flyspell-generic-check-word-p

flyspell-generic-check-word-p is a variable defined in `flyspell.el'.
Its value is

nil

• Automatically becomes buffer-local when set.
• This variable is an alias for `flyspell-generic-check-word-predicate'.
• This variable may be risky if used as a file-local variable.

Documentation:
Function providing per-mode customization over which words are flyspelled.
Returns t to continue checking, nil otherwise.
Flyspell mode sets this variable to whatever is the `flyspell-mode-predicate'
property of the major mode name.