If optional argument STYLE is specified, create a fontset of STYLE
by modifying FONTSET-SPEC appropriately. STYLE can be one of `bold',
`italic', and `bold-italic'.
-If this function attemps to create already existing fontset, error is
-signaled unlress the optional 3rd argument NOERROR is non-nil."
+If this function attempts to create already existing fontset, error is
+signaled unless the optional 3rd argument NOERROR is non-nil."
(if (not (string-match "^[^,]+" fontset-spec))
(error "Invalid fontset spec: %s" fontset-spec))
(let ((idx (match-end 0))