special_prefixes=

Sets the list of characters that are word break characters, but should be left in text when it is passed to the completion function. Programs can use this to help determine what kind of completing to do. For instance, Bash sets this variable to â$@â so that it can complete shell variables and hostnames.

See GNU Readline's rl_special_prefixes variable.

Raises NotImplementedError if the using readline library does not support.

Raises SecurityError exception if $SAFE is 4.