superword-mode
superword-mode is an interactive autoloaded Lisp function in `subword.el
'.
(superword-mode &optional ARG)
Toggle superword movement and editing (Superword mode).
With a prefix argument ARG, enable Superword mode if ARG is
positive, and disable it otherwise. If called from Lisp, enable
the mode if ARG is omitted or nil.
Superword mode is a buffer-local minor mode. Enabling it changes
the definition of words such that symbols characters are treated
as parts of words: e.g., in `superword-mode',
"this_is_a_symbol" counts as one word.
key binding
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