Following the remarkable success of Sinn Fein in the recent local and European contests in the Republic and in reasonable anticipation of further gains in the next general election, speculation is already rife on the party's place in probable coalition groupings.
Its untested economic policies (the main basis of its popular appeal) have been constantly criticised by its opponents. But there are other features of the organisation which prospective partners would do well to examine closely, not least its rhetoric and terminology.
For example, nowadays its distinction between "republican" and "nationalist" is spurious. Not only that, everyone in the Republic is a "republican" now and the distinctive and exclusive use of the term by any political party (including Fianna Fail) is meaningless if not hypocritical.
Every citizen in the south lives in a republic, we subscribe to a non-monarchical form of government, we are in favour of territorial unity by peaceful means (just like Sinn Fein) and we profess the principles of social equality and civil rights.
In short, we satisfy all the criteria of being "republican". So how can Sinn Fein constantly claim to be more republican than the rest of us? Go ahead, ask them.
Another peculiarity of Sinn Fein modes of speech is the refusal to accept the legal forms and common usage of "Northern Ireland" and "the Republic of Ireland" as the correct descriptions of the two political entities that comprise the island.
Sinn Feiners refer to "the North", "the North of Ireland", "up here" and "the Six Counties", but never to "Northern Ireland". Similarly, they use "the South", "the 26 counties", "down here" or, if they are really being naughty, "the Free State", but never "the Republic".
In a recent hour-long interview with Marian Finucane on RTE radio, Martin McGuinness (below) employed the usual verbal evasions with remarkable agility in order to avoid giving its proper description to the state of which he has the honour to be Deputy First Minister.
In the tortured theology of Sinn Fein nationalism, accepting and using "Northern Ireland" and "Republic of Ireland" would be to accept partition and, even worse, to compromise and betray "the true republic, as in 1916 established".
Irony of ironies, Sinn Fein played no part at all in Easter 1916. All this juvenile, fantasy-land stuff is an indication of arrested political development on the part of Sinn Fein. And it raises the large question which should be ceaselessly put to Sinn Fein's leadership – if you can't bring yourself to describe the state properly, do you really recognise it at all? Are you not still "a slightly constitutional party", as Sean Lemass styled Fianna Fail in 1928?
Gerry Adams has spoken of popular support for "an historic and inclusive (buzz words!) accommodation between orange and green in a new republic". But this is no more than aspirational waffle – a sentimental fantasy since the heyday of Thomas Davis's rhetoric in the 1840s.
Orange has shown no interest in any "accommodation" with green, whether in a Home Rule arrangement or in a republic, old or new. If such an agreement had been possible, partition would long since have ceased, and indeed would never have been necessary in the first place.
Perhaps nationalists in general, and not just Sinn Fein, should radically re-examine the assumption that partition was, and remains, an evil in itself, and rather face up to the unpalatable historical truth that some form of partition, rough and ready though it turned out to be, was necessary to deal with the two conflicting nations in Ireland.
In the insightful phrase of the late distinguished scholar and commentator Liam de Paor (no West Brit he), partition was a condition of, rather than a flaw in, Irish independence.
At this stage in Northern Ireland, surely what is needed most is a long period of peaceful community relations and the slow building of reconciliation. Incredibly, what Sinn Fein is promoting is a referendum on Irish unity, a pointless, regressive and destabilising exercise.
Adams said last month, on Morning Ireland on RTE radio, that "a strategic plan for Irish unity" will be a red-line condition for any participation in government. A red alert for prospective partners, more like, and the very negation of a peace process.
Prospective coalition partners will inevitably be concerned with Adams's past, though by now we are all fed up with the boring routine – the stock question and the flat denial despite the overwhelming evidence to the contrary. The Sinn Fein faithful are conditioned to accept whatever the leader says, and indeed they don't seem to care whether he was in the IRA or not.
In any case, the dead-end question-and-answer is now pointless because of the significant statement that Adams has recently made – more than once – and which has been all but ignored: "I have never dissociated myself from the IRA and I never will."
Together with his frequently expressed admiration for Bobby Sands (right) and for the role of the IRA volunteer in general, this unambiguous statement tells us all we want to know about Adams's true allegiances. Despite his belated expressions of support for the security forces of the state, he remains true to his "Oglaigh na hEireann", the Provisional IRA. If this doesn't give other party leaders in the Republic pause, it certainly should.
Elated by their electoral success, Sinn Fein leaders have been stepping up a largely unchallenged version of their recent history. Once upon a time "revisionist" was their favourite term of abuse, but now they are dab hands at revisionism themselves. Political opponents and the media rarely question the party's presentation of past events, either because they are not sure of their ground or because they fear the moral blackmail of being charged with putting the peace process at risk. "Hit me now with the peace process in me arms."
Sinn Fein presents itself as the chief custodian and proper interpreter, if not the only begetter, of the peace process. The armed struggle is rarely mentioned nowadays or the fact that the IRA negotiated for peace only when its war campaign ran into the ground.
Instead, Sinn Fein is pushing the origins of the peace process ever backwards in time so that when you thought they were supporting "the armed struggle" they were really working for peace. In programme presented by Ursula Halligan on TV3 last year, McGuinness looked into the camera with evangelical earnestness and declared he "would die for the peace process, for peace". But what happens if the ultimate terms of the peace process are not to Sinn Fein's liking?
The party's breathtaking revisionism extends to the causes that it now gives for the conflict. IRA culpability, the sectarian dimension and the statistics of responsibility for deaths are ignored and "the armed struggle" becomes a great campaign for equality and civil rights – which, in fact, were conceded quite early on.
And let us not forget that what is now paraded as "peace-making" was actually the strategy of maximising Sinn Féin's strength while using IRA decommissioning as a bargaining tool.
IRA atrocities are, they say, a matter for regret, but they are presented as an inevitable part of conflict and seem to happen almost as impersonal forces. Euphemisms abound. In his long interview with Marian Finucane in May, McGuinness spoke of the "loss" of Lord Mountbatten (she did not demur at this) as if it had been a regrettable oversight.
Another frequent Sinn Fein line is the attribution of blame for obstacles and setbacks to British "securocrats" behind the scenes. Who are these faceless, sinister forces? Why are their machinations allowed to threaten peace? Why do they want to destroy the peace process? No answers are sought or given for these questions.
Sinn Fein may or may not believe its own propaganda. But it behoves opponents to subject it to close scrutiny. If prospective coalition partners ignore it, they do so at their peril – indeed, at our peril.
John A Murphy is Emeritus Professor of Irish History at University College Cork and a former independent member of the Irish Senate. A longer version of this article appeared in the Irish Times