viper-surrounding-word-function

viper-surrounding-word-function is a variable defined in `viper-mous.el'.
Its value is

viper-surrounding-word

• This variable may be risky if used as a file-local variable.

Documentation:
Function that determines what constitutes a word for clicking events.
Takes two parameters: a COUNT, indicating how many words to return,
and CLICK-COUNT, telling whether this is the first click, a double-click,
or a triple-click.

You can customize this variable.