Update readline to version 5.2. This fixes bug#18431.

cmd-line-utils/readline/callback.c

@@ -1,6 +1,6 @@
 /* callback.c -- functions to use readline as an X `callback' mechanism. */
 
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2005 Free Software Foundation, Inc.
 
    This file is part of the GNU Readline Library, a library for
    reading lines of text with interactive input and history editing.
@@ -21,7 +21,9 @@
    59 Temple Place, Suite 330, Boston, MA 02111 USA. */
 #define READLINE_LIBRARY
 
-#include "config_readline.h"
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
 
 #include "rlconf.h"
 
@@ -41,10 +43,16 @@
 #include "rldefs.h"
 #include "readline.h"
 #include "rlprivate.h"
+#include "xmalloc.h"
+
+/* Private data for callback registration functions.  See comments in
+   rl_callback_read_char for more details. */
+_rl_callback_func_t *_rl_callback_func = 0;
+_rl_callback_generic_arg *_rl_callback_data = 0;
 
 /* **************************************************************** */
 /*								    */
-/*			Callback Readline Functions                 */
+/*			Callback Readline Functions		 */
 /*								    */
 /* **************************************************************** */
 
@@ -70,7 +78,8 @@ _rl_callback_newline ()
     {
       in_handler = 1;
 
-      (*rl_prep_term_function) (_rl_meta_flag);
+      if (rl_prep_term_function)
+	(*rl_prep_term_function) (_rl_meta_flag);
 
 #if defined (HANDLE_SIGNALS)
       rl_set_signals ();
@@ -87,6 +96,7 @@ rl_callback_handler_install (prompt, linefunc)
      rl_vcpfunc_t *linefunc;
 {
   rl_set_prompt (prompt);
+  RL_SETSTATE (RL_STATE_CALLBACK);
   rl_linefunc = linefunc;
   _rl_callback_newline ();
 }
@@ -96,7 +106,8 @@ void
 rl_callback_read_char ()
 {
   char *line;
-  int eof;
+  int eof, jcode;
+  static procenv_t olevel;
 
   if (rl_linefunc == NULL)
     {
@@ -104,16 +115,89 @@ rl_callback_read_char ()
       abort ();
     }
 
-  eof = readline_internal_char ();
-
-  /* We loop in case some function has pushed input back with rl_execute_next. */
-  for (;;)
+  memcpy ((void *)olevel, (void *)readline_top_level, sizeof (procenv_t));
+  jcode = setjmp (readline_top_level);
+  if (jcode)
     {
+      (*rl_redisplay_function) ();
+      _rl_want_redisplay = 0;
+      memcpy ((void *)readline_top_level, (void *)olevel, sizeof (procenv_t));
+      return;
+    }
+
+  do
+    {
+      if  (RL_ISSTATE (RL_STATE_ISEARCH))
+	{
+	  eof = _rl_isearch_callback (_rl_iscxt);
+	  if (eof == 0 && (RL_ISSTATE (RL_STATE_ISEARCH) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING))
+	    rl_callback_read_char ();
+
+	  return;
+	}
+      else if  (RL_ISSTATE (RL_STATE_NSEARCH))
+	{
+	  eof = _rl_nsearch_callback (_rl_nscxt);
+	  return;
+	}
+      else if (RL_ISSTATE (RL_STATE_NUMERICARG))
+	{
+	  eof = _rl_arg_callback (_rl_argcxt);
+	  if (eof == 0 && (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING))
+	    rl_callback_read_char ();
+	  /* XXX - this should handle _rl_last_command_was_kill better */
+	  else if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)
+	    _rl_internal_char_cleanup ();
+
+	  return;
+	}
+      else if (RL_ISSTATE (RL_STATE_MULTIKEY))
+	{
+	  eof = _rl_dispatch_callback (_rl_kscxt);	/* For now */
+	  while ((eof == -1 || eof == -2) && RL_ISSTATE (RL_STATE_MULTIKEY) && _rl_kscxt && (_rl_kscxt->flags & KSEQ_DISPATCHED))
+	    eof = _rl_dispatch_callback (_rl_kscxt);
+	  if (RL_ISSTATE (RL_STATE_MULTIKEY) == 0)
+	    {
+	      _rl_internal_char_cleanup ();
+	      _rl_want_redisplay = 1;
+	    }
+	}
+      else if (_rl_callback_func)
+	{
+	  /* This allows functions that simply need to read an additional
+	     character (like quoted-insert) to register a function to be
+	     called when input is available.  _rl_callback_data is simply a
+	     pointer to a struct that has the argument count originally
+	     passed to the registering function and space for any additional
+	     parameters.  */
+	  eof = (*_rl_callback_func) (_rl_callback_data);
+	  /* If the function `deregisters' itself, make sure the data is
+	     cleaned up. */
+	  if (_rl_callback_func == 0)
+	    {
+	      if (_rl_callback_data) 	
+		{
+		  _rl_callback_data_dispose (_rl_callback_data);
+		  _rl_callback_data = 0;
+		}
+	      _rl_internal_char_cleanup ();
+	    }
+	}
+      else
+	eof = readline_internal_char ();
+
+      if (rl_done == 0 && _rl_want_redisplay)
+	{
+	  (*rl_redisplay_function) ();
+	  _rl_want_redisplay = 0;
+	}
+
       if (rl_done)
 	{
 	  line = readline_internal_teardown (eof);
 
-	  (*rl_deprep_term_function) ();
+	  if (rl_deprep_term_function)
+	    (*rl_deprep_term_function) ();
 #if defined (HANDLE_SIGNALS)
 	  rl_clear_signals ();
 #endif
@@ -129,11 +213,8 @@ rl_callback_read_char ()
 	  if (in_handler == 0 && rl_linefunc)
 	    _rl_callback_newline ();
 	}
-      if (rl_pending_input || _rl_pushed_input_available ())
-	eof = readline_internal_char ();
-      else
-        break;
     }
+  while (rl_pending_input || _rl_pushed_input_available () || RL_ISSTATE (RL_STATE_MACROINPUT));
 }
 
 /* Remove the handler, and make sure the terminal is in its normal state. */
@@ -141,14 +222,37 @@ void
 rl_callback_handler_remove ()
 {
   rl_linefunc = NULL;
+  RL_UNSETSTATE (RL_STATE_CALLBACK);
   if (in_handler)
     {
       in_handler = 0;
-      (*rl_deprep_term_function) ();
+      if (rl_deprep_term_function)
+	(*rl_deprep_term_function) ();
 #if defined (HANDLE_SIGNALS)
       rl_clear_signals ();
 #endif
     }
 }
 
+_rl_callback_generic_arg *
+_rl_callback_data_alloc (count)
+     int count;
+{
+  _rl_callback_generic_arg *arg;
+
+  arg = (_rl_callback_generic_arg *)xmalloc (sizeof (_rl_callback_generic_arg));
+  arg->count = count;
+
+  arg->i1 = arg->i2 = 0;
+
+  return arg;
+}
+
+void _rl_callback_data_dispose (arg)
+     _rl_callback_generic_arg *arg;
+{
+  if (arg)
+    free (arg);
+}
+
 #endif