Function C_TabComplete

source/common/console/c_tabcomplete.cpp:159–244

}

void C_TabComplete (bool goForward)
{
	unsigned i;
	int diffpoint;

	auto CmdLineText = CmdLine.GetText();
	if (!TabbedLast)
	{
		bool cancomplete;


		// Skip any spaces at beginning of command line
		for (i = 0; i < CmdLineText.Len(); ++i)
		{
			if (CmdLineText[i] != ' ')
				break;
		}
		if (i == CmdLineText.Len())
		{ // Line was nothing but spaces
			return;
		}
		TabStart = i;

		TabSize = (int)CmdLineText.Len() - TabStart;

		if (!FindTabCommand(&CmdLineText[TabStart], &TabPos, TabSize))
			return;		// No initial matches

		// Show a list of possible completions, if more than one.
		if (TabbedList || con_notablist)
		{
			cancomplete = true;
		}
		else
		{
			cancomplete = C_TabCompleteList ();
			TabbedList = true;
		}

		if (goForward)
		{ // Position just before the list of completions so that when TabPos
		  // gets advanced below, it will be at the first one.
			--TabPos;
		}
		else
		{ // Find the last matching tab, then go one past it.
			while (++TabPos < (int)TabCommands.Size())
			{
				if (FindDiffPoint(TabCommands[TabPos].TabName, &CmdLineText[TabStart]) < TabSize)
				{
					break;
				}
			}
		}
		TabbedLast = true;
		if (!cancomplete)
		{
			return;