Method handle_tab

src/sys/prompt.rs:378–422

Handle tab key

(&mut self)

	// Handle tab key
	fn handle_tab(&mut self)
	{
		self.histupdate();
		let (bs, pos) = match self.compl.pos
		{
			Some(pos) =>
			{
				let n = self.compl.items.len();
				if n == 1
				{
					self.compupdate();
					return;
				}

				let bs = self.compl.items[pos].chars().count();
				if pos + 1 < n
				{
					(bs, pos + 1)
				}
				else
				{
					(bs, 0)
				}
			},

			None =>
			{
				let ln: String = self.ln.iter().collect();
				self.compl.items = (self.compl.completer)(&ln);
				if !self.compl.items.is_empty()
				{
					(0, 0)
				}
				else
				{
					return
				}
			},
		};

		let erase = "\x08".repeat(bs);
		let complete = &self.compl.items[pos];
		print!("{}{}", erase, complete);
		self.compl.pos = Some(pos);
	}


	// Handle up key