gh-100557: Clarify signal.pause() docs to explain it only wakes on handled signals

Author: EoinTrial

Doc/library/signal.rst

@@ -419,8 +419,9 @@ The :mod:`!signal` module defines the following functions:
 
 .. function:: pause()
 
-   Cause the process to sleep until a signal is received; the appropriate handler
-   will then be called.  Returns nothing.
+   Cause the process to sleep until a signal with an installed handler is
+   delivered; the handler will then be called.  Signals that are ignored or
+   set to the default action do not wake the process.  Returns nothing.
 
    .. availability:: Unix.
 

Misc/NEWS.d/next/Documentation/2026-04-18-12-38-41.gh-issue-100557.a6MWvZ.rst

@@ -0,0 +1,4 @@
+Clarify the documentation for :func:`signal.pause` to explain that it only
+returns when a signal with an installed handler is delivered, not when an
+ignored signal arrives.
+###########################################################################