It's often used to reload the config. Also used to document how to
change signal handling in gdb which I always forget.
# without debug information.
set disassemble-next-line on
# without debug information.
set disassemble-next-line on
+
+# Don't stop on SIGUSR1 and instead let the program handle it. Thanks to
+# peeterjot [1] for the idea (read on 2018-02-02).
+#
+# [1]: https://peeterjoot.wordpress.com/2010/07/07/avoiding-gdb-signal-noise/
+handle SIGUSR1 noprint nostop
+