frontmatter values with spaces?

[Oneechan69]

I have lots of daily notes in Obsidian with the frontmatter values "Date Created" and "Date Modified", but it seems there isn't a way to specify icons for them in highlight_groups.

[ray-x]

You should be able to use the following setup

require('yamlmatter').setup({
  icon_mappings = {
   ['Date Created'] = '',
    idea = '',
    default = '󰦨',
  },
})