as far as vs unless and until its

Some examples from the web:

• Instructions shall be given as far as feasible by pictograms.
• Anyway, as far as I'm concerned, I followed the instructions.
• That money, as far as we're both concerned...
• But nothing about an older sister, as far as I remember.
• Nothing stolen as far as we know.
• Nothing stolen as far as we know.
• Just watching, as far as I could tell.
• I just mean as far as my career was concerned.
• Now, as far as anyone knows, this is a fishing vessel.
• Not as far as these guys have heard.
• We've yet to perfect that technology, as far as I know.
• Not as far as I recall anyway.
• Nothing, as far as I recall.
• Like I said, as far as I know the other you is alive.
• Above board as far as I know.
• Nothing, as far as I can see.
• Maybe your dreamland isn't as far as you think.
• I only got as far as the door.
• My orders were to follow as far as Brazil.
• They were traced as far as Clapham.

Some examples from the web:

• If it does, the asset's amortisation charge is zero unless and until its residual value subsequently decreases to an amount below the asset's carrying amount.
• The future EU policy should be based on the initial assumption that those seeking asylum are in danger and in need of being granted asylum unless and until it is proven otherwise.
• under Article 48 of the Treaty on European Union, the Constitution will not enter into force unless and until it is ratified by all Member States,
• In due course, the recommendation will be to vote resolutely against these proposals since we do not, and will not, recognise Lisbon unless and until it has been submitted to the British people for their decision.
• The Chinese authorities have to understand that the so-called Central State cannot become a truly modern state unless and until it begins to respect the fundamental principles of democracy and freedom of religion.
• Will the Commission tell the Icelandic Government that Iceland will not be admitted to the EU unless and until it discontinues whaling, including so-called 'scientific whaling'.
• 1. The competent authority shall not grant authorisation unless and until such time as it is fully satisfied that the applicant complies with all requirements under the provisions adopted pursuant to this Directive.
• The Council will take no further action in this regard unless and until the UK notifies its intention to move to the third stage.
• The regulatory authority's decision shall have binding effect unless and until overruled on appeal.
• Unless and until widespread family planning and modern contraceptive services are established, expanding populations in the Horn of Africa will crash against a harsher future climate.
• Events such as this will continue to recur unless and until we establish the "polluter pays" principle in the fullest sense of these words.
• Whatever institutional and other changes take place, there will never be real progress unless and until all Member States act and speak as one.
• The German authorities have taken the necessary measures to block supplies from these producers unless and until they have been checked for the absence of nitrofen.
• The rapporteur proposes that emissions from international maritime transport are covered by this decision unless and until they will be included into ETS or any other Community legal instrument.
• The European Parliament must make it clear that we will not give our assent to any accession unless and until there is fundamental institutional reform.
• It is my opinion that the European Parliament in Strasbourg must not be used unless and until all asbestos is appropriately removed and the buildings have been thoroughly decontaminated.
• In addition, this decision is presumed valid unless and until annulled by the Court of First Instance.
• And that will not happen unless and until a broad-based recovery of the middle- and lower-income groups in advanced economies, including the US, delivers the prolonged rebound in demand for which investors are waiting.
• We took this decision while fully complying with the rules set out in the Treaty, which are what they are unless and until they are changed.
• Unless and until there are significant improvements, our financial assistance will remain limited to direct help to those involved in promoting civil society and democracy, and humanitarian assistance where it is needed.