65 lines
2.7 KiB
Plaintext
65 lines
2.7 KiB
Plaintext
|
MBOX-Line: From blong at google.com Wed Jul 30 00:43:34 2014
|
||
|
|
To: imap-protocol@u.washington.edu
|
||
|
|
From: Brandon Long <blong@google.com>
|
||
|
|
Date: Fri Jun 8 12:34:53 2018
|
||
|
|
Subject: [Imap-protocol] Gmail search on Subject
|
||
|
|
In-Reply-To: <alpine.LSU.2.19.9999.1407292017370.5611@localhost.localdomain>
|
||
|
|
References: <alpine.LSU.2.19.9999.1407292017370.5611@localhost.localdomain>
|
||
|
|
Message-ID: <CABa8R6s9ozqSa1d9RGGhQMCEty=voWiFhtci1mukpP3n8atSsg@mail.gmail.com>
|
||
|
|
|
||
|
|
In violation of the IMAP spec, Gmail's IMAP search is implemented on top of
|
||
|
|
our search index, and is not sub-string search. Well, that's not entirely
|
||
|
|
true, we do implement sub-string search for "non indexed" headers, which
|
||
|
|
admittedly is more complicated for developers to understand... but the
|
||
|
|
performance benefit is considered to be worth it.
|
||
|
|
|
||
|
|
If you search for '%' in the Gmail web interface, you'll see that it
|
||
|
|
matches every message there as well. That's probably unintended behavior.
|
||
|
|
I haven't checked recently, but last I knew, our search index didn't
|
||
|
|
include symbols, though its possible it does special case some symbols for
|
||
|
|
things like 'c++'. In any case, what you're most likely seeing is that
|
||
|
|
terms are added to the search, the '%' is parsed into nothing, so what
|
||
|
|
remains is just the added terms (ie, in:foldername).
|
||
|
|
|
||
|
|
We've debated before what the "proper" response is in this context, whether
|
||
|
|
to have no/all results, or whether to have an error response like <ag> NO
|
||
|
|
[SERVERBUG] when we're given a query which makes no sense to our
|
||
|
|
implementation. Currently, we tend to respond with "all in folder" as more
|
||
|
|
of an accident of implementation than purpose. In general, clients seem
|
||
|
|
ill prepared for NO responses... or even to an OK response without an
|
||
|
|
untagged response.
|
||
|
|
|
||
|
|
Brandon
|
||
|
|
|
||
|
|
|
||
|
|
On Tue, Jul 29, 2014 at 7:18 PM, Eduardo Chappa <echappa@gmx.com> wrote:
|
||
|
|
|
||
|
|
> Dear all,
|
||
|
|
>
|
||
|
|
> Apologies if this is not the right forum to post this, but it seems that
|
||
|
|
> it is the de facto place to report bugs on Gmail. I did send this privately
|
||
|
|
> a few weeks ago, but received not acknowledgement, so I hope this time it
|
||
|
|
> will be considered.
|
||
|
|
>
|
||
|
|
> A search using the string "%" matches all messages. For example, the
|
||
|
|
> command
|
||
|
|
>
|
||
|
|
> 0000000a SEARCH SUBJECT "%"
|
||
|
|
>
|
||
|
|
> matches all messages in my inbox, not only those that contain the string
|
||
|
|
> "50%", but also those that do not contain it, such as this one.
|
||
|
|
>
|
||
|
|
> Thank you.
|
||
|
|
>
|
||
|
|
> --
|
||
|
|
> Eduardo
|
||
|
|
> http://patches.freeiz.com/alpine/
|
||
|
|
> _______________________________________________
|
||
|
|
> Imap-protocol mailing list
|
||
|
|
> Imap-protocol@u.washington.edu
|
||
|
|
> http://mailman13.u.washington.edu/mailman/listinfo/imap-protocol
|
||
|
|
>
|
||
|
|
-------------- next part --------------
|
||
|
|
An HTML attachment was scrubbed...
|
||
|
|
URL: <http://mailman13.u.washington.edu/pipermail/imap-protocol/attachments/20140730/38801433/attachment.html>
|