Tab-completion always enters the full ID

In order to avoid either writing yourself the full ID or searching the right ID bewteen all the ones available, it can be really useful to tab-complete only a portion of the ID. This is especially true for scoreboard criterias, so this is what my example will be on, but IDs could need that as well :

What would be expected (and how it works in 1.12, at least from what I remember, but at worst there's the idea) :

• Write / paste : /scoreboard objectives add obj

• Type "m" then press Tab → "minecraft."

• Type "m" then press Tab → "minecraft.mined:"

• Type "m" then press Tab → "minecraft.mined:minecraft."

• Type "pot" then press Tab → "minecraft.mined:minecraft.potatoes"

What actually happens :

• Write / paste : /scoreboard objectives add obj

• Type "m" then press Tab → "minecraft.broken:minecraft.acacia_boat" (so if you want to target potatoes, you will have to keep pressing Tab / down arrow for an hour or so OR write everything by hand, at least until you get to "minecraft.mined:minecraft.pot")

Also, I can't remember if something like that was there in 1.12, but a useful thing would be to have additionnal suggestions that would always be at the top (except if there are results that would end before having a "non-letter character") but that would never suggest anything after the next "non-letter character".

Explanation :

• Start with nothing written for the criteria → Every ID is suggested

• Type "d". Let's imagine you have a mod called "Doors" → Suggestions will be "deathCount", then "dummy", THEN "doors" items

• Delete that "d", you actually wanted to type "minecraft" → Suggestions are "minecraft.", then all the full IDs starting by that

• Add that dot → Suggestions are "minecraft.broken:", "minecraft.crafted:", "minecraft.custom:" etc (so we have a clear list of what is possible directly after "minecraft.", instead of having to scroll down for half a day or try every letter, and more than carefully since something like "crafted" and "custom" happens), and then we have all the full IDs starting by that

• Tpye "c" → Suggestions are "minecraft.crafted:" and "minecraft.custom:", then all the full IDs starting by that (as usual)

► So, in short, nothing changes at all about which full IDs are shown, we only add what are all the categories in which they are scattered.