ive tried that - wich is even stranger
in this:
"\ " text
the 'text' is normal color (white)
in this:
"\" text
the 'text' is blue - like a string
both make the line that's next to it give errors . .
however, if itestse set a string "\\" and then take the first character out as a substring it works fine.
ive looked to other scripts using backslashes and they always use double or this: "\"f" (wich doesn't give errors)
it seems to me that backslash needs a extra " to close it or something
and, why would it only give a error with \f while \b works fine ?
edit: tested ingame, using either substring or "\"f" makes the ingame 'player list' (where u can set comp players & such) disepear while there isn't a error in jass.
and "\" + "f" gives errors lol ; see image:

the f seems to be no part of the string.