See also my in-development expressions for generic logic “gates” in regular expressions: AND, OR, XOR, NOR, NAND

Some day, they might get a blog post all of their own, rather than be buried in that thread. But they are still in-development, so they’ll stay there for now.

As @alan-kilborn, I’ve already used this method. However, it quickly becomes tedious if you increase the number of expressions :-((

I think, that this other formulation is stronger and can be easily used, even if more than two expressions to match !

• (?-is)^(?=.*Expr_1)(?=.*Expr_2)(?=.*Expr_3)…(?=.*Expr_n).+ ( sensitive to case )

• (?i-s)^(?=.*Expr_1)(?=.*Expr_2)(?=.*Expr_3)…(?=.*Expr_n).+ ( insensitive to case )

For instance, the regex (?i-s)^(?=.*abc)(?=.*def)(?=.*ghi)(?=.*jkl).+ will find all files which have, at least, one line containing the four strings abc, def , ghi and jkl, in any order and whatever their case !

Best Regards

guy038

(?s)(abc).+?(def)|(?2).+?(?1)

``
Works like a charm. Thank You…
‘’

Maybe try something like this:

(?s)(abc).+?(def)|(?2).+?(?1)