You are posting a comment about... Getting it strait
In The Sunday Times and all over Google you see references to "straightened financial circumstances". To be sure, when you're hard up, you need to straighten out your finances, but your circumstances are straitened.
Straight and strait are two different words. "Straight" is from Old English streht and is related to "stretch". "Strait" is from Old French estreit (compare Modern French étroit) meaning "tight, close, narrow", from Latin strictus and related to "strain".
The late, great and presumably straight Ronnie Barker played an ex con who had strayed from the strait and narrow (Matthew Ch 7 vs 14), but then reformed and tried to go "straight as an arrow". No wonder he failed with all that etymololgical confusion around.
The folk-etymological confusion between straight and strait is widespread. Not only do we see references to straightjackets, to the extent that this spelling is frequently offered as an alternative in dictionaries, but it also appears in straight-laced to refer to someone with strict and unbending moral attitudes, a form which dictionaries also now allow. In the latter case, the original was certainly strait-laced, referring to stays or corsets that were tightly laced and confining, but which by the sixteenth century had already taken on the modern moralistic sense.
There is a common sense image behind straight and narrow that has helped it to be accepted, since it can be said to contain the idea of a road which is direct and undeviating, the true path of virtue that leads us unswervingly to our destination without straying into byways of temptation.
Straight and narrow is now by far the more common spelling, both in the UK and the US, one which is given as standard in dictionaries. Anyone who insists on strait and narrow may well be regarded as pedantic.