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-rw-r--r--lib/edoc/src/edoc_layout.erl25
1 files changed, 19 insertions, 6 deletions
diff --git a/lib/edoc/src/edoc_layout.erl b/lib/edoc/src/edoc_layout.erl
index a102d432bc..36d067d9bc 100644
--- a/lib/edoc/src/edoc_layout.erl
+++ b/lib/edoc/src/edoc_layout.erl
@@ -701,6 +701,8 @@ deprecated(Es, S) ->
end.
behaviours(Es, Name) ->
+ CBs = get_content(callbacks, Es),
+ OCBs = get_content(optional_callbacks, Es),
(case get_elem(behaviour, Es) of
[] -> [];
Es1 ->
@@ -709,13 +711,24 @@ behaviours(Es, Name) ->
?NL]
end
++
- case get_content(callbacks, Es) of
- [] -> [];
- Es1 ->
+ if CBs =:= [], OCBs =:= [] ->
+ [];
+ true ->
+ Req = if CBs =:= [] ->
+ [];
+ true ->
+ [br, " Required callback functions: "]
+ ++ seq(fun callback/1, CBs, ["."])
+ end,
+ Opt = if OCBs =:= [] ->
+ [];
+ true ->
+ [br, " Optional callback functions: "]
+ ++ seq(fun callback/1, OCBs, ["."])
+ end,
[{p, ([{b, ["This module defines the ", {tt, [Name]},
- " behaviour."]},
- br, " Required callback functions: "]
- ++ seq(fun callback/1, Es1, ["."]))},
+ " behaviour."]}]
+ ++ Req ++ Opt)},
?NL]
end).