Completion completes too much

[0x53A]

1. Area51ProviderX is the correct name

2. Now I press CTRL+Space with the cursor at the end:

[cartermp]

@0x53A is there a link to the project you can give?

[0x53A]

namespace ProviderImplementation

//[<TypeProvider>]
type Area51ProviderX () = class end


namespace Area51
type XX = ProviderImplementation.Area51Provider

set the cursor at the end of the last line, press CTRL+SPACE

[cartermp]

Seems like something gets thrown off when there's a numeric character:

module M =
    let foo12Bar = 12

M.foo12Ba <<-- caret here

ctrl+Space on the end there will result in M.foo12foo12Bar.

What's happening is that the span in item.Span below corresponds to whatever comes after the numeric char(s). Then it replaces just that span:

https://github.com/Microsoft/visualfsharp/blob/ff61ee5e69d9efa9bb278b75c5e319c6989f864c/vsintegration/src/FSharp.Editor/Completion/CompletionProvider.fs#L279

So the item being passed into GetChangeAsync has the wrong span.

[cartermp]

This should be addressed by #10500