:80 {
	log

	vars foo foo

	log_append const bar
	log_append vars foo
	log_append placeholder {path}

	log_append /only-for-this-path secret value
}
----------
{
	"apps": {
		"http": {
			"servers": {
				"srv0": {
					"listen": [
						":80"
					],
					"routes": [
						{
							"handle": [
								{
									"foo": "foo",
									"handler": "vars"
								}
							]
						},
						{
							"match": [
								{
									"path": [
										"/only-for-this-path"
									]
								}
							],
							"handle": [
								{
									"handler": "log_append",
									"key": "secret",
									"value": "value"
								}
							]
						},
						{
							"handle": [
								{
									"handler": "log_append",
									"key": "const",
									"value": "bar"
								},
								{
									"handler": "log_append",
									"key": "vars",
									"value": "foo"
								},
								{
									"handler": "log_append",
									"key": "placeholder",
									"value": "{http.request.uri.path}"
								}
							]
						}
					],
					"logs": {}
				}
			}
		}
	}
}