Spotted by @pierreganty (#478), thank you

Spotted by @sw17ch, thank you.

Spotted by @sw17ch, thank you.

Previously this gave:
```
; ./build/bin/re -r literal -G 3 abc
; ./build/bin/re -r literal -G 4 abc
abc
;
```
and now -G 3 does construct "abc" (not including the newline, which is a property of the printing, not of the constructed string):
```
; ./build/bin/re -r literal -G 3 abc
abc
; ./build/bin/re -r literal -G 4 abc
abc
;
```

and:
```
; ./build/bin/re -r native -G 3 '^x+$'
x
xx
xxx
```

Spotted by @pierreganty (#478), thank you

This doesn't help for #317, but whatever the solution is there, asserting about it is the wrong thing to do.

Spotted by @classabbyamp, thank you

I have extremely broken the iprange example. I am very unsure what's going on with this program.