Multi-line edit of search info with a macro

Hello,

I recently discovered that the /searchcomment option exists and I wanted to use it within a macro. Sadly I can't manage to do it multi-lines as it just takes the text that's following or the last line in the macro.

As example :
/searchcomment Foo
/searchcomment Bar

Changes it to Bar

and

/searchcomment Foo
Bar

Changes it to Foo

I tried adding separator chars such as " or [ but to no avail and my search for a linebreak command or such has been fruitless.

Any help is welcome and appreciated,
Thank you.