commit bash-20060112 snapshot

lib/readline/doc/rltech.texi

@@ -1033,8 +1033,10 @@ pending input has not already been read with @code{rl_read_key()}.
 @deftypefun int rl_set_keyboard_input_timeout (int u)
 While waiting for keyboard input in @code{rl_read_key()}, Readline will
 wait for @var{u} microseconds for input before calling any function
-assigned to @code{rl_event_hook}.  The default waiting period is
-one-tenth of a second.  Returns the old timeout value.
+assigned to @code{rl_event_hook}.  @var{u} must be greater than or equal
+to zero (a zero-length timeout is equivalent to a poll).
+The default waiting period is one-tenth of a second.
+Returns the old timeout value.
 @end deftypefun
 
 @node Terminal Management

lib/readline/doc/version.texi

@@ -1,10 +1,10 @@
 @ignore
-Copyright (C) 1988-2005 Free Software Foundation, Inc. 
+Copyright (C) 1988-2006 Free Software Foundation, Inc. 
 @end ignore
 
 @set EDITION 5.1
 @set VERSION 5.1
-@set UPDATED 11 November 2005
-@set UPDATED-MONTH November 2005
+@set UPDATED 14 January 2006
+@set UPDATED-MONTH January 2006
 
-@set LASTCHANGE Fri Nov 11 19:50:51 EST 2005
+@set LASTCHANGE Sat Jan 14 21:10:59 EST 2006

lib/readline/doc/version.texi~

@@ -2,8 +2,8 @@
 Copyright (C) 1988-2005 Free Software Foundation, Inc. 
 @end ignore
 
-@set EDITION 5.1-beta1
-@set VERSION 5.1-beta1
+@set EDITION 5.1
+@set VERSION 5.1
 @set UPDATED 11 November 2005
 @set UPDATED-MONTH November 2005
 

lib/readline/input.c

@@ -263,7 +263,7 @@ rl_set_keyboard_input_timeout (u)
   int o;
 
   o = _keyboard_input_timeout;
-  if (u > 0)
+  if (u >= 0)
     _keyboard_input_timeout = u;
   return (o);
 }

lib/readline/input.c~

@@ -0,0 +1,570 @@
+/* input.c -- character input functions for readline. */
+
+/* Copyright (C) 1994-2005 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.
+
+   The GNU Readline Library 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 2, or
+   (at your option) any later version.
+
+   The GNU Readline Library 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.
+
+   The GNU General Public License is often shipped with GNU software, and
+   is generally kept in a file called COPYING or LICENSE.  If you do not
+   have a copy of the license, write to the Free Software Foundation,
+   59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+#define READLINE_LIBRARY
+
+#if defined (__TANDEM)
+#  include <floss.h>
+#endif
+
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+#  include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_SELECT)
+#  if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
+#    include <sys/time.h>
+#  endif
+#endif /* HAVE_SELECT */
+#if defined (HAVE_SYS_SELECT_H)
+#  include <sys/select.h>
+#endif
+
+#if defined (FIONREAD_IN_SYS_IOCTL)
+#  include <sys/ioctl.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+#include "rlmbutil.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+/* What kind of non-blocking I/O do we have? */
+#if !defined (O_NDELAY) && defined (O_NONBLOCK)
+#  define O_NDELAY O_NONBLOCK	/* Posix style */
+#endif
+
+/* Non-null means it is a pointer to a function to run while waiting for
+   character input. */
+rl_hook_func_t *rl_event_hook = (rl_hook_func_t *)NULL;
+
+rl_getc_func_t *rl_getc_function = rl_getc;
+
+static int _keyboard_input_timeout = 100000;		/* 0.1 seconds; it's in usec */
+
+static int ibuffer_space PARAMS((void));
+static int rl_get_char PARAMS((int *));
+static int rl_gather_tyi PARAMS((void));
+
+/* **************************************************************** */
+/*								    */
+/*			Character Input Buffering       	    */
+/*								    */
+/* **************************************************************** */
+
+static int pop_index, push_index;
+static unsigned char ibuffer[512];
+static int ibuffer_len = sizeof (ibuffer) - 1;
+
+#define any_typein (push_index != pop_index)
+
+int
+_rl_any_typein ()
+{
+  return any_typein;
+}
+
+/* Return the amount of space available in the buffer for stuffing
+   characters. */
+static int
+ibuffer_space ()
+{
+  if (pop_index > push_index)
+    return (pop_index - push_index - 1);
+  else
+    return (ibuffer_len - (push_index - pop_index));
+}
+
+/* Get a key from the buffer of characters to be read.
+   Return the key in KEY.
+   Result is KEY if there was a key, or 0 if there wasn't. */
+static int
+rl_get_char (key)
+     int *key;
+{
+  if (push_index == pop_index)
+    return (0);
+
+  *key = ibuffer[pop_index++];
+
+  if (pop_index >= ibuffer_len)
+    pop_index = 0;
+
+  return (1);
+}
+
+/* Stuff KEY into the *front* of the input buffer.
+   Returns non-zero if successful, zero if there is
+   no space left in the buffer. */
+int
+_rl_unget_char (key)
+     int key;
+{
+  if (ibuffer_space ())
+    {
+      pop_index--;
+      if (pop_index < 0)
+	pop_index = ibuffer_len - 1;
+      ibuffer[pop_index] = key;
+      return (1);
+    }
+  return (0);
+}
+
+int
+_rl_pushed_input_available ()
+{
+  return (push_index != pop_index);
+}
+
+/* If a character is available to be read, then read it and stuff it into
+   IBUFFER.  Otherwise, just return.  Returns number of characters read
+   (0 if none available) and -1 on error (EIO). */
+static int
+rl_gather_tyi ()
+{
+  int tty;
+  register int tem, result;
+  int chars_avail, k;
+  char input;
+#if defined(HAVE_SELECT)
+  fd_set readfds, exceptfds;
+  struct timeval timeout;
+#endif
+
+  tty = fileno (rl_instream);
+
+#if defined (HAVE_SELECT)
+  FD_ZERO (&readfds);
+  FD_ZERO (&exceptfds);
+  FD_SET (tty, &readfds);
+  FD_SET (tty, &exceptfds);
+  timeout.tv_sec = 0;
+  timeout.tv_usec = _keyboard_input_timeout;
+  result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout);
+  if (result <= 0)
+    return 0;	/* Nothing to read. */
+#endif
+
+  result = -1;
+#if defined (FIONREAD)
+  errno = 0;
+  result = ioctl (tty, FIONREAD, &chars_avail);
+  if (result == -1 && errno == EIO)
+    return -1;
+#endif
+
+#if defined (O_NDELAY)
+  if (result == -1)
+    {
+      tem = fcntl (tty, F_GETFL, 0);
+
+      fcntl (tty, F_SETFL, (tem | O_NDELAY));
+      chars_avail = read (tty, &input, 1);
+
+      fcntl (tty, F_SETFL, tem);
+      if (chars_avail == -1 && errno == EAGAIN)
+	return 0;
+      if (chars_avail == 0)	/* EOF */
+	{
+	  rl_stuff_char (EOF);
+	  return (0);
+	}
+    }
+#endif /* O_NDELAY */
+
+  /* If there's nothing available, don't waste time trying to read
+     something. */
+  if (chars_avail <= 0)
+    return 0;
+
+  tem = ibuffer_space ();
+
+  if (chars_avail > tem)
+    chars_avail = tem;
+
+  /* One cannot read all of the available input.  I can only read a single
+     character at a time, or else programs which require input can be
+     thwarted.  If the buffer is larger than one character, I lose.
+     Damn! */
+  if (tem < ibuffer_len)
+    chars_avail = 0;
+
+  if (result != -1)
+    {
+      while (chars_avail--)
+	{
+	  k = (*rl_getc_function) (rl_instream);
+	  rl_stuff_char (k);
+	  if (k == NEWLINE || k == RETURN)
+	    break;
+	}
+    }
+  else
+    {
+      if (chars_avail)
+	rl_stuff_char (input);
+    }
+
+  return 1;
+}
+
+int
+rl_set_keyboard_input_timeout (u)
+     int u;
+{
+  int o;
+
+  o = _keyboard_input_timeout;
+  if (u > 0)
+    _keyboard_input_timeout = u;
+  return (o);
+}
+
+/* Is there input available to be read on the readline input file
+   descriptor?  Only works if the system has select(2) or FIONREAD.
+   Uses the value of _keyboard_input_timeout as the timeout; if another
+   readline function wants to specify a timeout and not leave it up to
+   the user, it should use _rl_input_queued(timeout_value_in_microseconds)
+   instead. */
+int
+_rl_input_available ()
+{
+#if defined(HAVE_SELECT)
+  fd_set readfds, exceptfds;
+  struct timeval timeout;
+#endif
+#if !defined (HAVE_SELECT) && defined(FIONREAD)
+  int chars_avail;
+#endif
+  int tty;
+
+  tty = fileno (rl_instream);
+
+#if defined (HAVE_SELECT)
+  FD_ZERO (&readfds);
+  FD_ZERO (&exceptfds);
+  FD_SET (tty, &readfds);
+  FD_SET (tty, &exceptfds);
+  timeout.tv_sec = 0;
+  timeout.tv_usec = _keyboard_input_timeout;
+  return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0);
+#else
+
+#if defined (FIONREAD)
+  if (ioctl (tty, FIONREAD, &chars_avail) == 0)
+    return (chars_avail);
+#endif
+
+#endif
+
+  return 0;
+}
+
+int
+_rl_input_queued (t)
+     int t;
+{
+  int old_timeout, r;
+
+  old_timeout = rl_set_keyboard_input_timeout (t);
+  r = _rl_input_available ();
+  rl_set_keyboard_input_timeout (old_timeout);
+  return r;
+}
+
+void
+_rl_insert_typein (c)
+     int c;     
+{    	
+  int key, t, i;
+  char *string;
+
+  i = key = 0;
+  string = (char *)xmalloc (ibuffer_len + 1);
+  string[i++] = (char) c;
+
+  while ((t = rl_get_char (&key)) &&
+	 _rl_keymap[key].type == ISFUNC &&
+	 _rl_keymap[key].function == rl_insert)
+    string[i++] = key;
+
+  if (t)
+    _rl_unget_char (key);
+
+  string[i] = '\0';
+  rl_insert_text (string);
+  free (string);
+}
+
+/* Add KEY to the buffer of characters to be read.  Returns 1 if the
+   character was stuffed correctly; 0 otherwise. */
+int
+rl_stuff_char (key)
+     int key;
+{
+  if (ibuffer_space () == 0)
+    return 0;
+
+  if (key == EOF)
+    {
+      key = NEWLINE;
+      rl_pending_input = EOF;
+      RL_SETSTATE (RL_STATE_INPUTPENDING);
+    }
+  ibuffer[push_index++] = key;
+  if (push_index >= ibuffer_len)
+    push_index = 0;
+
+  return 1;
+}
+
+/* Make C be the next command to be executed. */
+int
+rl_execute_next (c)
+     int c;
+{
+  rl_pending_input = c;
+  RL_SETSTATE (RL_STATE_INPUTPENDING);
+  return 0;
+}
+
+/* Clear any pending input pushed with rl_execute_next() */
+int
+rl_clear_pending_input ()
+{
+  rl_pending_input = 0;
+  RL_UNSETSTATE (RL_STATE_INPUTPENDING);
+  return 0;
+}
+
+/* **************************************************************** */
+/*								    */
+/*			     Character Input			    */
+/*								    */
+/* **************************************************************** */
+
+/* Read a key, including pending input. */
+int
+rl_read_key ()
+{
+  int c;
+
+  rl_key_sequence_length++;
+
+  if (rl_pending_input)
+    {
+      c = rl_pending_input;
+      rl_clear_pending_input ();
+    }
+  else
+    {
+      /* If input is coming from a macro, then use that. */
+      if (c = _rl_next_macro_key ())
+	return (c);
+
+      /* If the user has an event function, then call it periodically. */
+      if (rl_event_hook)
+	{
+	  while (rl_event_hook && rl_get_char (&c) == 0)
+	    {
+	      (*rl_event_hook) ();
+	      if (rl_done)		/* XXX - experimental */
+		return ('\n');
+	      if (rl_gather_tyi () < 0)	/* XXX - EIO */
+		{
+		  rl_done = 1;
+		  return ('\n');
+		}
+	    }
+	}
+      else
+	{
+	  if (rl_get_char (&c) == 0)
+	    c = (*rl_getc_function) (rl_instream);
+	}
+    }
+
+  return (c);
+}
+
+int
+rl_getc (stream)
+     FILE *stream;
+{
+  int result;
+  unsigned char c;
+
+  while (1)
+    {
+#if defined (__MINGW32__)
+      if (isatty (fileno (stream)))
+	return (getch ());
+#endif
+      result = read (fileno (stream), &c, sizeof (unsigned char));
+
+      if (result == sizeof (unsigned char))
+	return (c);
+
+      /* If zero characters are returned, then the file that we are
+	 reading from is empty!  Return EOF in that case. */
+      if (result == 0)
+	return (EOF);
+
+#if defined (__BEOS__)
+      if (errno == EINTR)
+	continue;
+#endif
+
+#if defined (EWOULDBLOCK)
+#  define X_EWOULDBLOCK EWOULDBLOCK
+#else
+#  define X_EWOULDBLOCK -99
+#endif
+
+#if defined (EAGAIN)
+#  define X_EAGAIN EAGAIN
+#else
+#  define X_EAGAIN -99
+#endif
+
+      if (errno == X_EWOULDBLOCK || errno == X_EAGAIN)
+	{
+	  if (sh_unset_nodelay_mode (fileno (stream)) < 0)
+	    return (EOF);
+	  continue;
+	}
+
+#undef X_EWOULDBLOCK
+#undef X_EAGAIN
+
+      /* If the error that we received was SIGINT, then try again,
+	 this is simply an interrupted system call to read ().
+	 Otherwise, some error ocurred, also signifying EOF. */
+      if (errno != EINTR)
+	return (EOF);
+    }
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* read multibyte char */
+int
+_rl_read_mbchar (mbchar, size)
+     char *mbchar;
+     int size;
+{
+  int mb_len = 0;
+  size_t mbchar_bytes_length;
+  wchar_t wc;
+  mbstate_t ps, ps_back;
+
+  memset(&ps, 0, sizeof (mbstate_t));
+  memset(&ps_back, 0, sizeof (mbstate_t));
+  
+  while (mb_len < size)
+    {
+      RL_SETSTATE(RL_STATE_MOREINPUT);
+      mbchar[mb_len++] = rl_read_key ();
+      RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+      mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps);
+      if (mbchar_bytes_length == (size_t)(-1))
+	break;		/* invalid byte sequence for the current locale */
+      else if (mbchar_bytes_length == (size_t)(-2))
+	{
+	  /* shorted bytes */
+	  ps = ps_back;
+	  continue;
+	} 
+      else if (mbchar_bytes_length == 0)
+	{
+	  mbchar[0] = '\0';	/* null wide character */
+	  mb_len = 1;
+	  break;
+	}
+      else if (mbchar_bytes_length > (size_t)(0))
+	break;
+    }
+
+  return mb_len;
+}
+
+/* Read a multibyte-character string whose first character is FIRST into
+   the buffer MB of length MBLEN.  Returns the last character read, which
+   may be FIRST.  Used by the search functions, among others.  Very similar
+   to _rl_read_mbchar. */
+int
+_rl_read_mbstring (first, mb, mblen)
+     int first;
+     char *mb;
+     int mblen;
+{
+  int i, c;
+  mbstate_t ps;
+
+  c = first;
+  memset (mb, 0, mblen);
+  for (i = 0; i < mblen; i++)
+    {
+      mb[i] = (char)c;
+      memset (&ps, 0, sizeof (mbstate_t));
+      if (_rl_get_char_len (mb, &ps) == -2)
+	{
+	  /* Read more for multibyte character */
+	  RL_SETSTATE (RL_STATE_MOREINPUT);
+	  c = rl_read_key ();
+	  RL_UNSETSTATE (RL_STATE_MOREINPUT);
+	}
+      else
+	break;
+    }
+  return c;
+}
+#endif /* HANDLE_MULTIBYTE */

lib/readline/terminal.c

@@ -122,7 +122,7 @@ char *_rl_term_up;
 static char *_rl_visible_bell;
 
 /* Non-zero means the terminal can auto-wrap lines. */
-int _rl_term_autowrap;
+int _rl_term_autowrap = -1;
 
 /* Non-zero means that this terminal has a meta key. */
 static int term_has_meta;
@@ -274,6 +274,9 @@ void
 _rl_set_screen_size (rows, cols)
      int rows, cols;
 {
+  if (_rl_term_autowrap == -1)
+    _rl_init_terminal_io (rl_terminal_name);
+
   if (rows > 0)
     _rl_screenheight = rows;
   if (cols > 0)

lib/readline/terminal.c~

@@ -0,0 +1,701 @@
+/* terminal.c -- controlling the terminal with termcap. */
+
+/* Copyright (C) 1996-2005 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.
+
+   The GNU Readline Library 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 2, or
+   (at your option) any later version.
+
+   The GNU Readline Library 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.
+
+   The GNU General Public License is often shipped with GNU software, and
+   is generally kept in a file called COPYING or LICENSE.  If you do not
+   have a copy of the license, write to the Free Software Foundation,
+   59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
+
+#include <sys/types.h>
+#include "posixstat.h"
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+#  include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+#  include <locale.h>
+#endif
+
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+#if defined (GWINSZ_IN_SYS_IOCTL) && !defined (TIOCGWINSZ)
+#  include <sys/ioctl.h>
+#endif /* GWINSZ_IN_SYS_IOCTL && !TIOCGWINSZ */
+
+#include "rltty.h"
+#include "tcap.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+#define CUSTOM_REDISPLAY_FUNC() (rl_redisplay_function != rl_redisplay)
+#define CUSTOM_INPUT_FUNC() (rl_getc_function != rl_getc)
+
+int rl_prefer_env_winsize;
+
+/* **************************************************************** */
+/*								    */
+/*			Terminal and Termcap			    */
+/*								    */
+/* **************************************************************** */
+
+static char *term_buffer = (char *)NULL;
+static char *term_string_buffer = (char *)NULL;
+
+static int tcap_initialized;
+
+#if !defined (__linux__)
+#  if defined (__EMX__) || defined (NEED_EXTERN_PC)
+extern 
+#  endif /* __EMX__ || NEED_EXTERN_PC */
+char PC, *BC, *UP;
+#endif /* __linux__ */
+
+/* Some strings to control terminal actions.  These are output by tputs (). */
+char *_rl_term_clreol;
+char *_rl_term_clrpag;
+char *_rl_term_cr;
+char *_rl_term_backspace;
+char *_rl_term_goto;
+char *_rl_term_pc;
+
+/* Non-zero if we determine that the terminal can do character insertion. */
+int _rl_terminal_can_insert = 0;
+
+/* How to insert characters. */
+char *_rl_term_im;
+char *_rl_term_ei;
+char *_rl_term_ic;
+char *_rl_term_ip;
+char *_rl_term_IC;
+
+/* How to delete characters. */
+char *_rl_term_dc;
+char *_rl_term_DC;
+
+#if defined (HACK_TERMCAP_MOTION)
+char *_rl_term_forward_char;
+#endif  /* HACK_TERMCAP_MOTION */
+
+/* How to go up a line. */
+char *_rl_term_up;
+
+/* A visible bell; char if the terminal can be made to flash the screen. */
+static char *_rl_visible_bell;
+
+/* Non-zero means the terminal can auto-wrap lines. */
+int _rl_term_autowrap;
+
+/* Non-zero means that this terminal has a meta key. */
+static int term_has_meta;
+
+/* The sequences to write to turn on and off the meta key, if this
+   terminal has one. */
+static char *_rl_term_mm;
+static char *_rl_term_mo;
+
+/* The key sequences output by the arrow keys, if this terminal has any. */
+static char *_rl_term_ku;
+static char *_rl_term_kd;
+static char *_rl_term_kr;
+static char *_rl_term_kl;
+
+/* How to initialize and reset the arrow keys, if this terminal has any. */
+static char *_rl_term_ks;
+static char *_rl_term_ke;
+
+/* The key sequences sent by the Home and End keys, if any. */
+static char *_rl_term_kh;
+static char *_rl_term_kH;
+static char *_rl_term_at7;	/* @7 */
+
+/* Delete key */
+static char *_rl_term_kD;
+
+/* Insert key */
+static char *_rl_term_kI;
+
+/* Cursor control */
+static char *_rl_term_vs;	/* very visible */
+static char *_rl_term_ve;	/* normal */
+
+static void bind_termcap_arrow_keys PARAMS((Keymap));
+
+/* Variables that hold the screen dimensions, used by the display code. */
+int _rl_screenwidth, _rl_screenheight, _rl_screenchars;
+
+/* Non-zero means the user wants to enable the keypad. */
+int _rl_enable_keypad;
+
+/* Non-zero means the user wants to enable a meta key. */
+int _rl_enable_meta = 1;
+
+#if defined (__EMX__)
+static void
+_emx_get_screensize (swp, shp)
+     int *swp, *shp;
+{
+  int sz[2];
+
+  _scrsize (sz);
+
+  if (swp)
+    *swp = sz[0];
+  if (shp)
+    *shp = sz[1];
+}
+#endif
+
+/* Get readline's idea of the screen size.  TTY is a file descriptor open
+   to the terminal.  If IGNORE_ENV is true, we do not pay attention to the
+   values of $LINES and $COLUMNS.  The tests for TERM_STRING_BUFFER being
+   non-null serve to check whether or not we have initialized termcap. */
+void
+_rl_get_screen_size (tty, ignore_env)
+     int tty, ignore_env;
+{
+  char *ss;
+#if defined (TIOCGWINSZ)
+  struct winsize window_size;
+#endif /* TIOCGWINSZ */
+  int wr, wc;
+
+  wr = wc = -1;
+#if defined (TIOCGWINSZ)
+  if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
+    {
+      wc = (int) window_size.ws_col;
+      wr = (int) window_size.ws_row;
+    }
+#endif /* TIOCGWINSZ */
+
+#if defined (__EMX__)
+  _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
+#endif
+
+  if (ignore_env || rl_prefer_env_winsize == 0)
+    {
+      _rl_screenwidth = wc;
+      _rl_screenheight = wr;
+    }
+  else
+    _rl_screenwidth = _rl_screenheight = -1;
+
+  /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
+     is unset.  If we prefer the environment, check it first before
+     assigning the value returned by the kernel. */
+  if (_rl_screenwidth <= 0)
+    {
+      if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS")))
+	_rl_screenwidth = atoi (ss);
+
+      if (_rl_screenwidth <= 0)
+        _rl_screenwidth = wc;
+
+#if !defined (__DJGPP__)
+      if (_rl_screenwidth <= 0 && term_string_buffer)
+	_rl_screenwidth = tgetnum ("co");
+#endif
+    }
+
+  /* Environment variable LINES overrides setting of "li" if IGNORE_ENV
+     is unset. */
+  if (_rl_screenheight <= 0)
+    {
+      if (ignore_env == 0 && (ss = sh_get_env_value ("LINES")))
+	_rl_screenheight = atoi (ss);
+
+      if (_rl_screenheight <= 0)
+        _rl_screenheight = wr;
+
+#if !defined (__DJGPP__)
+      if (_rl_screenheight <= 0 && term_string_buffer)
+	_rl_screenheight = tgetnum ("li");
+#endif
+    }
+
+  /* If all else fails, default to 80x24 terminal. */
+  if (_rl_screenwidth <= 1)
+    _rl_screenwidth = 80;
+
+  if (_rl_screenheight <= 0)
+    _rl_screenheight = 24;
+
+  /* If we're being compiled as part of bash, set the environment
+     variables $LINES and $COLUMNS to new values.  Otherwise, just
+     do a pair of putenv () or setenv () calls. */
+  sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth);
+
+  if (_rl_term_autowrap == 0)
+    _rl_screenwidth--;
+
+  _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+}
+
+void
+_rl_set_screen_size (rows, cols)
+     int rows, cols;
+{
+  if (RL_ISSTATE(RL_STATE_INITIALIZED) == 0)
+    _rl_init_terminal_io (rl_terminal_name);
+
+  if (rows > 0)
+    _rl_screenheight = rows;
+  if (cols > 0)
+    {
+      _rl_screenwidth = cols;
+      if (_rl_term_autowrap == 0)
+	_rl_screenwidth--;
+    }
+
+  if (rows > 0 || cols > 0)
+    _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+}
+
+void
+rl_set_screen_size (rows, cols)
+     int rows, cols;
+{
+  _rl_set_screen_size (rows, cols);
+}
+
+void
+rl_get_screen_size (rows, cols)
+     int *rows, *cols;
+{
+  if (rows)
+    *rows = _rl_screenheight;
+  if (cols)
+    *cols = _rl_screenwidth;
+}
+
+void
+rl_reset_screen_size ()
+{
+  _rl_get_screen_size (fileno (rl_instream), 0);
+}
+     
+void
+rl_resize_terminal ()
+{
+  if (readline_echoing_p)
+    {
+      _rl_get_screen_size (fileno (rl_instream), 1);
+      if (CUSTOM_REDISPLAY_FUNC ())
+	rl_forced_update_display ();
+      else
+	_rl_redisplay_after_sigwinch ();
+    }
+}
+
+struct _tc_string {
+     const char *tc_var;
+     char **tc_value;
+};
+
+/* This should be kept sorted, just in case we decide to change the
+   search algorithm to something smarter. */
+static struct _tc_string tc_strings[] =
+{
+  { "@7", &_rl_term_at7 },
+  { "DC", &_rl_term_DC },
+  { "IC", &_rl_term_IC },
+  { "ce", &_rl_term_clreol },
+  { "cl", &_rl_term_clrpag },
+  { "cr", &_rl_term_cr },
+  { "dc", &_rl_term_dc },
+  { "ei", &_rl_term_ei },
+  { "ic", &_rl_term_ic },
+  { "im", &_rl_term_im },
+  { "kD", &_rl_term_kD },	/* delete */
+  { "kH", &_rl_term_kH },	/* home down ?? */
+  { "kI", &_rl_term_kI },	/* insert */
+  { "kd", &_rl_term_kd },
+  { "ke", &_rl_term_ke },	/* end keypad mode */
+  { "kh", &_rl_term_kh },	/* home */
+  { "kl", &_rl_term_kl },
+  { "kr", &_rl_term_kr },
+  { "ks", &_rl_term_ks },	/* start keypad mode */
+  { "ku", &_rl_term_ku },
+  { "le", &_rl_term_backspace },
+  { "mm", &_rl_term_mm },
+  { "mo", &_rl_term_mo },
+#if defined (HACK_TERMCAP_MOTION)
+  { "nd", &_rl_term_forward_char },
+#endif
+  { "pc", &_rl_term_pc },
+  { "up", &_rl_term_up },
+  { "vb", &_rl_visible_bell },
+  { "vs", &_rl_term_vs },
+  { "ve", &_rl_term_ve },
+};
+
+#define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string))
+
+/* Read the desired terminal capability strings into BP.  The capabilities
+   are described in the TC_STRINGS table. */
+static void
+get_term_capabilities (bp)
+     char **bp;
+{
+#if !defined (__DJGPP__)	/* XXX - doesn't DJGPP have a termcap library? */
+  register int i;
+
+  for (i = 0; i < NUM_TC_STRINGS; i++)
+    *(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp);
+#endif
+  tcap_initialized = 1;
+}
+
+int
+_rl_init_terminal_io (terminal_name)
+     const char *terminal_name;
+{
+  const char *term;
+  char *buffer;
+  int tty, tgetent_ret;
+
+  term = terminal_name ? terminal_name : sh_get_env_value ("TERM");
+  _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL;
+  tty = rl_instream ? fileno (rl_instream) : 0;
+
+  if (term == 0)
+    term = "dumb";
+
+  /* I've separated this out for later work on not calling tgetent at all
+     if the calling application has supplied a custom redisplay function,
+     (and possibly if the application has supplied a custom input function). */
+  if (CUSTOM_REDISPLAY_FUNC())
+    {
+      tgetent_ret = -1;
+    }
+  else
+    {
+      if (term_string_buffer == 0)
+	term_string_buffer = (char *)xmalloc(2032);
+
+      if (term_buffer == 0)
+	term_buffer = (char *)xmalloc(4080);
+
+      buffer = term_string_buffer;
+
+      tgetent_ret = tgetent (term_buffer, term);
+    }
+
+  if (tgetent_ret <= 0)
+    {
+      FREE (term_string_buffer);
+      FREE (term_buffer);
+      buffer = term_buffer = term_string_buffer = (char *)NULL;
+
+      _rl_term_autowrap = 0;	/* used by _rl_get_screen_size */
+
+      /* Allow calling application to set default height and width, using
+	 rl_set_screen_size */
+      if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
+	{
+#if defined (__EMX__)
+	  _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
+	  _rl_screenwidth--;
+#else /* !__EMX__ */
+	  _rl_get_screen_size (tty, 0);
+#endif /* !__EMX__ */
+	}
+
+      /* Defaults. */
+      if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
+        {
+	  _rl_screenwidth = 79;
+	  _rl_screenheight = 24;
+        }
+
+      /* Everything below here is used by the redisplay code (tputs). */
+      _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+      _rl_term_cr = "\r";
+      _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;
+      _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;
+      _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL;
+      _rl_term_kh = _rl_term_kH = _rl_term_kI = _rl_term_kD = (char *)NULL;
+      _rl_term_ks = _rl_term_ke = _rl_term_at7 = (char *)NULL;
+      _rl_term_mm = _rl_term_mo = (char *)NULL;
+      _rl_term_ve = _rl_term_vs = (char *)NULL;
+#if defined (HACK_TERMCAP_MOTION)
+      term_forward_char = (char *)NULL;
+#endif
+      _rl_terminal_can_insert = term_has_meta = 0;
+
+      /* Reasonable defaults for tgoto().  Readline currently only uses
+         tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we
+         change that later... */
+      PC = '\0';
+      BC = _rl_term_backspace = "\b";
+      UP = _rl_term_up;
+
+      return 0;
+    }
+
+  get_term_capabilities (&buffer);
+
+  /* Set up the variables that the termcap library expects the application
+     to provide. */
+  PC = _rl_term_pc ? *_rl_term_pc : 0;
+  BC = _rl_term_backspace;
+  UP = _rl_term_up;
+
+  if (!_rl_term_cr)
+    _rl_term_cr = "\r";
+
+  _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
+
+  /* Allow calling application to set default height and width, using
+     rl_set_screen_size */
+  if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
+    _rl_get_screen_size (tty, 0);
+
+  /* "An application program can assume that the terminal can do
+      character insertion if *any one of* the capabilities `IC',
+      `im', `ic' or `ip' is provided."  But we can't do anything if
+      only `ip' is provided, so... */
+  _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_term_ic);
+
+  /* Check to see if this terminal has a meta key and clear the capability
+     variables if there is none. */
+  term_has_meta = (tgetflag ("km") || tgetflag ("MT"));
+  if (!term_has_meta)
+    _rl_term_mm = _rl_term_mo = (char *)NULL;
+
+  /* Attempt to find and bind the arrow keys.  Do not override already
+     bound keys in an overzealous attempt, however. */
+
+  bind_termcap_arrow_keys (emacs_standard_keymap);
+
+#if defined (VI_MODE)
+  bind_termcap_arrow_keys (vi_movement_keymap);
+  bind_termcap_arrow_keys (vi_insertion_keymap);
+#endif /* VI_MODE */
+
+  return 0;
+}
+
+/* Bind the arrow key sequences from the termcap description in MAP. */
+static void
+bind_termcap_arrow_keys (map)
+     Keymap map;
+{
+  Keymap xkeymap;
+
+  xkeymap = _rl_keymap;
+  _rl_keymap = map;
+
+  rl_bind_keyseq_if_unbound (_rl_term_ku, rl_get_previous_history);
+  rl_bind_keyseq_if_unbound (_rl_term_kd, rl_get_next_history);
+  rl_bind_keyseq_if_unbound (_rl_term_kr, rl_forward_char);
+  rl_bind_keyseq_if_unbound (_rl_term_kl, rl_backward_char);
+
+  rl_bind_keyseq_if_unbound (_rl_term_kh, rl_beg_of_line);	/* Home */
+  rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line);	/* End */
+
+  rl_bind_keyseq_if_unbound (_rl_term_kD, rl_delete);
+
+  _rl_keymap = xkeymap;
+}
+
+char *
+rl_get_termcap (cap)
+     const char *cap;
+{
+  register int i;
+
+  if (tcap_initialized == 0)
+    return ((char *)NULL);
+  for (i = 0; i < NUM_TC_STRINGS; i++)
+    {
+      if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0)
+        return *(tc_strings[i].tc_value);
+    }
+  return ((char *)NULL);
+}
+
+/* Re-initialize the terminal considering that the TERM/TERMCAP variable
+   has changed. */
+int
+rl_reset_terminal (terminal_name)
+     const char *terminal_name;
+{
+  _rl_screenwidth = _rl_screenheight = 0;
+  _rl_init_terminal_io (terminal_name);
+  return 0;
+}
+
+/* A function for the use of tputs () */
+#ifdef _MINIX
+void
+_rl_output_character_function (c)
+     int c;
+{
+  putc (c, _rl_out_stream);
+}
+#else /* !_MINIX */
+int
+_rl_output_character_function (c)
+     int c;
+{
+  return putc (c, _rl_out_stream);
+}
+#endif /* !_MINIX */
+
+/* Write COUNT characters from STRING to the output stream. */
+void
+_rl_output_some_chars (string, count)
+     const char *string;
+     int count;
+{
+  fwrite (string, 1, count, _rl_out_stream);
+}
+
+/* Move the cursor back. */
+int
+_rl_backspace (count)
+     int count;
+{
+  register int i;
+
+  if (_rl_term_backspace)
+    for (i = 0; i < count; i++)
+      tputs (_rl_term_backspace, 1, _rl_output_character_function);
+  else
+    for (i = 0; i < count; i++)
+      putc ('\b', _rl_out_stream);
+  return 0;
+}
+
+/* Move to the start of the next line. */
+int
+rl_crlf ()
+{
+#if defined (NEW_TTY_DRIVER)
+  if (_rl_term_cr)
+    tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif /* NEW_TTY_DRIVER */
+  putc ('\n', _rl_out_stream);
+  return 0;
+}
+
+/* Ring the terminal bell. */
+int
+rl_ding ()
+{
+  if (readline_echoing_p)
+    {
+      switch (_rl_bell_preference)
+        {
+	case NO_BELL:
+	default:
+	  break;
+	case VISIBLE_BELL:
+	  if (_rl_visible_bell)
+	    {
+	      tputs (_rl_visible_bell, 1, _rl_output_character_function);
+	      break;
+	    }
+	  /* FALLTHROUGH */
+	case AUDIBLE_BELL:
+	  fprintf (stderr, "\007");
+	  fflush (stderr);
+	  break;
+        }
+      return (0);
+    }
+  return (-1);
+}
+
+/* **************************************************************** */
+/*								    */
+/*	 	Controlling the Meta Key and Keypad		    */
+/*								    */
+/* **************************************************************** */
+
+void
+_rl_enable_meta_key ()
+{
+#if !defined (__DJGPP__)
+  if (term_has_meta && _rl_term_mm)
+    tputs (_rl_term_mm, 1, _rl_output_character_function);
+#endif
+}
+
+void
+_rl_control_keypad (on)
+     int on;
+{
+#if !defined (__DJGPP__)
+  if (on && _rl_term_ks)
+    tputs (_rl_term_ks, 1, _rl_output_character_function);
+  else if (!on && _rl_term_ke)
+    tputs (_rl_term_ke, 1, _rl_output_character_function);
+#endif
+}
+
+/* **************************************************************** */
+/*								    */
+/*	 		Controlling the Cursor			    */
+/*								    */
+/* **************************************************************** */
+
+/* Set the cursor appropriately depending on IM, which is one of the
+   insert modes (insert or overwrite).  Insert mode gets the normal
+   cursor.  Overwrite mode gets a very visible cursor.  Only does
+   anything if we have both capabilities. */
+void
+_rl_set_cursor (im, force)
+     int im, force;
+{
+  if (_rl_term_ve && _rl_term_vs)
+    {
+      if (force || im != rl_insert_mode)
+	{
+	  if (im == RL_IM_OVERWRITE)
+	    tputs (_rl_term_vs, 1, _rl_output_character_function);
+	  else
+	    tputs (_rl_term_ve, 1, _rl_output_character_function);
+	}
+    }
+}

lib/readline/vi_mode.c

@@ -109,12 +109,16 @@ static int vi_mark_chars['z' - 'a' + 1];
 static void _rl_vi_stuff_insert PARAMS((int));
 static void _rl_vi_save_insert PARAMS((UNDO_LIST *));
 
+static void _rl_vi_backup PARAMS((void));
+
 static int _rl_vi_arg_dispatch PARAMS((int));
 static int rl_digit_loop1 PARAMS((void));
 
 static int _rl_vi_set_mark PARAMS((void));
 static int _rl_vi_goto_mark PARAMS((void));
 
+static void _rl_vi_append_forward PARAMS((int));
+
 static int _rl_vi_callback_getchar PARAMS((char *, int));
 
 #if defined (READLINE_CALLBACKS)
@@ -205,7 +209,16 @@ rl_vi_redo (count, c)
       _rl_vi_stuff_insert (count);
       /* And back up point over the last character inserted. */
       if (rl_point > 0)
-	rl_point--;
+	_rl_vi_backup ();
+    }
+  /* Ditto for redoing an insert with `a', but move forward a character first
+     like the `a' command does. */
+  else if (_rl_vi_last_command == 'a' && vi_insert_buffer && *vi_insert_buffer)
+    {
+      _rl_vi_append_forward ('a');
+      _rl_vi_stuff_insert (count);
+      if (rl_point > 0)
+	_rl_vi_backup ();
     }
   else
     r = _rl_dispatch (_rl_vi_last_command, _rl_keymap);
@@ -575,23 +588,32 @@ rl_vi_insert_beg (count, key)
   return (0);
 }
 
-int
-rl_vi_append_mode (count, key)
-     int count, key;
+static void
+_rl_vi_append_forward (key)
+     int key;
 {
+  int point;
+
   if (rl_point < rl_end)
     {
       if (MB_CUR_MAX == 1 || rl_byte_oriented)
 	rl_point++;
       else
         {
-          int point = rl_point;
+          point = rl_point;
           rl_forward_char (1, key);
           if (point == rl_point)
             rl_point = rl_end;
         }
     }
-  rl_vi_insertion_mode (1, key);
+}
+
+int
+rl_vi_append_mode (count, key)
+     int count, key;
+{
+  _rl_vi_append_forward (key);
+  rl_vi_start_inserting (key, 1, rl_arg_sign);
   return (0);
 }
 
@@ -631,7 +653,7 @@ _rl_vi_save_insert (up)
 {
   int len, start, end;
 
-  if (up == 0)
+  if (up == 0 || up->what != UNDO_INSERT)
     {
       if (vi_insert_buffer_size >= 1)
 	vi_insert_buffer[0] = '\0';
@@ -820,6 +842,15 @@ rl_vi_put (count, key)
   return (0);
 }
 
+static void
+_rl_vi_backup ()
+{
+  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+    rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+  else
+    rl_point--;
+}
+
 int
 rl_vi_check ()
 {

lib/readline/vi_mode.c~

@@ -109,12 +109,16 @@ static int vi_mark_chars['z' - 'a' + 1];
 static void _rl_vi_stuff_insert PARAMS((int));
 static void _rl_vi_save_insert PARAMS((UNDO_LIST *));
 
+static void _rl_vi_backup PARAMS((void));
+
 static int _rl_vi_arg_dispatch PARAMS((int));
 static int rl_digit_loop1 PARAMS((void));
 
 static int _rl_vi_set_mark PARAMS((void));
 static int _rl_vi_goto_mark PARAMS((void));
 
+static void _rl_vi_append_forward PARAMS((int));
+
 static int _rl_vi_callback_getchar PARAMS((char *, int));
 
 #if defined (READLINE_CALLBACKS)
@@ -205,7 +209,16 @@ rl_vi_redo (count, c)
       _rl_vi_stuff_insert (count);
       /* And back up point over the last character inserted. */
       if (rl_point > 0)
-	rl_point--;
+	_rl_vi_backup ();
+    }
+  /* Ditto for redoing an insert with `a', but move forward a character first
+     like the `a' command does. */
+  else if (_rl_vi_last_command == 'a' && vi_insert_buffer && *vi_insert_buffer)
+    {
+      _rl_vi_append_forward ('a');
+      _rl_vi_stuff_insert (count);
+      if (rl_point > 0)
+	_rl_vi_backup ();
     }
   else
     r = _rl_dispatch (_rl_vi_last_command, _rl_keymap);
@@ -575,23 +588,32 @@ rl_vi_insert_beg (count, key)
   return (0);
 }
 
-int
-rl_vi_append_mode (count, key)
-     int count, key;
+static void
+_rl_vi_append_forward (key)
+     int key;
 {
+  int point;
+
   if (rl_point < rl_end)
     {
       if (MB_CUR_MAX == 1 || rl_byte_oriented)
 	rl_point++;
       else
         {
-          int point = rl_point;
+          point = rl_point;
           rl_forward_char (1, key);
           if (point == rl_point)
             rl_point = rl_end;
         }
     }
-  rl_vi_insertion_mode (1, key);
+}
+
+int
+rl_vi_append_mode (count, key)
+     int count, key;
+{
+  _rl_vi_append_forward (key);
+  rl_vi_start_inserting (key, 1, rl_arg_sign);
   return (0);
 }
 
@@ -820,6 +842,15 @@ rl_vi_put (count, key)
   return (0);
 }
 
+static void
+_rl_vi_backup ()
+{
+  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+    rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+  else
+    rl_point--;
+}
+
 int
 rl_vi_check ()
 {
@@ -1111,7 +1142,7 @@ int
 rl_vi_rubout (count, key)
      int count, key;
 {
-  int p, opoint;
+  int opoint;
 
   if (count < 0)
     return (rl_vi_delete (-count, key));