How to incorporate ResourceFunctions to autocomplete

Question

Edit: As mentioned in the comments below, typing just ResourceFunction["Mo"] results in a list of ResourceFunctions that have a name that starts with Mo. This is good enough for me although it would be convenient if typing just Mo would show both official functions and resource functions (in another color).

I wonder if it is possible to use ToolTip, MouseOver and the likes in a way that, while writing, Mathematica proposes suggestions that incorporates ResourceFunctions rather than the current situation where it only shows official functions. Perhaps the resource functions can be colored in orange as a sort of warning that there is no guarantee that the function will work.

There is already a resource function that searches for other resource functions but it requires the Cloud and I would rather that Mathematica gives suggestions while typing.

Hence, I suppose this question has two parts:

How to get the list of all resource functions ? (Is it allowed to use web scraping to get that ? Maybe it can be extracted from the documentation center instead ?)

How to make a GUI interface that suggests elements in that list (ideally like Mathematica's autocomplete)?

Answer 1

Here's another approach to get the autocompletion working:

$ContextPath = 
  DeleteDuplicates@Append[$ContextPath, "ResourceFunctions`"];

ResourceFunction;
If[Names[#] === {},
    ToExpression["ResourceFunctions`" <> #, StandardForm, 
     Function[s, s := ResourceFunction[#], HoldAll]]
    ] & /@ 
  FunctionResource`Autocomplete`Private`$resourceFunctionNames;

SetOptions[$FrontEndSession,
 FixedPoint[
  Normal,
  Merge[Merge[Replace[{{a__Association} :> <|a|>, {___, l_} :> l}]]]@{
    GeneralUtilities`ToAssociations@
     Options[$FrontEndSession, AutoStyleOptions],
    <|AutoStyleOptions -> <|"SymbolContextStyles" -> \
<|"ResourceFunctions`" -> RGBColor[0.89, 0.37, 0.13]|>|>|>
    }
  ]
 ]

Effectively, this does the following:

1. Add the context ResourceFunctions` to the $ContextPath
2. Go through the list of resource functions (FunctionResource`Autocomplete`Private`$resourceFunctionNames), and if the symbol doesn't already exist anywhere on the $ContextPath, add a new definition of the form ResourceFunctions`function = ResourceFunction["function"]
3. Set the AutoStyleOptions for the ResourceFunctions` context to color the symbols orange

Answer 2

As mentioned in the comments below, typing just ResourceFunction["Mo"] results in a list of ResourceFunctions that have a name that starts with Mo. This is good enough for me although it would be convenient if typing just Mo would show both official functions and resource functions (in another color).

You can install any ResourceFunction persistently so that it can be used like a built-in function using ResourceFunction["PersistResourceFunction"]. For example, the following installs ResourceFunction["ShortInputForm"] persistently:

ResourceFunction["PersistResourceFunction"]["ShortInputForm"]

Now typing "Sh" in an input cell opens the autocompletion menu:

Answer 3

The answer by Alexey and Jason works. This resource function ResourceFunctionInput also provides autocompletion but with a different design.

Example :

I opted for the default installation.

In that case type esc rfi esc as in the gif below then type directly the name of the resource function.