HUD translation contexts

[ajtribick]

The use of CX_ in hud.cpp seems dubious:

Celestia/src/celestia/hud.cpp

Lines 1031 to 1056 in 1875701

	if (!sim->getTrackedObject().empty())
	m_overlay->printf(_("Track %s\n"), CX_("Track", getSelectionName(sim->getTrackedObject(), u)));
	else
	m_overlay->print("\n");
	Selection refObject = sim->getFrame()->getRefObject();
	switch (sim->getFrame()->getCoordinateSystem())
	{
	case ObserverFrame::Ecliptical:
	m_overlay->printf(_("Follow %s\n"),
	CX_("Follow", getSelectionName(refObject, u)));
	break;
	case ObserverFrame::BodyFixed:
	m_overlay->printf(_("Sync Orbit %s\n"),
	CX_("Sync", getSelectionName(refObject, u)));
	break;
	case ObserverFrame::PhaseLock:
	m_overlay->printf(_("Lock %s -> %s\n"),
	CX_("Lock", getSelectionName(refObject, u)),
	CX_("LockTo", getSelectionName(sim->getFrame()->getTargetObject(), u)));
	break;
	case ObserverFrame::Chase:
	m_overlay->printf(_("Chase %s\n"),
	CX_("Chase", getSelectionName(refObject, u)));
	break;

The intention appears to be to allow for translations of object names in the context of phrases like "Follow ", which may differ from the usual display form (e.g. in languages where names vary according to grammatical case). However, the lookup is being done on the "celestia" domain, not the "celestia-data" domain, and the input string is the the already-translated name. Since we do not actually generate such phrases in our translation files, these effectively become a no-op.

[375gnu]

I added this like a reminder, but never implemented this.