docs/reference/analysis/charfilters/mapping-charfilter.asciidoc


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[[analysis-mapping-charfilter]]
=== Mapping Char Filter

A char filter of type `mapping` replacing characters of an analyzed text
with given mapping.

Here is a sample configuration:

[source,js]
--------------------------------------------------
{
    "index" : {
        "analysis" : {
            "char_filter" : {
                "my_mapping" : {
                    "type" : "mapping",
                    "mappings" : ["ph=>f", "qu=>q"]
                }
            },
            "analyzer" : {
                "custom_with_char_filter" : {
                    "tokenizer" : "standard",
                    "char_filter" : ["my_mapping"]
                },
            }
        }
    }
}
--------------------------------------------------

Otherwise the setting `mappings_path` can specify a file where you can
put the list of char mapping :

[source,js]
--------------------------------------------------
ph => f
qu => k
--------------------------------------------------