While searching around in acrobatfaq.com I noticed that at the bottom of List/Set.icontains(“pattern”) the operator changes from icontains to contains and wondered if that was intentional or a possible error?
Use a ! prefix to the query argument:
!$MyList.icontains("Tuesday")
Use of parentheses after the !, around the query, can assist Tinderbox's parsing:
!($MyList.contains("Tuesday"))
No sadly, it’s a typo by the aouthor (me!). Now fixed: see here.
Tinderbox is a toolbox and there is much to document and this author is humanly fallible. So, if it looks wrong do ask. I like to think there are few factual errors but once found reported, they’re easy to fix.