fix to RL_STATE_EOF in readline callback mode; fix to edge case for terminating signal handling and exit traps in -c command

examples/loadables/Makefile.in

@@ -249,7 +249,7 @@ pushd.c:	${topdir}/builtins/pushd.def
 
 pushd.o:	pushd.c
 	$(RM) $@
-	$(SHOBJ_CC) -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $<
+	$(SHOBJ_CC) -Wno-format-security -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $<
 
 pushd:	pushd.o
 	$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pushd.o $(SHOBJ_LIBS)
@@ -262,7 +262,7 @@ mostlyclean:	clean
 	-( cd perl && ${MAKE} ${MFLAGS} $@ )
 
 distclean maintainer-clean: clean
-	$(RM) Makefile Makefile.inc pushd.c
+	$(RM) Makefile Makefile.inc Makefile.sample pushd.c
 	-( cd perl && ${MAKE} ${MFLAGS} $@ )
 
 installdirs:
@@ -270,6 +270,7 @@ installdirs:
 
 install-dev:	installdirs
 	@$(INSTALL_DATA) Makefile.inc $(DESTDIR)$(loadablesdir)/Makefile.inc
+	@$(INSTALL_DATA) Makefile.sample $(DESTDIR)$(loadablesdir)/Makefile.sample
 	@$(INSTALL_DATA) $(srcdir)/loadables.h $(DESTDIR)$(loadablesdir)/loadables.h
 	@( cd $(BUILD_DIR) && ${MAKE} ${MFLAGS} DESTDIR="$(DESTDIR)" install-headers)
 
@@ -281,7 +282,8 @@ install-supported:	all installdirs install-dev
 	done
 
 uninstall-dev:
-	-$(RM) $(DESTDIR)$(loadablesdir)/Makefile.inc $(DESTDIR)$(loadablesdir)/loadables.h
+	-$(RM) $(DESTDIR)$(loadablesdir)/Makefile.inc $(DESTDIR)$(loadablesdir)/Makefile.sample
+	-$(RM) $(DESTDIR)$(loadablesdir)/loadables.h
 	-( cd $(BUILD_DIR) && ${MAKE} ${MFLAGS} DESTDIR="$(DESTDIR)" uninstall-headers)
 
 uninstall-supported:	uninstall-dev

examples/loadables/Makefile.inc.in

@@ -1,7 +1,7 @@
 #
 # Sample makefile for bash loadable builtin development
 #
-# Copyright (C) 2015 Free Software Foundation, Inc.     
+# Copyright (C) 2015-2022 Free Software Foundation, Inc.     
 
 #   This program is free software: you can redistribute it and/or modify
 #   it under the terms of the GNU General Public License as published by
@@ -99,10 +99,3 @@ INC = -I$(headersdir) -I$(headersdir)/include -I$(headersdir)/builtins
 
 .c.o:
 	$(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
-
-all:	example
-
-example:	example.o
-	$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ example.o $(SHOBJ_LIBS)
-
-example.o: example.c

examples/loadables/Makefile.sample.in

@@ -0,0 +1,44 @@
+#
+# Sample makefile for bash loadable builtin development
+#
+# Copyright (C) 2022 Free Software Foundation, Inc.
+
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# these should match the ones in Makefile.in (for the make install target)
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+libdir = @libdir@
+
+# ${loadablesdir} is where the example loadable builtins and data files
+# are installed (make install target in Makefile.in)
+
+loadablesdir = @loadablesdir@
+DESTDIR =
+
+# include Makefile.inc for all boilerplate definitions
+
+include $(DESTDIR)$(loadablesdir)/Makefile.inc
+
+# here, `example' is the name of the shared object
+# replace `example' with the appropriate filename
+
+all:	example
+
+example:	example.o
+	$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ example.o $(SHOBJ_LIBS)
+
+example.o: example.c

examples/loadables/print.c

@@ -181,7 +181,8 @@ printargs (list, ofp)
   for (sawc = 0, l = list; l; l = l->next)
     {
       ostr = ansicstr (l->word->word, strlen (l->word->word), 0, &sawc, (int *)0);
-      fprintf (ofp, "%s", ostr);
+      if (ostr)
+	fprintf (ofp, "%s", ostr);
       free (ostr);
       if (sawc)
         return (0);