Revise status messages for terminated children

Print a status message for a terminated child if: 1) the wait builtin is called
in an interactive shell, or 2) the child terminated due to a signal and it is
not sigint and not sigpipe or it caused the child to dump core.

The messages are of the form:

    [pid:] <signal message[--core dumped] | done (status)>

Before this, there were various inconsistencies, e.g. the wait builtin--
regardless if called in an interactive shell or script--would print just the
pid and a colon w/o a message and w/o a newline if the child it waited for
terminated due to receiving sigint.

1 files changed, 2 insertions, 8 deletions

diff --git a/mksignal.c b/mksignal.c
index 727d0e2..12c6341 100644
--- a/mksignal.c
+++ b/mksignal.c
@@ -57,12 +57,9 @@ static struct signaming signamings[] = {
 #ifdef SIGILL
     { SIGILL,	"sigill",	"illegal instruction"},
 #endif
-
-/* We don't want a default message for SIGINT. */
 #ifdef SIGINT
-    { SIGINT,	"sigint",	""},
+    { SIGINT,	"sigint",	"interrupt"},
 #endif
-
 #ifdef SIGIO
     { SIGIO,	"sigio",	"socket i/o possible"},
 #endif
@@ -78,12 +75,9 @@ static struct signaming signamings[] = {
 #ifdef SIGLWP
     { SIGLWP,	"siglwp",	"thread library signal"},
 #endif
-
-/* By default, SIGPIPEs are silent. */
 #ifdef SIGPIPE
-    { SIGPIPE,	"sigpipe",	""},
+    { SIGPIPE,	"sigpipe",	"broken pipe"},
 #endif
-
 #ifdef SIGPOLL
     { SIGPOLL,	"sigpoll",	"pollable event occurred"},
 #endif