-text immediately before point. Returning nil passes control to the next
-back-end. The function should return `stop' if it should complete but
-cannot (e.g. if it is in the middle of a string). Instead of a string,
-the back-end may return a cons where car is the prefix and cdr is used in
-`company-minimum-prefix-length' test. It must be either number or t, and
-in the latter case the test automatically succeeds.
+text immediately before point. Returning nil from this command passes
+control to the next back-end. The function should return `stop' if it
+should complete but cannot (e.g. if it is in the middle of a string).
+Instead of a string, the back-end may return a cons where car is the prefix
+and cdr is used in `company-minimum-prefix-length' test. It must be either
+number or t, and in the latter case the test automatically succeeds.