lib

I tried this today on the demo server.