This is sort of a repost of a reply to my own post previously, sorry if that is bad practice.
I would just really like to know, is there a way to write each pass by myself, like frag and vert programs like in “the good ol days” without getting it commented out?
Yes! Exactly like that! And that was how I originally learned shader programming some years ago.
But now it seems like Unity comments out such shaders if you try to actually do anything with lights in it 
The problem is that I would like to make a vertex-lit shader, so I can work with several lights in one pass, but the compiler seems boobietrapped with triggers for this “You should do SURFACE shaders!”-thing
Strange… I never got that kind of error and I even made my own api for lighting, so I don’t use surface shaders at all… mind posting the exact thing?
I’m don’t know the exact triggers, but I am fairly certain that they include deprecated tags and other things that aren’t supported any more. Vertex/fragment shaders are fully supported, though. Can you post a shader that gets commented out when you save it?
Surprised by hearing your replies, I installed Unity4 here at home and tried to open up the shader that gave me problems.
I worked in Unity3 at home, and unity4 at school, and it was while working with unity4 that I got the problem.
So seems to be because I misused some tags and putting LIGHTING_COORDS wrong.
So yea, I got it working now, but I don’t have any shadows or light attenuation