1. Docs

Reverse token filter

Reverses each token in a stream. For example, you can use the reverse filter to change the quick brown to eht kciuq nworb.

This can be used in combination with the index_prefixes field mapping option to support suffix searches on a field.

Add to an analyzer

reverse can be added to any analyzer as a filter.

"analyzer": { "reverse_analyzer": { "type": "custom", "tokenizer": "standard", "filter": ["reverse"] } }

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