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bug#20411: 24.3; Docstring of `next-single-property-change'
From: |
Eli Barzilay |
Subject: |
bug#20411: 24.3; Docstring of `next-single-property-change' |
Date: |
Thu, 23 Apr 2015 16:29:55 -0400 |
Bah. Yes, I completely missed that. Looking at it again, I think that
it's that "never equal" that threw me off and write code that assumes
that. To make it worse, it reads like an interface very similar to
`re-search-forward' up to that paragraph, and that "helped" me miss the
last sentence.
So I still think that it's confusing -- maybe "except when LIMIT is
non-nil" and possibly a warning that this is different from the
searching functions?
On Thu, Apr 23, 2015 at 11:31 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Eli Barzilay <eli@barzilay.org>
>> Date: Thu, 23 Apr 2015 10:08:01 -0400
>>
>> The documentation for `next-single-property-change' has:
>>
>> Return nil if the property is constant all the way to the end of
>> object. If the value is non-nil, it is a position greater than
>> position, never equal.
>>
>> Both of these are wrong when a bound is given.
>
> Which is why the doc string says, right after the text you cited:
>
> If the optional fourth argument LIMIT is non-nil, don't search
> past position LIMIT; return LIMIT if nothing is found before LIMIT.
>
> Isn't this exactly what you were looking for?
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
http://barzilay.org/ Maze is Life!