In the Advanced Filters Documentation, a set of characters are defined with a
''' comma for a list and a '-' minus for a range.

but a few steps down, in the escape characters.

"the [ or ] character" is written as *[\[\]]

Shouldn't it be *[\[,\]]

if *[\[\]] works then wouldn't *[ab] work too. If commas are not required then
it should be clearly stated as such