snippet snip "Create new snippet" snippet ${1:Name} "${2:Description}" ${3:Options} $4 `!p snip.rv = "endsnippet"` $0 endsnippet snippet helloworld "A simple hello world snippet" b ${0:`!p if not snip.c: snip.rv = f'snippet helloworld "A simple hello world snippet" b\n{t[0]}\nendsnippet'`} endsnippet