Umlaut.jl is a code tracer for the Julia programming language. It lets you trace the function execution, recording all primitive operations onto a linearized tape.

👉 Umlaut.jl was started as a fork of Ghost.jl trying to overcome some of its limitations, but eventually the codebase has diverged so much that the new package was born. Although the two have pretty similar API, there are several notable differences. See Migration from Ghost for details.