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ASCII Folding Token Filter
editASCII Folding Token Filter
editA token filter of type asciifolding that converts alphabetic, numeric,
and symbolic Unicode characters which are not in the first 127 ASCII
characters (the "Basic Latin" Unicode block) into their ASCII
equivalents, if one exists. Example:
PUT /asciifold_example
{
"settings" : {
"analysis" : {
"analyzer" : {
"default" : {
"tokenizer" : "standard",
"filter" : ["standard", "asciifolding"]
}
}
}
}
}
Accepts preserve_original setting which defaults to false but if true
will keep the original token as well as emit the folded token. For
example:
PUT /asciifold_example
{
"settings" : {
"analysis" : {
"analyzer" : {
"default" : {
"tokenizer" : "standard",
"filter" : ["standard", "my_ascii_folding"]
}
},
"filter" : {
"my_ascii_folding" : {
"type" : "asciifolding",
"preserve_original" : true
}
}
}
}
}