viper-syntax-preference

viper-syntax-preference is a variable defined in `viper-util.el'.
Its value is

reformed-vi

• Automatically becomes buffer-local when set.

Documentation:
Syntax type characterizing Viper's alphanumeric symbols.
Affects movement and change commands that deal with Vi-style words.
Works best when set in the hooks to various major modes.

`strict-vi' means Viper words are (hopefully) exactly as in Vi.

`reformed-vi' means Viper words are like Emacs words (as determined using
Emacs syntax tables, which are different for different major modes) with two
exceptions: the symbol `_' is always part of a word and typical Vi non-word
symbols, such as `,',:,",),{, etc., are excluded.
This behaves very close to `strict-vi', but also works well with non-ASCII
characters from various alphabets.

`extended' means Viper word constituents are symbols that are marked as being
parts of words OR symbols in Emacs syntax tables.
This is most appropriate for major modes intended for editing programs.

`emacs' means Viper words are the same as Emacs words as specified by Emacs
syntax tables.
This option is appropriate if you like Emacs-style words.

You can customize this variable.