Re: [O] How to filter agenda for Word1 OR Word2?

[Thorsten Jolitz]

Alexander Baier <address@hidden> writes:

> On 2014-07-11 13:26 Martin Beck wrote:
>> I have a search result (created by a search agenda C-C a s) and I
>> want to narrow it down further with additional criteria.
>> I tried to use the "=" key for "Narrow to entries matching regexp",
>> but I did not find out how to combine several terms in here.
>>  
>> As long as I only enter one word, it works. But if I want to filter
>> for criteria like
>>  
>> Word1 OR Word2
>> or (Word1 OR Word2) AND Word3
>> or (Word1 OR Word2) AND NOT (Word3 OR Word4)
>>  
>> I get no results just by entering
>> e.g. Word1|Word2
>> or Word1&Word2
>>  
>> I'm sure this is trivial, but I'm not an expert in regular
>> expressions and currently don't see how to solve that.
>> :-(
>
> Using \(Word1\)\|\(Word2\) works for me. If you find it troublesome to
> type a lot of these escaped parens, you might want to try
> smartparens-mode for auto insertion of the closing _escaped_ paren.
>
> As an example, if you type "\(", smartparens will automatically insert
> "\)" after point. You can even navigate over these groups via sexps
> commands.

I always wondered how this C-c a s search should work. I can only enter
one word, just like the OP.

None of these (valid) regexps works here:

,----
| (foo|bar)
| \(foo\|bar\)
| \\(foo|bar\\)
`----

This does not work either

,----
| \(foo\)\|\(bar\)
`----

nor does 

,----
| \(\(foo\)\|\(bar\)\)
`----

or simply

,----
| foo|bar
`----

-- 
cheers,
Thorsten