[Shotwell] any news on multi-tag select?

[Dougie Nisbet]

On 07/04/2012 10:05, Colin Law wrote:
> On 6 April 2012 21:28, Dougie Nisbet<dougie at highmoor.co.uk>  wrote:
>> On 06/04/2012 20:55, Adam Dingle wrote:
>>
>> True, though perhaps the photos have both the hierarchical and
>> non-hierarchical tags.
>>
>>
>> I'm pretty sure that's what's happened, although I suspect the embedded file
>> data is mostly non-hierarchical, and my photos are by no means consistent,
>> covering several decades and a multitude of subjects and tagging
>> conventions.
>>
>> But it's a moot point. The question is how to best go about tidying things
>> up. I'm in no great rush at the moment.
> I imagine that someone more knowledgeable than myself could produce a
> simple script to remove all tags from the photos.  Then presumably the
> old db should work correctly with the new version.
>
> Colin
>

It might be a lot easier than I first thought. A few tests on example 
jpegs, using exiftool and exiv2 -pa 'before and after', make me think it 
might be as simple as:

     exiftool -r -overwrite_original -Subject= -Keywords= /images

(these spaces after the equals signs are important - there's no option 
for deleting or removing tags, they have to be set equal to null).

Dougie