Yes, the binary "test files" were checked in. But the code that actually decompresses and executes the shell code in that file is in this m4 script, which only

Yes, the binary "test files" were checked in. But the code that actually decompresses and executes the shell code in that file is in this m4 script, which only exists in the tar archive: https://salsa.debian.org/debian/xz-utils/-/blob/debian/5.6.0-0.2/m4/build-to-host.m4 https://salsa.debian.org/debian/xz-utils/-/blob/debian/5.6.0...