bug#26338: 26.0.50; Collect all matches for REGEXP in current buffer

[Tino Calancha <tino.calancha@gmail.com>]

On Mon, 3 Apr 2017, Juri Linkov wrote:

>> we have `count-matches' in replace.el, which returns the
>> number of matches of a regexp.  Why not to have an standard
>> function `collect-matches' as well?
>>
>> I know `xref-collect-matches' but it uses grep program: some users might
>> not have grep installed, or they may prefer to use Emacs regexps.
>>
>> I've being using for a while something similar than the patch below.
>> Probably it doesn't need to be a command, just a normal function.
>>
>> What do you think?
>
> But there is already the occur-collect feature implemented in occur-1
> and occur-read-primary-args.  Why would we need a separate command?
Sorry, i don't know about `occur-collect', i can not find its definition.
It doesn't seem to be a defun in replace.el. 
See my previous e-mail and let me know if `occur-collect' can serve for 
that purpose.