bug#64367: 28.2; doc string of `text-property-search-forward'

[Eli Zaretskii]

> From: Drew Adams <drew.adams@oracle.com>
> Date: Fri, 30 Jun 2023 15:07:02 +0000
> 
> The signature is this:
> 
> (text-property-search-forward PROPERTY
>    &optional VALUE PREDICATE NOT-CURRENT)
> 
> The arguments should be described in order.

Only preferably so.  It is not always possible to do so, and thus it
is not a hard requirement.

In this case, I see no way of describing the arguments in order and
still producing a useful doc string, let alone its first line.

> But the first line of the doc string - the most important - says this:
> 
>  Search for the next region of text where PREDICATE is true.
> 
> Not only is PREDICATE optional; it is not even the first optional arg.
> The first line should describe the _default_ behavior (nil VALUE, nil
> PREDICATE).

Now fixed on the emacs-29 branch.

> Something like this:
> 
>  Search forward for text where PROPERTY is non-nil.

This loses information and is also inaccurate, so I used a different
text:

  Search for next region of text where PREDICATE returns non-nil for PROPERTY.

Closing.