DotLucene 1.4 API Documentation |

# CharStream.Backup Method

Backs up the input stream by amount steps. Lexer calls this method if it had already read some characters, but could not use them to match a (longer) token. So, they will be used again as the prefix of the next token and it is the implemetation's responsibility to do this right.

void Backup(
int amount
);

#### See Also

CharStream Interface | Lucene.Net.Analysis.Standard Namespace