Fix removing of readline callback handler (RHEL-133732)

Resolves: RHEL-133732

libedit-rlhandler.patch

@@ -0,0 +1,37 @@
+commit 5b29c678702d6e9e8fde48eb9f638dcb4267c212
+Author: christos <christos@NetBSD.org>
+Date:   Sat Aug 21 12:38:56 2021 +0000
+
+    PR/56370: mirabilos: libedit change from 2017 kills history in gdb
+
+diff --git a/lib/libedit/readline.c b/lib/libedit/readline.c
+index cbae11f5a21..f4219bb3fb3 100644
+--- a/src/readline.c
++++ b/src/readline.c
+@@ -2078,6 +2078,7 @@ rl_callback_read_char(void)
+ 	const char *buf = el_gets(e, &count);
+ 	char *wbuf;
+ 
++	el_set(e, EL_UNBUFFERED, 1);
+ 	if (buf == NULL || count-- <= 0)
+ 		return;
+ 	if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
+@@ -2093,7 +2094,6 @@ rl_callback_read_char(void)
+ 		} else
+ 			wbuf = NULL;
+ 		(*(void (*)(const char *))rl_linefunc)(wbuf);
+-		el_set(e, EL_UNBUFFERED, 1);
+ 	}
+ }
+ 
+@@ -2111,9 +2111,8 @@ rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
+ void
+ rl_callback_handler_remove(void)
+ {
++	el_set(e, EL_UNBUFFERED, 0);
+ 	rl_linefunc = NULL;
+-	el_end(e);
+-	e = NULL;
+ }
+ 
+ void

libedit.spec

@@ -15,6 +15,8 @@ BuildRequires:	ncurses-devel
 
 # Fix reading of $HOME/.editrc and $EDITRC
 Patch1:		libedit-editrc.patch
+# Fix removing of readline callback handler
+Patch2:		libedit-rlhandler.patch
 
 %description
 Libedit is an autotool- and libtoolized port of the NetBSD Editline library.