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, 51 insertions, 16 deletions

diff --git a/readline/rltty.c b/readline/rltty.c
index d237b1c..b1c7929 100644
--- a/readline/rltty.c
+++ b/readline/rltty.c
@@ -1,10 +1,10 @@
 /* rltty.c -- functions to prepare and restore the terminal for readline's
    use. */
 
-/* Copyright (C) 1992-2005 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2016 Free Software Foundation, Inc.
 
    This file is part of the GNU Readline Library (Readline), a library
-   for reading lines of text with interactive input and history editing.      
+   for reading lines of text with interactive input and history editing.
 
    Readline is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -37,11 +37,11 @@
 
 #include "rldefs.h"
 
-#if defined (GWINSZ_IN_SYS_IOCTL)
-#  include <sys/ioctl.h>
-#endif /* GWINSZ_IN_SYS_IOCTL */
-
 #include "rltty.h"
+#if defined (HAVE_SYS_IOCTL_H)
+#  include <sys/ioctl.h>		/* include for declaration of ioctl */
+#endif
+
 #include "readline.h"
 #include "rlprivate.h"
 
@@ -60,7 +60,13 @@ static void set_winsize PARAMS((int));
 /*								    */
 /* **************************************************************** */
 
-/* Non-zero means that the terminal is in a prepped state. */
+/* Non-zero means that the terminal is in a prepped state.  There are several
+   flags that are OR'd in to denote whether or not we have sent various
+   init strings to the terminal. */
+#define TPX_PREPPED	0x01
+#define TPX_BRACKPASTE	0x02
+#define TPX_METAKEY	0x04
+
 static int terminal_prepped;
 
 static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars;
@@ -121,7 +127,7 @@ static int set_tty_settings PARAMS((int, TIOTYPE *));
 
 static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));
 
-static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t));
+static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));
 
 static void
 save_tty_chars (tiop)
@@ -341,7 +347,7 @@ static int set_tty_settings PARAMS((int, TIOTYPE *));
 
 static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));
 
-static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t));
+static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));
 static void _rl_bind_tty_special_chars PARAMS((Keymap, TIOTYPE));
 
 #if defined (FLUSHO)
@@ -528,10 +534,10 @@ prepare_terminal_settings (meta_flag, oldtio, tiop)
 
 #if defined (USE_XON_XOFF)
 #if defined (IXANY)
-  tiop->c_iflag &= ~(IXON | IXOFF | IXANY);
+  tiop->c_iflag &= ~(IXON | IXANY);
 #else
   /* `strict' Posix systems do not define IXANY. */
-  tiop->c_iflag &= ~(IXON | IXOFF);
+  tiop->c_iflag &= ~IXON;
 #endif /* IXANY */
 #endif /* USE_XON_XOFF */
 
@@ -595,7 +601,7 @@ void
 rl_prep_terminal (meta_flag)
      int meta_flag;
 {
-  int tty;
+  int tty, nprep;
   TIOTYPE tio;
 
   if (terminal_prepped)
@@ -642,7 +648,7 @@ rl_prep_terminal (meta_flag)
       /* If editing in vi mode, make sure we set the bindings in the
 	 insertion keymap no matter what keymap we ended up in. */
       if (rl_editing_mode == vi_mode)
-	_rl_bind_tty_special_chars (vi_insertion_keymap, tio);	
+	_rl_bind_tty_special_chars (vi_insertion_keymap, tio);
       else
 #endif
 	_rl_bind_tty_special_chars (_rl_keymap, tio);
@@ -659,8 +665,16 @@ rl_prep_terminal (meta_flag)
   if (_rl_enable_keypad)
     _rl_control_keypad (1);
 
+  nprep = TPX_PREPPED;
+
+  if (_rl_enable_bracketed_paste)
+    {
+      fprintf (rl_outstream, BRACK_PASTE_INIT);
+      nprep |= TPX_BRACKPASTE;
+    }
+
   fflush (rl_outstream);
-  terminal_prepped = 1;
+  terminal_prepped = nprep;
   RL_SETSTATE(RL_STATE_TERMPREPPED);
 
   _rl_release_sigint ();
@@ -672,13 +686,16 @@ rl_deprep_terminal ()
 {
   int tty;
 
-  if (!terminal_prepped)
+  if (terminal_prepped == 0)
     return;
 
   /* Try to keep this function from being interrupted. */
   _rl_block_sigint ();
 
-  tty = rl_instream ? fileno (rl_instream) : fileno (stdout);
+  tty = rl_instream ? fileno (rl_instream) : fileno (stdin);
+
+  if (terminal_prepped & TPX_BRACKPASTE)
+    fprintf (rl_outstream, BRACK_PASTE_FINI);
 
   if (_rl_enable_keypad)
     _rl_control_keypad (0);
@@ -697,6 +714,19 @@ rl_deprep_terminal ()
   _rl_release_sigint ();
 }
 #endif /* !NO_TTY_DRIVER */
+
+/* Set readline's idea of whether or not it is echoing output to the terminal,
+   returning the old value. */
+int
+rl_tty_set_echoing (u)
+     int u;
+{
+  int o;
+
+  o = _rl_echoing_p;
+  _rl_echoing_p = u;
+  return o;
+}
 
 /* **************************************************************** */
 /*								    */
@@ -859,6 +889,11 @@ _rl_bind_tty_special_chars (kmap, ttybuff)
 #  endif /* VLNEXT && TERMIOS_TTY_DRIVER */
 
 #  if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)
+#    if defined (VI_MODE)
+  if (rl_editing_mode == vi_mode)
+    SET_SPECIAL (VWERASE, rl_vi_unix_word_rubout);
+  else
+#    endif
   SET_SPECIAL (VWERASE, rl_unix_word_rubout);
 #  endif /* VWERASE && TERMIOS_TTY_DRIVER */
 }