The keyword tokenizer  is a “noop” tokenizer that accepts whatever text it
is given and outputs the exact same text as a single term.  It can be combined
with token filters to normalise output, e.g. lower-casing email addresses.
POST _analyze
{
  "tokenizer": "keyword",
  "text": "New York"
}The above sentence would produce the following term:
[ New York ]
The keyword tokenizer accepts the following parameters:
| 
 | 
    The number of characters read into the term buffer in a single pass.
    Defaults to  |