print timestamp in lua snippet

[nicolimo86]

Hi,
I have the following Ultisnip snippet and i want to translate it in Lua:

snippet -- "separator + title + tags" b
---------------------------------------------------------------------------------
## (`date +%Y%m%d`) ${1:TITLE} ${2:[#${3:tag1}]}

which when i type "--" produces this:

---------------------------------------------------------------------------------
## (20230425) This is a tile [#tag1]

For the moment the I could only rewrite it like this:

  s(
    { trig = "mytrigger" },
      fmt(
        [[
          ---------------------------------------------------------------------------------
          ## {} [{}]
        ]],
        { i(1,"<title>"), i(2,"<#tag>") },
        { delimiters = "{}"}
      )
  ),

How can I rewrite the command "(date +%Y%m%d)", which generate a timestamp just before the TITLE element?

[leiserfg]

You can use a f node with os.date"%Y%m%d"

[nicolimo86]

I reply to my own question:

  s(
    { trig = "mytrigger" },
      fmt(
        [[
          ---------------------------------------------------------------------------------
          ## {} {} [{}]
        ]],
        { extras.partial(os.date, "%Y%m%d"), i(1,"<title>"), i(2,"<#tag>") },
        { delimiters = "{}"}
      )
  ),