* doc/lispref/tips.texi (Coding Conventions): Document that
variables should now be called -p (bug#26564).
condition is true or false, give the function a name that ends in
@samp{p} (which stands for ``predicate''). If the name is one word,
add just @samp{p}; if the name is multiple words, add @samp{-p}.
-Examples are @code{framep} and @code{frame-live-p}.
+Examples are @code{framep} and @code{frame-live-p}. This predicate
+suffix should not be used in variable names (i.e., you should name a
+variable @code{foo-feature} instead of @code{foo-feature-p}).
@item
If the purpose of a variable is to store a single function, give it a