missing data - "\ special in class?", "Ranges"

[sisima70]

"\ special in class?", and "Ranges" are empty for "POSIX extended (ERE)".
I assume that they're the same as for "POSIX (BRE)", but this should be explicitly specified.

In addition "Ranges" for "ViM" seem to imply that '' is special in character classes, but I'm not sure if that's intended.
If it is, "'' is special in character classes" should be said explicitly in the appropriate cell of the table.

[remram44]

Thanks, I completed the line. \ is special for ViM but not ERE (like BRE), you are right.

I am not sure what you mean about "?