Weight on alternatives/sequence/group loot table entry is ignored

I noticed a similar issue if you try to apply functions to a list of alternatives in a group table. If you attempt to apply the functions to the entire list, then the game ignores them. If you, however, apply functions to individual entries in "children", the functions are applied as normal.

For example, if I modify your examples like this:

"entries": [
  {
    "type": "alternatives",
    "weight": 9,
    "children": [
      {
        "type": "item",
        "name": "diamond"
      }
    ],
    "functions": [
      {
        "function: "set_name",
        "name": {
          "text": "Custom Name"
        }
      }
    ]
  },
  {
    "type": "item",
    "name": "emerald"
  }
]

"entries": [
  {
    "type": "alternatives",
    "children": [
      {
        "type": "item",
        "name": "diamond",
        "weight": 9,
        "functions": [
          {
            "function: "set_name",
            "name": {
              "text": "Custom Name"
            }
          }
        ]
      }
    ]
  },
  {
    "type": "item",
    "name": "emerald"
  }
]

You should notice that the loot table on the left will generate the emerald without the custom name, while the loot table on the right will set the name of the emerald. This strikes me as rather odd as functions applied to the entire pool or even the entire loot table seems to work normally.

I've recently come to the conclusion that this is intended, from code analysis. The game doesn't even define weight and quality for these entry types, so you can't really say they're ignored.

This can be closed.

Also from the 1.14 changlog

GROUP: Executes child entries when own conditions pass. Has no weight or quality.