Almost undecompilable, until you remember that you can inhibit the
optimization of keeping a function parameter in a register by having an
`inline` function take a reference. Yet another function that wouldn't
have decompiled that nicely if we had restricted us to C…
Part of P0136, funded by [Anonymous].
With all the memmove()-style shifting of individual lines, there's
probably a point to reserving 20 lines per set, but only ever rendering
4 of them. We'll see once I get to decompile all of these functions.
Part of P0110, funded by [Anonymous] and Blue Bolt.