use inside of a function / impl block doesn't highlight imported items

[q2p]

If you write use some::module::or::member; inside of an impl block, or a function block, VSCode won't highlight imported items, won't provide documentation on hover, and won't provide auto-complete suggestions.

Screenshot:

Example code:

pub enum FileExtensions {
	PNG,
	APNG,
	WEBP,
	WEBM,
	MP4,
	M4A,
	JPEG,
	WAVE,
	MP3,
	GIF,
	OGG,
	SWF,
	Torrent,
	MatroskaVideo,
}

impl TryFrom<&str> for FileExtensions {
	type Error = ();
	fn try_from(extension: &str) -> Result<FileExtensions, ()> {
		use FileExtensions::*;
		Ok(match extension {
			"png"     => PNG,
			"apng"    => APNG,
			"webp"    => WEBP,
			"webm"    => WEBM,
			"mp4"     => MP4,
			"m4a"     => M4A,
			"ogg"     => OGG,
			"swf"     => SWF,
			"torrent" => Torrent,
			"jpeg"    => JPEG,
			"jpg"     => JPEG,
			"gif"     => GIF,
			"wav"     => WAVE,
			"wave"    => WAVE,
			"mp3"     => MP3,
			"mkv"     => MatroskaVideo,
			_ => return Err(()),
		})
	}
}

[lnicola]

Duplicate of #1165.