negative search feature

[rtaskf]

It's a very useful app for sorting and analyzing your diffusions, but something rather basic seems to be missing: a simple negative text search to exclude certain prompts from the filter. I can find all "by van gogh" pictures, by I can't reversely find all that are NOT "by van gogh". It would be cool, if this would be added with a simple "AND", "OR", "NOT" kind of syntax, or at least just the "NOT" part.