On Wed, May 28, 2014 at 04:45:57PM -0700, Pasha Bolokhov wrote:
> Move backwards from the end of the string (more efficient for
> lines which do not have trailing spaces or have just a couple).
The original code reads the string from left to right. In theory, that
means we could get away with not calling strlen() at all, over a
right-to-left that must start with a call to strlen().
That being said, I think we already have the length in the calling
function, so you could probably avoid the strlen() altogether, which
makes a right-to-left function more efficient.
However, I doubt it makes that much of a difference in practice, so
unless it's measurable, I would certainly go with the version that is
more readable (and correct, of course).
> Slightly more rare occurrences of 'text \ ' with a backslash
> in between spaces are handled correctly.
Can you add a test for this?
Also, if you are refactoring this function, I think it makes sense to
match "foo\" and "foo\ ", respectively (I think they do with your patch,
but it is a tricky case that is not immediately obvious).
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