to be more precise, the way we code-gen "literal" qregex nodes with subtype "ignoremark+ignorecase" will only ever check the ordbaseat of the first character in the literal against the haystack.
- [perl #128875] [BUG] Ignore mark + Ignore case = Ign... via RT
- Re: [perl #128875] [BUG] Ignore mark + Ignore c... Timo Paulssen
- [perl #128875] [BUG] ignoremark + ignorecas... Samantha McVey via RT