Separate signals to/from red and green wires

[Koub]

[Koub] Implemented in 2.0

[mrvn]

[Koub] Implemented in 2.0

It's only partially implemented, only for combinators.

The use case on inserters to e.g. read hand content on green and set filter on red is not implemented for example. Something that's become even more pressing with Gleba.

[IsaacOscar]

You can use an arithmetic combinator to simply subtract the value of the filter signals.

Even for assembling machines with read contents + read ingredients, you could use a second empty machine to do read ingredients on.

Just saying that there are (inconvenient) workarounds...,

But we should just have little R and G checkboxes next to all the signal options (or at least the ones that don't let you choose the actual signal, e.g. the enabled setting or read working on an assembler)