According to Regex web test pages( https://regex101.com/ , https://regexr.com/)
the regex expression "\A.*bc" should find "bc" in the first line - and ignore bc in the second line:

In Jmp with
Regex(
"abcdef<BR />nghibcjk",
"\A.*bc/gm"
);
I get the result

... which corresponds to Regex with additional option /s (singleline):

How can I disable the singleline option?
I just found options for
