tr differences s3-s5-BSD
Brandon Allbery
allbery at ncoast.UUCP
Sun Jun 22 02:59:59 AEST 1986
Expires:
Quoted from <4289 at sun.uucp> ["Re: Variations across unices"], by guy at sun.UUCP...
+---------------
| Yes to the first (for some reason, the S5 and, I think, S3 versions of "tr"
| require the square brackets) and no to the second (the "1" refers to the
| first argument, and is not a numeric value).
+---------------
Not System III.
+---------------
| Unless there was a good reason to incompatibly change the syntax of "tr"
| from what AT&T's own V7 supported, one could argue that the USDL perpetrated
| a bad joke on us all by doing so....
+---------------
My theory was that either (1) since character ranges are [x-y] in other
programs, they should be that way in tr just to make all programs act the same
way, or (2) [x-y] makes it possible to easily translate a hyphen. I prefer
(1); it makes a kind of (skewed, but what's new with AT&T?) sense.
--Brandon
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