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-rw-r--r--lib/stdlib/doc/src/supervisor.xml12
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml
index ffac1c0bd7..6ff477a42d 100644
--- a/lib/stdlib/doc/src/supervisor.xml
+++ b/lib/stdlib/doc/src/supervisor.xml
@@ -386,9 +386,15 @@
added to the supervisor and the function returns the same
value.</p>
<p>If the child process start function returns <c>ignore</c>,
- the child specification is added to the supervisor, the pid
- is set to <c>undefined</c>, and the function returns
- <c>{ok,undefined}</c>.</p>
+ the child specification is added to the supervisor (unless the
+ supervisor is a <c>simple_one_for_one</c> supervisor, see below),
+ the pid is set to <c>undefined</c> and the function returns
+ <c>{ok,undefined}</c>.
+ </p>
+ <p>In the case of a <c>simple_one_for_one</c> supervisor, when a child
+ process start function returns <c>ignore</c> the functions returns
+ <c>{ok,undefined}</c> and no child is added to the supervisor.
+ </p>
<p>If the child process start function returns an error tuple or
an erroneous value, or if it fails, the child specification is
discarded, and the function returns <c>{error,Error}</c> where