-# func_reset_sigpipe
-# Resets SIGPIPE to its default behaviour. SIGPIPE is signalled when a process
-# writes into a pipe with no readers, i.e. a pipe where all readers have
-# already closed their file descriptor that read from it or exited entirely.
-# The default behaviour is to terminate the current process without an error
-# message.
-# When "trap '' SIGPIPE" is in effect, the behaviour (at least with bash) is to
-# terminate the current process with an error message.
-# This function should be called at the beginning of a command that only
-# produces output to stdout (i.e. no side effects!), when the command that
-# will read from this pipe might prematurely exit or close its standard input
-# descriptor.
-if test -n "$BASH_VERSION"; then
- # The problem has only been reported with bash. Probably it occurs only with
- # bash-3.2. For the reasons, see
- # <http://lists.gnu.org/archive/html/bug-bash/2008-12/msg00050.html>.
- # Note that Solaris sh does not understand "trap - SIGPIPE".
- func_reset_sigpipe ()
- {
- trap - SIGPIPE
- }
-else
- func_reset_sigpipe ()
- {
- :
- }
-fi
-
-# Ensure an 'echo' command that does not interpret backslashes.
-# Test cases:
+# Ensure an 'echo' command
+# 1. does not interpret backslashes and
+# 2. does not print an error message "broken pipe" when writing into a pipe
+# with no writers.
+#
+# Test cases for problem 1: