Import readline 7.0 (patch 5)

This imports readline 7.0 (up to patch 5) while preserving all
gdb-local changes.

This was done by checking out the readline git repository, making a
branch based on the gdb baseline revision, applying the gdb changes to
that branch, and then merging from readline 7.

readline/ChangeLog.gdb
2019-08-12  Tom Tromey  <tom@tromey.com>

	* Imported readline 7.0 patch 5.

1 files changed, 41 insertions, 15 deletions

diff --git a/readline/examples/Makefile.in b/readline/examples/Makefile.in
index c8d937a..5094c6c 100644
--- a/readline/examples/Makefile.in
+++ b/readline/examples/Makefile.in
@@ -53,11 +53,9 @@ CPPFLAGS = @CPPFLAGS@
 
 INCLUDES = -I$(srcdir) -I$(top_srcdir) -I..
 
-CCFLAGS  = $(DEFS) $(LOCAL_CFLAGS) $(CPPFLAGS) $(INCLUDES) $(CFLAGS)
+CCFLAGS  = $(DEFS) $(LOCAL_CFLAGS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
 LDFLAGS = -g -L.. @LDFLAGS@
 
-PURIFY = @PURIFY@
-
 READLINE_LIB = ../libreadline.a
 HISTORY_LIB = ../libhistory.a
 
@@ -68,11 +66,19 @@ TERMCAP_LIB = @TERMCAP_LIB@
 	$(CC) $(CCFLAGS) -c $<
 
 SOURCES = excallback.c fileman.c histexamp.c manexamp.c rl-fgets.c rl.c \
-		rlcat.c rlevent.c rlptytest.c rltest.c rlversion.c
+		rlbasic.c rlcat.c rlevent.c rlptytest.c rltest.c rlversion.c \
+		rl-callbacktest.c hist_erasedups.c hist_purgecmd.c 
 
 EXECUTABLES = fileman$(EXEEXT) rltest$(EXEEXT) rl$(EXEEXT) rlcat$(EXEEXT) \
-		rlevent$(EXEEXT) rlversion$(EXEEXT) histexamp$(EXEEXT)
-OBJECTS = fileman.o rltest.o rl.o rlevent.o rlcat.o rlversion.o histexamp.o
+		rlevent$(EXEEXT) rlversion$(EXEEXT) histexamp$(EXEEXT) \
+		rl-callbacktest$(EXEEXT) rlbasic$(EXEEXT) \
+		hist_erasedups$(EXEEXT) hist_purgecmd$(EXEEXT)
+
+OBJECTS = fileman.o rltest.o rl.o rlevent.o rlcat.o rlversion.o histexamp.o \
+	  rl-callbacktest.o rlbasic.o hist_erasedups.o hist_purgecmd.o
+
+OTHEREXE = rlptytest$(EXEEXT)
+OTHEROBJ = rlptytest.o
 
 all: $(EXECUTABLES)
 everything: all
@@ -96,32 +102,44 @@ uninstall:
 	-rmdir $(DESTDIR)$(installdir)
 
 rl$(EXEEXT): rl.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ rl.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ rl.o $(READLINE_LIB) $(TERMCAP_LIB)
+
+rlbasic$(EXEEXT): rlbasic.o $(READLINE_LIB)
+	$(CC) $(LDFLAGS) -o $@ rlbasic.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 rlcat$(EXEEXT): rlcat.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ rlcat.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ rlcat.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 rlevent$(EXEEXT): rlevent.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ rlevent.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ rlevent.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 fileman$(EXEEXT): fileman.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ fileman.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ fileman.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 rltest$(EXEEXT): rltest.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ rltest.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ rltest.o $(READLINE_LIB) $(TERMCAP_LIB)
+
+rl-callbacktest$(EXEEXT): rl-callbacktest.o $(READLINE_LIB)
+	$(CC) $(LDFLAGS) -o $@ rl-callbacktest.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 rlptytest$(EXEEXT): rlptytest.o $(READLINE_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ rlptytest.o $(READLINE_LIB) $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ rlptytest.o $(READLINE_LIB) $(TERMCAP_LIB) $(LIBUTIL)
 
 rlversion$(EXEEXT): rlversion.o $(READLINE_LIB)
 	$(CC) $(LDFLAGS) -o $@ rlversion.o $(READLINE_LIB) $(TERMCAP_LIB)
 
 histexamp$(EXEEXT): histexamp.o $(HISTORY_LIB)
-	$(PURIFY) $(CC) $(LDFLAGS) -o $@ histexamp.o -lhistory $(TERMCAP_LIB)
+	$(CC) $(LDFLAGS) -o $@ histexamp.o -lhistory $(TERMCAP_LIB)
+
+hist_erasedups$(EXEEXT): hist_erasedups.o $(HISTORY_LIB)
+	$(CC) $(LDFLAGS) -o $@ hist_erasedups.o -lhistory $(TERMCAP_LIB)
+
+hist_purgecmd$(EXEEXT): hist_purgecmd.o $(HISTORY_LIB)
+	$(CC) $(LDFLAGS) -o $@ hist_purgecmd.o -lhistory $(TERMCAP_LIB)
 
 clean mostlyclean:
-	$(RM) $(OBJECTS)
-	$(RM) $(EXECUTABLES) *.exe
+	$(RM) $(OBJECTS) $(OTHEROBJ)
+	$(RM) $(EXECUTABLES) $(OTHEREXE) *.exe
 
 distclean maintainer-clean: clean
 	$(RM) Makefile
@@ -131,13 +149,21 @@ rltest.o: rltest.c
 rl.o: rl.c
 rlversion.o: rlversion.c
 histexamp.o: histexamp.c
+hist_erasedups.o: hist_erasedups.c
+hist_purgecmd.o: hist_purgecmd.c
+rlbasic.o: rlbasic.c
 rlcat.o: rlcat.c
 rlptytest.o: rlptytest.c
+rl-callbacktest.o: rl-callbacktest.c
 
 fileman.o: $(top_srcdir)/readline.h
 rltest.o: $(top_srcdir)/readline.h
 rl.o: $(top_srcdir)/readline.h
 rlversion.o: $(top_srcdir)/readline.h
 histexamp.o: $(top_srcdir)/history.h
+hist_erasedups.o: $(top_srcdir)/history.h
+hist_purgecmd.o: $(top_srcdir)/history.h
+rlbasic.o: $(top_srcdir)/readline.h $(top_srcdir)/history.h
 rlcat.o: $(top_srcdir)/readline.h $(top_srcdir)/history.h
 rlptytest.o: $(top_srcdir)/readline.h $(top_srcdir)/history.h
+rl-callbacktest.o: $(top_srcdir)/readline.h $(top_srcdir)/history.h