[FR/Q] How do I comment a line of the snippet from being included in the snippet? about yasnippet

[dericbytes]

I know a hack that works. Run elisp code that returns an empty string

# key: dm
# name: delete-me-1
# --
This
is`(progn "ignore me" "")`
a
test.

You can create your own function to make it look neater

# key: dm2
# name: delete-me-2
# --
This
is a `(yas-comment "really")`good
second example.

create elisp function (best to change function name to avoid naming conflict)

(defun yas-comment (msg)
  "Ignore MSG. Return an empty string"
    "") 

You will need to escape and unescape your quotes. You can do that by selecting the region and running a function.
http://xahlee.info/emacs/emacs/elisp_escape_quotes.html