bug#19255: 25.0.50; doc string of `compare-buffer-substrings'

[Lars Ingebrigtsen]

Drew Adams <drew.adams@oracle.com> writes:

> All that is given to describe the parameters is the vague statement that
> "Each substring is represented as three arguments: BUFFER, START and
> END."  Represented how?  It should say that each substring is the text
> in BUFFERN from STARTN to ENDN, for N=1,2.

I just changed it to

The first substring is in BUFFER1 from START1 to END1 and the second
is in BUFFER2 from START2 to END2.

No math necessary.  :-)

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