diff --git a/bash-5.1/Cargo.toml b/bash-5.1/Cargo.toml
index 80a43ed56efe71b9164ed6e08fac898cf5deecd6..7682d3e934a2fa985005ecd300f6dd4a5636c8e9 100644
--- a/bash-5.1/Cargo.toml
+++ b/bash-5.1/Cargo.toml
@@ -9,7 +9,10 @@ crate-type = ["cdylib"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [workspace]
 members = ["builtins_rust/read", "builtins/command1", "builtins/command2", "builtins_rust/history", "builtins_rust/kill",
-"builtins_rust/rlet", "builtins_rust/mapfile", "builtins_rust/printf", "builtins_rust/rreturn"]
+"builtins_rust/rlet", "builtins_rust/mapfile", "builtins_rust/printf", "builtins_rust/rreturn", "builtins_rust/shift",
+"builtins_rust/times","builtins_rust/suspend", "builtins_rust/test",
+"builtins_rust/jobs","builtins_rust/cd", "builtins_rust/fg_bg",
+"builtins_rust/fc","builtins_rust/getopts"]
 
 [dependencies]
 libc = "0.2"
@@ -22,3 +25,12 @@ rlet = {path = "./builtins_rust/rlet"}
 mapfile = {path = "./builtins_rust/mapfile"}
 printf = {path = "./builtins_rust/printf"}
 rreturn = {path = "./builtins_rust/rreturn"}
+shift = {path = "./builtins_rust/shift"}
+times = {path = "./builtins_rust/times"}
+suspend = {path = "./builtins_rust/suspend"}
+test = {path = "./builtins_rust/test"}
+rjobs = {path = "./builtins_rust/jobs"}
+rcd = {path = "./builtins_rust/cd"}
+rfg_bg = {path = "./builtins_rust/fg_bg"}
+rfc = {path = "./builtins_rust/fc"}
+rgetopts = {path = "./builtins_rust/getopts"}
diff --git a/bash-5.1/Makefile.in b/bash-5.1/Makefile.in
index 3d5119a07e9b5f44c74e9837c994ebfe89062f96..eb6bf32b7c50c74f1037f9502a5fbd798755b7e4 100644
--- a/bash-5.1/Makefile.in
+++ b/bash-5.1/Makefile.in
@@ -107,7 +107,7 @@ OBJEXT = @OBJEXT@
 VERSPROG = bashversion$(EXEEXT)
 VERSOBJ = bashversion.$(OBJEXT)
 
-Program = bash$(EXEEXT)
+Program = rush$(EXEEXT)
 Version = @BASHVERS@
 PatchLevel = `$(BUILD_DIR)/$(VERSPROG) -p`
 RELSTATUS = @RELSTATUS@
@@ -530,8 +530,8 @@ GETOPT_SOURCE   = $(DEFSRC)/getopt.c $(DEFSRC)/getopt.h
 PSIZE_SOURCE	= $(DEFSRC)/psize.sh $(DEFSRC)/psize.c
 
 BUILTINS_LIBRARY = $(DEFDIR)/libbuiltins.a
-BUILTINS_LIB = -lbuiltins
-BUILTINS_LDFLAGS = -L$(DEFDIR)
+BUILTINS_LIB = -lbuiltins -lrfg_bg -lrgetopts -lrcd -lrfc -lrjobs -lrread
+BUILTINS_LDFLAGS = -L$(DEFDIR) -L@RUSH_LIB@
 BUILTINS_DEP = $(BUILTINS_LIBRARY)
 
 # Documentation for the shell.
diff --git a/bash-5.1/build.md b/bash-5.1/build.md
new file mode 100644
index 0000000000000000000000000000000000000000..346c8025ef905418d560b2ac70bf60c816dd8236
--- /dev/null
+++ b/bash-5.1/build.md
@@ -0,0 +1,15 @@
+# 生成rust重写指令的so
+cargo build --release
+
+# 准备依赖库
+sudo mkdir -p /opt/rush/lib/
+sudo cp target/release/deps/*.so /opt/rush/lib/
+
+# 配置链接库
+sudo cat > /etc/ld.so.conf.d/rush.conf << EOF
+/opt/rush/lib
+EOF
+sudo ldconfig
+
+./configure
+make
diff --git a/bash-5.1/builtins/cd.def b/bash-5.1/builtins/cd.def
index 7205608c672239ba4119a5b6b0252212f2130360..8d2fee6b3fdaf9dfaf91ba2063340fd8ae1fbbf4 100644
--- a/bash-5.1/builtins/cd.def
+++ b/bash-5.1/builtins/cd.def
@@ -266,6 +266,12 @@ resetxattr ()
 int
 cd_builtin (list)
      WORD_LIST *list;
+{
+    return r_cd_builtin(list);
+}
+int
+__cd_builtin (list)
+     WORD_LIST *list;
 {
   char *dirname, *cdpath, *path, *temp;
   int path_index, no_symlinks, opt, lflag, e;
@@ -484,6 +490,12 @@ static int verbatim_pwd;
 int
 pwd_builtin (list)
      WORD_LIST *list;
+{
+    return r_pwd_builtin(list);
+}
+int
+__pwd_builtin (list)
+     WORD_LIST *list;
 {
   char *directory;
   int opt, pflag;
diff --git a/bash-5.1/builtins/fc.def b/bash-5.1/builtins/fc.def
index 467dbcbcc33a89b02e228dd442f5c221a02b22bf..c9c15a8ee8ecb687221e0affe7586f91e3e783e8 100644
--- a/bash-5.1/builtins/fc.def
+++ b/bash-5.1/builtins/fc.def
@@ -181,6 +181,12 @@ set_verbose_flag ()
 int
 fc_builtin (list)
      WORD_LIST *list;
+{
+    return r_fc_builtin(list);
+}
+int
+__fc_builtin (list)
+     WORD_LIST *list;
 {
   register int i;
   register char *sep;
diff --git a/bash-5.1/builtins/fg_bg.def b/bash-5.1/builtins/fg_bg.def
index 0fb53223d447cbc93328337ec5b4e8809c2d4e7d..78a93e43e2a1d157e042e2f3d033d08c0345f238 100644
--- a/bash-5.1/builtins/fg_bg.def
+++ b/bash-5.1/builtins/fg_bg.def
@@ -58,6 +58,12 @@ static int fg_bg PARAMS((WORD_LIST *, int));
 int
 fg_builtin (list)
      WORD_LIST *list;
+{
+    return r_fg_builtin(list);
+}
+int
+__fg_builtin (list)
+     WORD_LIST *list;
 {
   int fg_bit;
   register WORD_LIST *t;
@@ -103,6 +109,12 @@ $END
 int
 bg_builtin (list)
      WORD_LIST *list;
+{
+    return r_bg_builtin(list);
+}
+int
+__bg_builtin (list)
+     WORD_LIST *list;
 {
   int r;
 
diff --git a/bash-5.1/builtins/getopts.def b/bash-5.1/builtins/getopts.def
index 4c39c474cca04c679f93ff143d51fef6eea14300..1d7490dccd3f89019c45d167e895ced22eed9add 100644
--- a/bash-5.1/builtins/getopts.def
+++ b/bash-5.1/builtins/getopts.def
@@ -314,6 +314,12 @@ dogetopts (argc, argv)
 int
 getopts_builtin (list)
      WORD_LIST *list;
+{
+    return r_getopts_builtin(list);
+}
+int
+__getopts_builtin (list)
+     WORD_LIST *list;
 {
   char **av;
   int ac, ret;
diff --git a/bash-5.1/builtins/jobs.def b/bash-5.1/builtins/jobs.def
index 1ce098d08be2b1a72b1f89284bcad48021778df0..c18de1e6c9294e8cda135adc30ced7453ba307d5 100644
--- a/bash-5.1/builtins/jobs.def
+++ b/bash-5.1/builtins/jobs.def
@@ -81,6 +81,12 @@ static int execute_list_with_replacements PARAMS((WORD_LIST *));
 int
 jobs_builtin (list)
      WORD_LIST *list;
+{
+    return r_jobs_builtin(list);
+}
+int
+__jobs_builtin (list)
+     WORD_LIST *list;
 {
   int form, execute, state, opt, any_failed, job;
   sigset_t set, oset;
@@ -233,6 +239,12 @@ $END
 int
 disown_builtin (list)
      WORD_LIST *list;
+{
+    return r_disown_builtin(list);
+}
+int
+__disown_builtin (list)
+     WORD_LIST *list;
 {
   int opt, job, retval, nohup_only, running_jobs, all_jobs;
   sigset_t set, oset;
diff --git a/bash-5.1/builtins/read.def b/bash-5.1/builtins/read.def
index 6e1f53751118c92ec8349a7c0648f46fdcb61bfd..f8741eb802d2885307dab6158bce28c7157dd4c2 100644
--- a/bash-5.1/builtins/read.def
+++ b/bash-5.1/builtins/read.def
@@ -1,3 +1,23 @@
+This file is read.def, from which is created read.c.
+It implements the builtin "read" in Bash.
+
+Copyright (C) 1987-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Bash, the Bourne Again SHell.
+
+Bash 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 3 of the License, or
+(at your option) any later version.
+
+Bash 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.
+
+You should have received a copy of the GNU General Public License
+along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+
 $PRODUCES read.c
 
 $BUILTIN read
@@ -92,11 +112,59 @@ $END
 extern int errno;
 #endif
 
-extern int r_read_builtin (WORD_LIST *);
+struct ttsave
+{
+  int fd;
+  TTYSTRUCT attrs;
+};
 
+#if defined (READLINE)
+static void reset_attempted_completion_function PARAMS((char *));
+static int set_itext PARAMS((void));
+static char *edit_line PARAMS((char *, char *));
+static void set_eol_delim PARAMS((int));
+static void reset_eol_delim PARAMS((char *));
+#endif
+static SHELL_VAR *bind_read_variable PARAMS((char *, char *));
+#if defined (HANDLE_MULTIBYTE)
+static int read_mbchar PARAMS((int, char *, int, int, int));
+#endif
+static void ttyrestore PARAMS((struct ttsave *));
+
+static sighandler sigalrm PARAMS((int));
+static void reset_alarm PARAMS((void));
+
+/* Try this to see what the rest of the shell can do with the information. */
 procenv_t alrmbuf;
 int sigalrm_seen;
 
+static int reading, tty_modified;
+static SigHandler *old_alrm;
+static unsigned char delim;
+
+static struct ttsave termsave;
+
+/* In all cases, SIGALRM just sets a flag that we check periodically.  This
+   avoids problems with the semi-tricky stuff we do with the xfree of
+   input_string at the top of the unwind-protect list (see below). */
+
+/* Set a flag that CHECK_ALRM can check.  This relies on zread or read_builtin
+   calling trap.c:check_signals(), which knows about sigalrm_seen and alrmbuf. */
+static sighandler
+sigalrm (s)
+     int s;
+{
+  sigalrm_seen = 1;
+}
+
+static void
+reset_alarm ()
+{
+  /* Cancel alarm before restoring signal handler. */
+  falarm (0, 0);
+  set_signal_handler (SIGALRM, old_alrm);
+}
+
 /* Read the value of the shell variables whose names follow.
    The reading is done from the current input stream, whatever
    that may be.  Successive words of the input line are assigned
@@ -107,18 +175,1022 @@ int
 read_builtin (list)
      WORD_LIST *list;
 {
-    r_read_builtin(list);
+    return r_read_builtin(list);
+}
+int
+__read_builtin (list)
+     WORD_LIST *list;
+{
+  register char *varname;
+  int size, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2, nflag;
+  volatile int i;
+  int input_is_tty, input_is_pipe, unbuffered_read, skip_ctlesc, skip_ctlnul;
+  int raw, edit, nchars, silent, have_timeout, ignore_delim, fd;
+  int lastsig, t_errno;
+  int mb_cur_max;
+  unsigned int tmsec, tmusec;
+  long ival, uval;
+  intmax_t intval;
+  char c;
+  char *input_string, *orig_input_string, *ifs_chars, *prompt, *arrayname;
+  char *e, *t, *t1, *ps2, *tofree;
+  struct stat tsb;
+  SHELL_VAR *var;
+  TTYSTRUCT ttattrs, ttset;
+#if defined (ARRAY_VARS)
+  WORD_LIST *alist;
+  int vflags;
+#endif
+#if defined (READLINE)
+  char *rlbuf, *itext;
+  int rlind;
+  FILE *save_instream;
+#endif
+
+  USE_VAR(size);
+  USE_VAR(i);
+  USE_VAR(pass_next);
+  USE_VAR(print_ps2);
+  USE_VAR(saw_escape);
+  USE_VAR(input_is_pipe);
+/*  USE_VAR(raw); */
+  USE_VAR(edit);
+  USE_VAR(tmsec);
+  USE_VAR(tmusec);
+  USE_VAR(nchars);
+  USE_VAR(silent);
+  USE_VAR(ifs_chars);
+  USE_VAR(prompt);
+  USE_VAR(arrayname);
+#if defined (READLINE)
+  USE_VAR(rlbuf);
+  USE_VAR(rlind);
+  USE_VAR(itext);
+#endif
+  USE_VAR(list);
+  USE_VAR(ps2);
+  USE_VAR(lastsig);
+
+  sigalrm_seen = reading = tty_modified = 0;
+
+  i = 0;		/* Index into the string that we are reading. */
+  raw = edit = 0;	/* Not reading raw input by default. */
+  silent = 0;
+  arrayname = prompt = (char *)NULL;
+  fd = 0;		/* file descriptor to read from */
+
+#if defined (READLINE)
+  rlbuf = itext = (char *)0;
+  rlind = 0;
+#endif
+
+  mb_cur_max = MB_CUR_MAX;
+  tmsec = tmusec = 0;		/* no timeout */
+  nr = nchars = input_is_tty = input_is_pipe = unbuffered_read = have_timeout = 0;
+  delim = '\n';		/* read until newline */
+  ignore_delim = nflag = 0;
+
+  reset_internal_getopt ();
+  while ((opt = internal_getopt (list, "ersa:d:i:n:p:t:u:N:")) != -1)
+    {
+      switch (opt)
+	{
+	case 'r':
+	  raw = 1;
+	  break;
+	case 'p':
+	  prompt = list_optarg;
+	  break;
+	case 's':
+	  silent = 1;
+	  break;
+	case 'e':
+#if defined (READLINE)
+	  edit = 1;
+#endif
+	  break;
+	case 'i':
+#if defined (READLINE)
+	  itext = list_optarg;
+#endif
+	  break;
+#if defined (ARRAY_VARS)
+	case 'a':
+	  arrayname = list_optarg;
+	  break;
+#endif
+	case 't':
+	  code = uconvert (list_optarg, &ival, &uval, (char **)NULL);
+	  if (code == 0 || ival < 0 || uval < 0)
+	    {
+	      builtin_error (_("%s: invalid timeout specification"), list_optarg);
+	      return (EXECUTION_FAILURE);
+	    }
+	  else
+	    {
+	      have_timeout = 1;
+	      tmsec = ival;
+	      tmusec = uval;
+	    }
+	  break;
+	case 'N':
+	  ignore_delim = 1;
+	  delim = -1;
+	case 'n':
+	  nflag = 1;
+	  code = legal_number (list_optarg, &intval);
+	  if (code == 0 || intval < 0 || intval != (int)intval)
+	    {
+	      sh_invalidnum (list_optarg);
+	      return (EXECUTION_FAILURE);
+	    }
+	  else
+	    nchars = intval;
+	  break;
+	case 'u':
+	  code = legal_number (list_optarg, &intval);
+	  if (code == 0 || intval < 0 || intval != (int)intval)
+	    {
+	      builtin_error (_("%s: invalid file descriptor specification"), list_optarg);
+	      return (EXECUTION_FAILURE);
+	    }
+	  else
+	    fd = intval;
+	  if (sh_validfd (fd) == 0)
+	    {
+	      builtin_error (_("%d: invalid file descriptor: %s"), fd, strerror (errno));
+	      return (EXECUTION_FAILURE);
+	    }
+	  break;
+	case 'd':
+	  delim = *list_optarg;
+	  break;
+	CASE_HELPOPT;
+	default:
+	  builtin_usage ();
+	  return (EX_USAGE);
+	}
+    }
+  list = loptend;
+
+  /* `read -t 0 var' tests whether input is available with select/FIONREAD,
+     and fails if those are unavailable */
+  if (have_timeout && tmsec == 0 && tmusec == 0)
+#if 0
+    return (EXECUTION_FAILURE);
+#else
+    return (input_avail (fd) ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
+#endif
+
+  /* Convenience: check early whether or not the first of possibly several
+     variable names is a valid identifier, and bail early if so. */
+#if defined (ARRAY_VARS)
+  vflags = assoc_expand_once ? (VA_NOEXPAND|VA_ONEWORD) : 0;
+  if (list && legal_identifier (list->word->word) == 0 && valid_array_reference (list->word->word, vflags) == 0)
+#else
+  if (list && legal_identifier (list->word->word) == 0)
+#endif
+    {
+      sh_invalidid (list->word->word);
+      return (EXECUTION_FAILURE);
+    }
+
+  /* If we're asked to ignore the delimiter, make sure we do. */
+  if (ignore_delim)
+    delim = -1;
+
+  /* IF IFS is unset, we use the default of " \t\n". */
+  ifs_chars = getifs ();
+  if (ifs_chars == 0)		/* XXX - shouldn't happen */
+    ifs_chars = "";
+  /* If we want to read exactly NCHARS chars, don't split on IFS */
+  if (ignore_delim)
+    ifs_chars = "";
+  for (skip_ctlesc = skip_ctlnul = 0, e = ifs_chars; *e; e++)
+    skip_ctlesc |= *e == CTLESC, skip_ctlnul |= *e == CTLNUL;
+
+  input_string = (char *)xmalloc (size = 112);	/* XXX was 128 */
+  input_string[0] = '\0';
+
+  /* More input and options validation */
+  if (nflag == 1 && nchars == 0)
+    {
+      retval = read (fd, &c, 0);
+      retval = (retval >= 0) ? EXECUTION_SUCCESS : EXECUTION_FAILURE;
+      goto assign_vars;		/* bail early if asked to read 0 chars */
+    }
+
+  /* $TMOUT, if set, is the default timeout for read. */
+  if (have_timeout == 0 && (e = get_string_value ("TMOUT")))
+    {
+      code = uconvert (e, &ival, &uval, (char **)NULL);
+      if (code == 0 || ival < 0 || uval < 0)
+	tmsec = tmusec = 0;
+      else
+	{
+	  tmsec = ival;
+	  tmusec = uval;
+	}
+    }
+
+  begin_unwind_frame ("read_builtin");
+
+#if defined (BUFFERED_INPUT)
+  if (interactive == 0 && default_buffered_input >= 0 && fd_is_bash_input (fd))
+    sync_buffered_stream (default_buffered_input);
+#endif
+
+#if 1
+  input_is_tty = isatty (fd);
+#else
+  input_is_tty = 1;
+#endif
+  if (input_is_tty == 0)
+#ifndef __CYGWIN__
+    input_is_pipe = (lseek (fd, 0L, SEEK_CUR) < 0) && (errno == ESPIPE);
+#else
+    input_is_pipe = 1;
+#endif
+
+  /* If the -p, -e or -s flags were given, but input is not coming from the
+     terminal, turn them off. */
+  if ((prompt || edit || silent) && input_is_tty == 0)
+    {
+      prompt = (char *)NULL;
+#if defined (READLINE)
+      itext = (char *)NULL;
+#endif
+      edit = silent = 0;
+    }
+
+#if defined (READLINE)
+  if (edit)
+    add_unwind_protect (xfree, rlbuf);
+#endif
+
+  pass_next = 0;	/* Non-zero signifies last char was backslash. */
+  saw_escape = 0;	/* Non-zero signifies that we saw an escape char */
+
+  if (tmsec > 0 || tmusec > 0)
+    {
+      /* Turn off the timeout if stdin is a regular file (e.g. from
+	 input redirection). */
+      if ((fstat (fd, &tsb) < 0) || S_ISREG (tsb.st_mode))
+	tmsec = tmusec = 0;
+    }
+
+  if (tmsec > 0 || tmusec > 0)
+    {
+      code = setjmp_nosigs (alrmbuf);
+      if (code)
+	{
+	  sigalrm_seen = 0;
+	  /* Tricky.  The top of the unwind-protect stack is the free of
+	     input_string.  We want to run all the rest and use input_string,
+	     so we have to save input_string temporarily, run the unwind-
+	     protects, then restore input_string so we can use it later */
+	  orig_input_string = 0;
+	  input_string[i] = '\0';	/* make sure it's terminated */
+	  if (i == 0)
+	    {
+	      t = (char *)xmalloc (1);
+	      t[0] = 0;
+	    }
+	  else
+	    t = savestring (input_string);
+
+	  run_unwind_frame ("read_builtin");
+	  input_string = t;
+	  retval = 128+SIGALRM;
+	  goto assign_vars;
+	}
+      if (interactive_shell == 0)
+	initialize_terminating_signals ();
+      old_alrm = set_signal_handler (SIGALRM, sigalrm);
+      add_unwind_protect (reset_alarm, (char *)NULL);
+#if defined (READLINE)
+      if (edit)
+	{
+	  add_unwind_protect (reset_attempted_completion_function, (char *)NULL);
+	  add_unwind_protect (bashline_reset_event_hook, (char *)NULL);
+	}
+#endif
+      falarm (tmsec, tmusec);
+    }
+
+  /* If we've been asked to read only NCHARS chars, or we're using some
+     character other than newline to terminate the line, do the right
+     thing to readline or the tty. */
+  if (nchars > 0 || delim != '\n')
+    {
+#if defined (READLINE)
+      if (edit)
+	{
+	  if (nchars > 0)
+	    {
+	      unwind_protect_int (rl_num_chars_to_read);
+	      rl_num_chars_to_read = nchars;
+	    }
+	  if (delim != '\n')
+	    {
+	      set_eol_delim (delim);
+	      add_unwind_protect (reset_eol_delim, (char *)NULL);
+	    }
+	}
+      else
+#endif
+      if (input_is_tty)
+	{
+	  /* ttsave() */
+	  termsave.fd = fd;
+	  ttgetattr (fd, &ttattrs);
+	  termsave.attrs = ttattrs;
+
+	  ttset = ttattrs;	  
+	  i = silent ? ttfd_cbreak (fd, &ttset) : ttfd_onechar (fd, &ttset);
+	  if (i < 0)
+	    sh_ttyerror (1);
+	  tty_modified = 1;
+	  add_unwind_protect ((Function *)ttyrestore, (char *)&termsave);
+	  if (interactive_shell == 0)
+	    initialize_terminating_signals ();
+	}
+    }
+  else if (silent)	/* turn off echo but leave term in canonical mode */
+    {
+      /* ttsave (); */
+      termsave.fd = fd;
+      ttgetattr (fd, &ttattrs);
+      termsave.attrs = ttattrs;
+
+      ttset = ttattrs;
+      i = ttfd_noecho (fd, &ttset);			/* ttnoecho (); */
+      if (i < 0)
+	sh_ttyerror (1);
+
+      tty_modified = 1;
+      add_unwind_protect ((Function *)ttyrestore, (char *)&termsave);
+      if (interactive_shell == 0)
+	initialize_terminating_signals ();
+    }
+
+#if defined (READLINE)
+  save_instream = 0;
+  if (edit && fd != 0)
+    {
+      if (bash_readline_initialized == 0)
+	initialize_readline ();
+
+      unwind_protect_var (rl_instream);
+      save_instream = rl_instream;
+      rl_instream = fdopen (fd, "r");	
+    }
+#endif
+
+  /* This *must* be the top unwind-protect on the stack, so the manipulation
+     of the unwind-protect stack after the realloc() works right. */
+  add_unwind_protect (xfree, input_string);
+
+  CHECK_ALRM;
+  if ((nchars > 0) && (input_is_tty == 0) && ignore_delim)	/* read -N */
+    unbuffered_read = 2;
+  else if ((nchars > 0) || (delim != '\n') || input_is_pipe)
+    unbuffered_read = 1;
+
+  if (prompt && edit == 0)
+    {
+      fprintf (stderr, "%s", prompt);
+      fflush (stderr);
+    }
+
+#if defined (__CYGWIN__) && defined (O_TEXT)
+  setmode (0, O_TEXT);
+#endif
+
+  ps2 = 0;
+  for (print_ps2 = eof = retval = 0;;)
+    {
+      CHECK_ALRM;
+
+#if defined (READLINE)
+      if (edit)
+	{
+	  /* If we have a null delimiter, don't treat NULL as ending the line */
+	  if (rlbuf && rlbuf[rlind] == '\0' && delim != '\0')
+	    {
+	      free (rlbuf);
+	      rlbuf = (char *)0;
+	    }
+	  if (rlbuf == 0)
+	    {
+	      reading = 1;
+	      rlbuf = edit_line (prompt ? prompt : "", itext);
+	      reading = 0;
+	      rlind = 0;
+	    }
+	  if (rlbuf == 0)
+	    {
+	      eof = 1;
+	      break;
+	    }
+	  c = rlbuf[rlind++];
+	}
+      else
+	{
+#endif
+
+      if (print_ps2)
+	{
+	  if (ps2 == 0)
+	    ps2 = get_string_value ("PS2");
+	  fprintf (stderr, "%s", ps2 ? ps2 : "");
+	  fflush (stderr);
+	  print_ps2 = 0;
+	}
+
+      reading = 1;
+      CHECK_ALRM;
+      errno = 0;
+      if (unbuffered_read == 2)
+	retval = posixly_correct ? zreadintr (fd, &c, 1) : zreadn (fd, &c, nchars - nr);
+      else if (unbuffered_read)
+	retval = posixly_correct ? zreadintr (fd, &c, 1) : zread (fd, &c, 1);
+      else
+	retval = posixly_correct ? zreadcintr (fd, &c) : zreadc (fd, &c);
+      reading = 0;
+
+      if (retval <= 0)
+	{
+	  int t;
+
+	  t = errno;
+	  if (retval < 0 && errno == EINTR)
+	    {
+	      check_signals ();		/* in case we didn't call zread via zreadc */
+	      lastsig = LASTSIG();
+	      if (lastsig == 0)
+		lastsig = trapped_signal_received;
+#if 0
+	      run_pending_traps ();	/* because interrupt_immediately is not set */
+#endif
+	    }
+	  else
+	    lastsig = 0;
+	  if (terminating_signal && tty_modified)
+	    ttyrestore (&termsave);	/* fix terminal before exiting */
+	  CHECK_TERMSIG;
+	  eof = 1;
+	  errno = t;	/* preserve it for the error message below */
+	  break;
+	}
+
+      QUIT;		/* in case we didn't call check_signals() */
+#if defined (READLINE)
+	}
+#endif
+
+      if (retval <= 0)			/* XXX shouldn't happen */
+	CHECK_ALRM;
+
+      /* XXX -- use i + mb_cur_max (at least 4) for multibyte/read_mbchar */
+      if (i + (mb_cur_max > 4 ? mb_cur_max : 4) >= size)
+	{
+	  char *t;
+	  t = (char *)xrealloc (input_string, size += 128);
+
+	  /* Only need to change unwind-protect if input_string changes */
+	  if (t != input_string)
+	    {
+	      input_string = t;
+	      remove_unwind_protect ();
+	      add_unwind_protect (xfree, input_string);
+	    }
+	}
+
+      /* If the next character is to be accepted verbatim, a backslash
+	 newline pair still disappears from the input. */
+      if (pass_next)
+	{
+	  pass_next = 0;
+	  if (c == '\n')
+	    {
+	      if (skip_ctlesc == 0 && i > 0)
+		i--;		/* back up over the CTLESC */
+	      if (interactive && input_is_tty && raw == 0)
+		print_ps2 = 1;
+	    }
+	  else
+	    goto add_char;
+	  continue;
+	}
+
+      /* This may cause problems if IFS contains CTLESC */
+      if (c == '\\' && raw == 0)
+	{
+	  pass_next++;
+	  if (skip_ctlesc == 0)
+	    {
+	      saw_escape++;
+	      input_string[i++] = CTLESC;
+	    }
+	  continue;
+	}
+
+      if (ignore_delim == 0 && (unsigned char)c == delim)
+	break;
+
+      if (c == '\0' && delim != '\0')
+	continue;		/* skip NUL bytes in input */
+
+      if ((skip_ctlesc == 0 && c == CTLESC) || (skip_ctlnul == 0 && c == CTLNUL))
+	{
+	  saw_escape++;
+	  input_string[i++] = CTLESC;
+	}
+
+add_char:
+      input_string[i++] = c;
+      CHECK_ALRM;
+
+#if defined (HANDLE_MULTIBYTE)
+      /* XXX - what if C == 127? Can DEL introduce a multibyte sequence? */
+      if (mb_cur_max > 1 && is_basic (c) == 0)
+	{
+	  input_string[i] = '\0';	/* for simplicity and debugging */
+	  /* If we got input from readline, grab the next multibyte char from
+	     rlbuf. */
+#  if defined (READLINE)
+	  if (edit)
+	    {
+	      size_t clen;
+	      clen = mbrlen (rlbuf + rlind - 1, mb_cur_max, (mbstate_t *)NULL);
+	      /* We only deal with valid multibyte sequences longer than one
+		 byte. If we get anything else, we leave the one character
+		 copied and move on to the next. */
+	      if ((int)clen > 1)
+		{
+		  memcpy (input_string+i, rlbuf+rlind, clen-1);
+		  i += clen - 1;
+		  rlind += clen - 1;
+		}
+	    }
+	  else
+#  endif
+	  if (locale_utf8locale == 0 || ((c & 0x80) != 0))
+	    i += read_mbchar (fd, input_string, i, c, unbuffered_read);
+	}
+#endif
+
+      nr++;
+
+      if (nchars > 0 && nr >= nchars)
+	break;
+    }
+  input_string[i] = '\0';
+  CHECK_ALRM;
+
+#if defined (READLINE)
+  if (edit)
+    free (rlbuf);
+#endif
+
+  if (retval < 0)
+    {
+      t_errno = errno;
+      if (errno != EINTR)
+	builtin_error (_("read error: %d: %s"), fd, strerror (errno));
+      run_unwind_frame ("read_builtin");
+      return ((t_errno != EINTR) ? EXECUTION_FAILURE : 128+lastsig);
+    }
+
+  if (tmsec > 0 || tmusec > 0)
+    reset_alarm ();
+
+  if (nchars > 0 || delim != '\n')
+    {
+#if defined (READLINE)
+      if (edit)
+	{
+	  if (nchars > 0)
+	    rl_num_chars_to_read = 0;
+	  if (delim != '\n')
+	    reset_eol_delim ((char *)NULL);
+	}
+      else
+#endif
+      if (input_is_tty)
+	ttyrestore (&termsave);
+    }
+  else if (silent)
+    ttyrestore (&termsave);
+
+  if (unbuffered_read == 0)
+    zsyncfd (fd);
+
+#if defined (READLINE)
+  if (save_instream)
+    rl_instream = save_instream;	/* can't portably free it */
+#endif
+
+  discard_unwind_frame ("read_builtin");
+
+  retval = eof ? EXECUTION_FAILURE : EXECUTION_SUCCESS;
+
+assign_vars:
+
+#if defined (ARRAY_VARS)
+  /* If -a was given, take the string read, break it into a list of words,
+     an assign them to `arrayname' in turn. */
+  if (arrayname)
+    {
+      if (legal_identifier (arrayname) == 0)
+	{
+	  sh_invalidid (arrayname);
+	  free (input_string);
+	  return (EXECUTION_FAILURE);
+	}
+
+      var = find_or_make_array_variable (arrayname, 1);
+      if (var == 0)
+	{
+	  free (input_string);
+	  return EXECUTION_FAILURE;	/* readonly or noassign */
+	}
+      if (assoc_p (var))
+	{
+          builtin_error (_("%s: cannot convert associative to indexed array"), arrayname);
+	  free (input_string);
+	  return EXECUTION_FAILURE;	/* existing associative array */
+	}
+      else if (invisible_p (var))
+	VUNSETATTR (var, att_invisible);
+      array_flush (array_cell (var));
+
+      alist = list_string (input_string, ifs_chars, 0);
+      if (alist)
+	{
+	  if (saw_escape)
+	    dequote_list (alist);
+	  else
+	    word_list_remove_quoted_nulls (alist);
+	  assign_array_var_from_word_list (var, alist, 0);
+	  dispose_words (alist);
+	}
+      free (input_string);
+      return (retval);
+    }
+#endif /* ARRAY_VARS */ 
+
+  /* If there are no variables, save the text of the line read to the
+     variable $REPLY.  ksh93 strips leading and trailing IFS whitespace,
+     so that `read x ; echo "$x"' and `read ; echo "$REPLY"' behave the
+     same way, but I believe that the difference in behaviors is useful
+     enough to not do it.  Without the bash behavior, there is no way
+     to read a line completely without interpretation or modification
+     unless you mess with $IFS (e.g., setting it to the empty string).
+     If you disagree, change the occurrences of `#if 0' to `#if 1' below. */
+  if (list == 0)
+    {
+#if 0
+      orig_input_string = input_string;
+      for (t = input_string; ifs_chars && *ifs_chars && spctabnl(*t) && isifs(*t); t++)
+	;
+      input_string = t;
+      input_string = strip_trailing_ifs_whitespace (input_string, ifs_chars, saw_escape);
+#endif
+
+      if (saw_escape)
+	{
+	  t = dequote_string (input_string);
+	  var = bind_variable ("REPLY", t, 0);
+	  free (t);
+	}
+      else
+	var = bind_variable ("REPLY", input_string, 0);
+      if (var == 0 || readonly_p (var) || noassign_p (var))
+	retval = EXECUTION_FAILURE;
+      else
+	VUNSETATTR (var, att_invisible);
+
+      free (input_string);
+      return (retval);
+    }
+
+  /* This code implements the Posix.2 spec for splitting the words
+     read and assigning them to variables. */
+  orig_input_string = input_string;
+
+  /* Remove IFS white space at the beginning of the input string.  If
+     $IFS is null, no field splitting is performed. */
+  for (t = input_string; ifs_chars && *ifs_chars && spctabnl(*t) && isifs(*t); t++)
+    ;
+  input_string = t;
+  for (; list->next; list = list->next)
+    {
+      varname = list->word->word;
+#if defined (ARRAY_VARS)
+      if (legal_identifier (varname) == 0 && valid_array_reference (varname, vflags) == 0)
+#else
+      if (legal_identifier (varname) == 0)
+#endif
+	{
+	  sh_invalidid (varname);
+	  free (orig_input_string);
+	  return (EXECUTION_FAILURE);
+	}
+
+      /* If there are more variables than words read from the input,
+	 the remaining variables are set to the empty string. */
+      if (*input_string)
+	{
+	  /* This call updates INPUT_STRING. */
+	  t = get_word_from_string (&input_string, ifs_chars, &e);
+	  if (t)
+	    *e = '\0';
+	  /* Don't bother to remove the CTLESC unless we added one
+	     somewhere while reading the string. */
+	  if (t && saw_escape)
+	    {
+	      t1 = dequote_string (t);
+	      var = bind_read_variable (varname, t1);
+	      free (t1);
+	    }
+	  else
+	    var = bind_read_variable (varname, t ? t : "");
+	}
+      else
+	{
+	  t = (char *)0;
+	  var = bind_read_variable (varname, "");
+	}
+
+      FREE (t);
+      if (var == 0)
+	{
+	  free (orig_input_string);
+	  return (EXECUTION_FAILURE);
+	}
+
+      stupidly_hack_special_variables (varname);
+      VUNSETATTR (var, att_invisible);
+    }
+
+  /* Now assign the rest of the line to the last variable argument. */
+#if defined (ARRAY_VARS)
+  if (legal_identifier (list->word->word) == 0 && valid_array_reference (list->word->word, vflags) == 0)
+#else
+  if (legal_identifier (list->word->word) == 0)
+#endif
+    {
+      sh_invalidid (list->word->word);
+      free (orig_input_string);
+      return (EXECUTION_FAILURE);
+    }
+
+#if 0
+  /* This has to be done this way rather than using string_list
+     and list_string because Posix.2 says that the last variable gets the
+     remaining words and their intervening separators. */
+  input_string = strip_trailing_ifs_whitespace (input_string, ifs_chars, saw_escape);
+#else
+  /* Check whether or not the number of fields is exactly the same as the
+     number of variables. */
+  tofree = NULL;
+  if (*input_string)
+    {
+      t1 = input_string;
+      t = get_word_from_string (&input_string, ifs_chars, &e);
+      if (*input_string == 0)
+	tofree = input_string = t;
+      else
+	{
+	  input_string = strip_trailing_ifs_whitespace (t1, ifs_chars, saw_escape);
+	  tofree = t;
+	}
+    }
+#endif
+
+  if (saw_escape && input_string && *input_string)
+    {
+      t = dequote_string (input_string);
+      var = bind_read_variable (list->word->word, t);
+      free (t);
+    }
+  else
+    var = bind_read_variable (list->word->word, input_string ? input_string : "");
+
+  if (var)
+    {
+      stupidly_hack_special_variables (list->word->word);
+      VUNSETATTR (var, att_invisible);
+    }
+  else
+    retval = EXECUTION_FAILURE;
+
+  FREE (tofree);
+  free (orig_input_string);
+
+  return (retval);
+}
+
+static SHELL_VAR *
+bind_read_variable (name, value)
+     char *name, *value;
+{
+  SHELL_VAR *v;
+
+  v = builtin_bind_variable (name, value, 0);
+  return (v == 0 ? v
+		 : ((readonly_p (v) || noassign_p (v)) ? (SHELL_VAR *)NULL : v));
+}
+
+#if defined (HANDLE_MULTIBYTE)
+static int
+read_mbchar (fd, string, ind, ch, unbuffered)
+     int fd;
+     char *string;
+     int ind, ch, unbuffered;
+{
+  char mbchar[MB_LEN_MAX + 1];
+  int i, n, r;
+  char c;
+  size_t ret;
+  mbstate_t ps, ps_back;
+  wchar_t wc;
+
+  memset (&ps, '\0', sizeof (mbstate_t));
+  memset (&ps_back, '\0', sizeof (mbstate_t));
+  
+  mbchar[0] = ch;
+  i = 1;
+  for (n = 0; n <= MB_LEN_MAX; n++)
+    {
+      ps_back = ps;
+      ret = mbrtowc (&wc, mbchar, i, &ps);
+      if (ret == (size_t)-2)
+	{
+	  ps = ps_back;
+
+	  /* We don't want to be interrupted during a multibyte char read */
+	  if (unbuffered == 2)
+	    r = zreadn (fd, &c, 1);
+	  else if (unbuffered)
+	    r = zread (fd, &c, 1);
+	  else
+	    r = zreadc (fd, &c);
+	  if (r <= 0)
+	    goto mbchar_return;
+	  mbchar[i++] = c;	
+	  continue;
+	}
+      else if (ret == (size_t)-1 || ret == (size_t)0 || ret > (size_t)0)
+	break;
+    }
+
+mbchar_return:
+  if (i > 1)	/* read a multibyte char */
+    /* mbchar[0] is already string[ind-1] */
+    for (r = 1; r < i; r++)
+      string[ind+r-1] = mbchar[r];
+  return i - 1;
+}
+#endif
+
+
+static void
+ttyrestore (ttp)
+     struct ttsave *ttp;
+{
+  ttsetattr (ttp->fd, &(ttp->attrs));
+  tty_modified = 0;
 }
 
 void
 read_tty_cleanup ()
 {
-  ;
+  if (tty_modified)
+    ttyrestore (&termsave);
 }
 
 int
 read_tty_modified ()
 {
-  return 0;
+  return (tty_modified);
+}
+
+#if defined (READLINE)
+static rl_completion_func_t *old_attempted_completion_function = 0;
+static rl_hook_func_t *old_startup_hook;
+static char *deftext;
+
+static void
+reset_attempted_completion_function (cp)
+     char *cp;
+{
+  if (rl_attempted_completion_function == 0 && old_attempted_completion_function)
+    rl_attempted_completion_function = old_attempted_completion_function;
+}
+
+static int
+set_itext ()
+{
+  int r1, r2;
+
+  r1 = r2 = 0;
+  if (old_startup_hook)
+    r1 = (*old_startup_hook) ();
+  if (deftext)
+    {
+      r2 = rl_insert_text (deftext);
+      deftext = (char *)NULL;
+      rl_startup_hook = old_startup_hook;
+      old_startup_hook = (rl_hook_func_t *)NULL;
+    }
+  return (r1 || r2);
+}
+
+static char *
+edit_line (p, itext)
+     char *p;
+     char *itext;
+{
+  char *ret;
+  int len;
+
+  if (bash_readline_initialized == 0)
+    initialize_readline ();
+
+  old_attempted_completion_function = rl_attempted_completion_function;
+  rl_attempted_completion_function = (rl_completion_func_t *)NULL;
+  bashline_set_event_hook ();
+  if (itext)
+    {
+      old_startup_hook = rl_startup_hook;
+      rl_startup_hook = set_itext;
+      deftext = itext;
+    }
+
+  ret = readline (p);
+
+  rl_attempted_completion_function = old_attempted_completion_function;
+  old_attempted_completion_function = (rl_completion_func_t *)NULL;
+  bashline_reset_event_hook ();
+
+  if (ret == 0)
+    return ret;
+  len = strlen (ret);
+  ret = (char *)xrealloc (ret, len + 2);
+  ret[len++] = delim;
+  ret[len] = '\0';
+  return ret;
+}
+
+static int old_delim_ctype;
+static rl_command_func_t *old_delim_func;
+static int old_newline_ctype;
+static rl_command_func_t *old_newline_func;
+
+static unsigned char delim_char;
+
+static void
+set_eol_delim (c)
+     int c;
+{
+  Keymap cmap;
+
+  if (bash_readline_initialized == 0)
+    initialize_readline ();
+  cmap = rl_get_keymap ();
+
+  /* Save the old delimiter char binding */
+  old_newline_ctype = cmap[RETURN].type;
+  old_newline_func =  cmap[RETURN].function;
+  old_delim_ctype = cmap[c].type;
+  old_delim_func = cmap[c].function;
+
+  /* Change newline to self-insert */
+  cmap[RETURN].type = ISFUNC;
+  cmap[RETURN].function = rl_insert;
+
+  /* Bind the delimiter character to accept-line. */
+  cmap[c].type = ISFUNC;
+  cmap[c].function = rl_newline;
+
+  delim_char = c;
 }
 
+static void
+reset_eol_delim (cp)
+     char *cp;
+{
+  Keymap cmap;
+
+  cmap = rl_get_keymap ();
+
+  cmap[RETURN].type = old_newline_ctype;
+  cmap[RETURN].function = old_newline_func;
+
+  cmap[delim_char].type = old_delim_ctype;
+  cmap[delim_char].function = old_delim_func;
+}
+#endif
diff --git a/bash-5.1/builtins_rust/build.rs b/bash-5.1/builtins_rust/build.rs
index 5b5544932086123d93bad082cc9783b5d85fd090..09800cee2b6f3de8663d693225c22b35fc58dca3 100644
--- a/bash-5.1/builtins_rust/build.rs
+++ b/bash-5.1/builtins_rust/build.rs
@@ -1,183 +1,6 @@
-
-
     use std::{env};
     
     fn main() {
-        
         let library_dir = "/opt/rsbash/builtins";
-        
         println!("cargo:rustc-link-search=native={}", env::join_paths(&[library_dir]).unwrap().to_str().unwrap());
-     
-        println!("cargo:rustc-flags=-l dylib=jobs");
-        println!("cargo:rustc-flags=-l dylib=trap");
-        println!("cargo:rustc-flags=-l dylib=execute_cmd");
-        println!("cargo:rustc-flags=-l dylib=unwind_prot");
-        println!("cargo:rustc-flags=-l dylib=flags");
-        println!("cargo:rustc-flags=-l dylib=variables");
-        println!("cargo:rustc-flags=-l dylib=builtins_break");
-        println!("cargo:rustc-flags=-l dylib=builtins_common");
-        println!("cargo:rustc-flags=-l dylib=sig");
-        println!("cargo:rustc-flags=-l dylib=builtins_wait");
-        println!("cargo:rustc-flags=-l dylib=shell");
-        println!("cargo:rustc-flags=-l dylib=input");
-        println!("cargo:rustc-flags=-l dylib=xmalloc");
-        println!("cargo:rustc-flags=-l dylib=version");
-        println!("cargo:rustc-flags=-l dylib=error");
-        println!("cargo:rustc-flags=-l dylib=subst");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_winsize");
-        println!("cargo:rustc-flags=-l dylib=dispose_cmd");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_readline");
-        println!("cargo:rustc-flags=-l dylib=general");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_oslib");
-        println!("cargo:rustc-flags=-l dylib=list");
-        println!("cargo:rustc-flags=-l dylib=builtins_evalstring");
-        println!("cargo:rustc-flags=-l dylib=y.tab");
-        println!("cargo:rustc-flags=-l dylib=builtins_evalfile");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_casemod");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_fmtulong");
-        println!("cargo:rustc-flags=-l dylib=builtins_set");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_history");
-        println!("cargo:rustc-flags=-l dylib=mailcheck");
-        println!("cargo:rustc-flags=-l dylib=bashhist");
-        println!("cargo:rustc-flags=-l dylib=bashline");
-        println!("cargo:rustc-flags=-l dylib=assoc");
-        println!("cargo:rustc-flags=-l dylib=builtins_shopt");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_histfile");
-        println!("cargo:rustc-flags=-l dylib=hashlib");
-        println!("cargo:rustc-flags=-l dylib=print_cmd");
-        println!("cargo:rustc-flags=-l dylib=copy_cmd");
-        println!("cargo:rustc-flags=-l dylib=hashcmd");
-        println!("cargo:rustc-flags=-l dylib=pathexp");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_random");
-        println!("cargo:rustc-flags=-l dylib=findcmd");
-        println!("cargo:rustc-flags=-l dylib=arrayfunc");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_terminal");
-        println!("cargo:rustc-flags=-l dylib=array");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_complete");
-        println!("cargo:rustc-flags=-l dylib=alias");
-        println!("cargo:rustc-flags=-l dylib=builtins_getopt");
-        println!("cargo:rustc-flags=-l dylib=locale");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_shell");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_stringvec");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_itos");
-        println!("cargo:rustc-flags=-l dylib=pcomplete");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_strtrans");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_histexpand");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_shquote");
-        println!("cargo:rustc-flags=-l dylib=builtins_pushd");
-        println!("cargo:rustc-flags=-l dylib=redir");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_pathcanon");
-        println!("cargo:rustc-flags=-l dylib=builtins_getopts");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_colors");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_mbutil");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_signals");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_text");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_parse-colors");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_display");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_util");
-        println!("cargo:rustc-flags=-l dylib=lib_glob_xmbsrtowcs");
-        println!("cargo:rustc-flags=-l dylib=lib_glob_gmisc");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_shmbchar");
-        println!("cargo:rustc-flags=-l dylib=make_cmd");
-        println!("cargo:rustc-flags=-l dylib=syntax");
-        println!("cargo:rustc-flags=-l dylib=lib_glob_strmatch");
-        println!("cargo:rustc-flags=-l dylib=lib_glob_glob");
-        println!("cargo:rustc-flags=-l dylib=builtins_declare");
-        println!("cargo:rustc-flags=-l dylib=stringlib");
-        println!("cargo:rustc-flags=-l dylib=builtins_setattr");
-        println!("cargo:rustc-flags=-l dylib=braces");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_misc");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_rltty");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_keymaps");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_kill");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_input");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_vi_mode");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_macro");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_bind");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_undo");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_funmap");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_nls");
-        println!("cargo:rustc-flags=-l dylib=builtins_read");
-        println!("cargo:rustc-flags=-l dylib=eval");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_setlinebuf");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_netconn");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_input_avail");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_shtty");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_zread");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_ufuncs");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_uconvert");
-        println!("cargo:rustc-flags=-l dylib=pcomplib");
-        println!("cargo:rustc-flags=-l dylib=bracecomp");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_spell");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_fnxform");
-        println!("cargo:rustc-flags=-l dylib=lib_termcap_termcap");
-        println!("cargo:rustc-flags=-l dylib=lib_termcap_tparam");
-        println!("cargo:rustc-flags=-l dylib=builtins_bashgetopt");
-        println!("cargo:rustc-flags=-l dylib=builtins_source");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_shmatch");
-        println!("cargo:rustc-flags=-l dylib=test");
-        println!("cargo:rustc-flags=-l dylib=builtins_return");
-        println!("cargo:rustc-flags=-l dylib=builtins_exec");
-        println!("cargo:rustc-flags=-l dylib=builtins_command");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_mbschr");
-        println!("cargo:rustc-flags=-l dylib=expr");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_timeval");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_fpurge");
-        println!("cargo:rustc-flags=-l dylib=builtins_fc");
-        println!("cargo:rustc-flags=-l dylib=builtins_mapfile");
-        println!("cargo:rustc-flags=-l dylib=builtins_eval");
-        println!("cargo:rustc-flags=-l dylib=builtins_jobs");
-        println!("cargo:rustc-flags=-l dylib=builtins_cd");
-        println!("cargo:rustc-flags=-l dylib=builtins_shopt");
-        println!("cargo:rustc-flags=-l dylib=builtins_echo");
-        println!("cargo:rustc-flags=-l dylib=lib_glob_smatch");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_utf8");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_search");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_isearch");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_stringlist");
-        println!("cargo:rustc-flags=-l dylib=builtins_complete");
-        println!("cargo:rustc-flags=-l dylib=builtins_exit");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_tmpfile");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_netopen");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_eaccess");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_histsearch");
-        println!("cargo:rustc-flags=-l dylib=lib_tilde_tilde");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_makepath");
-        println!("cargo:rustc-flags=-l dylib=builtins_shift");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_parens");
-        println!("cargo:rustc-flags=-l dylib=builtins_type");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_zmapfd");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_mailstat");
-        println!("cargo:rustc-flags=-l dylib=builtins_builtins");
-        println!("cargo:rustc-flags=-l dylib=builtins_kill");
-        println!("cargo:rustc-flags=-l dylib=builtins_times");
-        println!("cargo:rustc-flags=-l dylib=builtins_printf");
-        println!("cargo:rustc-flags=-l dylib=builtins_umask");
-        println!("cargo:rustc-flags=-l dylib=builtins_let");
-        println!("cargo:rustc-flags=-l dylib=builtins_suspend");
-        println!("cargo:rustc-flags=-l dylib=builtins_history");
-        println!("cargo:rustc-flags=-l dylib=builtins_bind");
-        println!("cargo:rustc-flags=-l dylib=builtins_fg_bg");
-        println!("cargo:rustc-flags=-l dylib=builtins_builtin");
-        println!("cargo:rustc-flags=-l dylib=builtins_alias");
-        println!("cargo:rustc-flags=-l dylib=builtins_hash");
-        println!("cargo:rustc-flags=-l dylib=builtins_enable");
-        println!("cargo:rustc-flags=-l dylib=builtins_help");
-        println!("cargo:rustc-flags=-l dylib=builtins_trap");
-        println!("cargo:rustc-flags=-l dylib=builtins_caller");
-        println!("cargo:rustc-flags=-l dylib=builtins_colon");
-        println!("cargo:rustc-flags=-l dylib=builtins_ulimit");
-        println!("cargo:rustc-flags=-l dylib=builtins_test");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_wcsnwidth");
-        println!("cargo:rustc-flags=-l dylib=lib_readline_callback");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_zcatfd");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_zwrite");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_unicode");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_zgetline");
-        println!("cargo:rustc-flags=-l dylib=lib_malloc_malloc");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_pathphys");
-        println!("cargo:rustc-flags=-l dylib=lib_sh_fmtumax");
-        
-
-     
     }
diff --git a/bash-5.1/builtins_rust/shift/Cargo.toml b/bash-5.1/builtins_rust/shift/Cargo.toml
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..e53a57fd98105fbd888d30812ec61caefadaadc3 100644
--- a/bash-5.1/builtins_rust/shift/Cargo.toml
+++ b/bash-5.1/builtins_rust/shift/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "shift"
+version = "0.1.0"
+edition = "2021"
+authors = ["lvgenggeng"]
+build = "../build.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "rshift"
+crate-type = ["cdylib"]
+
+[dependencies]
+libc = "0.2"
+nix = "0.23"
diff --git a/bash-5.1/builtins_rust/shift/src/intercdep.rs b/bash-5.1/builtins_rust/shift/src/intercdep.rs
new file mode 100644
index 0000000000000000000000000000000000000000..24ce4a1bc3165a754e27ea6796fb3c135f38641a
--- /dev/null
+++ b/bash-5.1/builtins_rust/shift/src/intercdep.rs
@@ -0,0 +1,36 @@
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_desc {
+    pub word: *mut c_char,
+    pub flags: c_int,
+}
+pub type WORD_DESC = word_desc;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_list {
+    pub next: *mut word_list,
+    pub word: *mut WORD_DESC,
+}
+pub type WORD_LIST = word_list;
+
+pub const EXECUTION_SUCCESS : c_int = 0;
+pub const EXECUTION_FAILURE : c_int = 1;
+pub const EX_USAGE: c_int = 258;
+
+extern "C" {
+    pub fn builtin_usage();
+    pub fn builtin_help();
+    pub fn builtin_error(format: *const c_char, ...);
+
+    pub fn get_numeric_arg(list: *mut WORD_LIST, fatal: c_int, count: c_long) -> c_int;
+    pub fn number_of_args() -> c_int;
+    pub fn sh_erange(s: *mut c_char, desc: *mut c_char);
+    pub fn clear_dollar_vars();
+    pub fn shift_args(times: c_int);
+    pub fn invalidate_cached_quoted_dollar_at();
+
+    pub static mut list_optarg : *mut libc::c_char;
+    pub static mut loptend : *mut WORD_LIST;
+}
diff --git a/bash-5.1/builtins_rust/shift/src/lib.rs b/bash-5.1/builtins_rust/shift/src/lib.rs
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..00fb8f8749d606b5da65d76ac0365cef366abbf3 100644
--- a/bash-5.1/builtins_rust/shift/src/lib.rs
+++ b/bash-5.1/builtins_rust/shift/src/lib.rs
@@ -0,0 +1,47 @@
+use libc::{c_int, c_char, c_long, PT_NULL};
+
+include!(concat!("intercdep.rs"));
+
+pub static print_shift_error: c_int = 0;
+
+#[no_mangle]
+pub extern "C" fn r_shift_builtin(list: *mut WORD_LIST) -> i32 {
+    println!("r_shift_builtin call");
+
+unsafe {
+    if !list.is_null() && !(*list).word.is_null() &&
+        libc::strcmp((*((*list).word)).word, "--help\0".as_ptr() as *const c_char) == 0 {
+        builtin_help ();
+        return EX_USAGE;
+    }
+
+    let mut times: c_int = 0;
+    if get_numeric_arg(list, 0, std::mem::transmute(&times)) == 0 {
+        return EXECUTION_FAILURE;
+    }
+
+    if times == 0 {
+        return EXECUTION_SUCCESS;
+    } else if times < 0 {
+        let s = if list.is_null() {PT_NULL as *mut c_char} else {(*(*list).word).word};
+        sh_erange(s,"shift count\0".as_ptr() as *mut c_char);
+        return EXECUTION_FAILURE;
+    }
+
+    let nargs = number_of_args();
+    if times > nargs {
+        if print_shift_error != 0 {
+            let s = if list.is_null() {PT_NULL as *mut c_char} else {(*(*list).word).word};
+            sh_erange(s,"shift count\0".as_ptr() as *mut c_char);
+            return EXECUTION_FAILURE;
+        }
+    } else if times == nargs {
+        clear_dollar_vars();
+    } else {
+        shift_args(times);
+    }
+
+    invalidate_cached_quoted_dollar_at();
+}
+    return EXECUTION_SUCCESS;
+}
diff --git a/bash-5.1/builtins_rust/suspend/Cargo.toml b/bash-5.1/builtins_rust/suspend/Cargo.toml
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..c758cc9fac6965392a7da485375f1a4f26fef823 100644
--- a/bash-5.1/builtins_rust/suspend/Cargo.toml
+++ b/bash-5.1/builtins_rust/suspend/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "suspend"
+version = "0.1.0"
+edition = "2021"
+authors = ["lvgenggeng"]
+build = "../build.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "rsuspend"
+crate-type = ["cdylib"]
+
+[dependencies]
+libc = "0.2"
+nix = "0.23"
diff --git a/bash-5.1/builtins_rust/suspend/src/intercdep.rs b/bash-5.1/builtins_rust/suspend/src/intercdep.rs
new file mode 100644
index 0000000000000000000000000000000000000000..5cf962bf97e42c76afda89d62a866ac58f7d3389
--- /dev/null
+++ b/bash-5.1/builtins_rust/suspend/src/intercdep.rs
@@ -0,0 +1,42 @@
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_desc {
+    pub word: *mut c_char,
+    pub flags: c_int,
+}
+pub type WORD_DESC = word_desc;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_list {
+    pub next: *mut word_list,
+    pub word: *mut WORD_DESC,
+}
+pub type WORD_LIST = word_list;
+
+pub const EXECUTION_SUCCESS : c_int = 0;
+pub const EXECUTION_FAILURE : c_int = 1;
+pub const EX_USAGE: c_int = 258;
+
+pub type SigHandler = unsafe extern "C" fn(arg1: c_int);
+
+extern "C" {
+    pub fn reset_internal_getopt();
+    pub fn internal_getopt(list: *mut WORD_LIST, opts: *mut c_char) -> c_int;
+    pub fn builtin_usage();
+    pub fn builtin_help();
+    pub fn builtin_error(format: *const c_char, ...);
+
+    pub fn sh_nojobs(s: *mut c_char);
+    pub fn no_args(list: *mut WORD_LIST);
+    pub fn killpg(pgrp: libc::pid_t, sig: c_int) -> c_int;
+
+    pub fn set_signal_handler(arg1: c_int, arg2: *mut SigHandler) -> *mut SigHandler;
+
+    pub static mut list_optarg : *mut libc::c_char;
+    pub static mut loptend : *mut WORD_LIST;
+    pub static mut job_control: c_int;
+    pub static mut login_shell: c_int;
+    pub static mut shell_pgrp: libc::pid_t;
+}
diff --git a/bash-5.1/builtins_rust/suspend/src/lib.rs b/bash-5.1/builtins_rust/suspend/src/lib.rs
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..b92a6ff3dbb49ca1fdf1b6dcb75a5c2e1563643e 100644
--- a/bash-5.1/builtins_rust/suspend/src/lib.rs
+++ b/bash-5.1/builtins_rust/suspend/src/lib.rs
@@ -0,0 +1,54 @@
+use libc::{c_int, c_char, c_long, PT_NULL};
+
+include!(concat!("intercdep.rs"));
+
+pub static mut old_cont: *mut SigHandler = PT_NULL as *mut SigHandler;
+
+#[no_mangle]
+pub extern "C" fn r_suspend_builtin(mut list: *mut WORD_LIST) -> i32 {
+    println!("r_suspend_builtin call");
+
+    let mut opt: c_int;
+    let mut force: c_int = 0;
+
+unsafe {
+    reset_internal_getopt();
+    let opt_str = "f:\0".as_ptr() as *mut c_char;
+    opt = internal_getopt (list, opt_str);
+    while  opt != -1 {
+        let opt_char:char=char::from(opt as u8);
+        match opt_char {
+            'f' => force += 1,
+            _ => {
+            builtin_usage ();
+            return EX_USAGE;
+            }
+        }
+        opt = internal_getopt (list, opt_str);
+    }
+    list = loptend;
+
+    if job_control == 0 {
+        sh_nojobs("cannot suspend\0".as_ptr() as *mut c_char);
+        return EXECUTION_FAILURE;
+    }
+
+    if force == 0 {
+        no_args(list);
+        if login_shell != 0 {
+            builtin_error("cannot suspend a login shell\0".as_ptr() as *mut c_char);
+            return EXECUTION_FAILURE;
+        }
+    }
+
+    old_cont = set_signal_handler(libc::SIGCONT, std::mem::transmute(suspend_continue as usize));
+
+    killpg(shell_pgrp, libc::SIGSTOP);
+}
+    return EXECUTION_SUCCESS;
+}
+
+unsafe fn suspend_continue(sig: c_int)
+{
+    set_signal_handler(libc::SIGCONT, old_cont);
+}
\ No newline at end of file
diff --git a/bash-5.1/builtins_rust/test/Cargo.toml b/bash-5.1/builtins_rust/test/Cargo.toml
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..2e66e538083ba9008940886d08ee5959b642ad60 100644
--- a/bash-5.1/builtins_rust/test/Cargo.toml
+++ b/bash-5.1/builtins_rust/test/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "test"
+version = "0.1.0"
+edition = "2021"
+authors = ["lvgenggeng"]
+build = "../build.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "rtest"
+crate-type = ["cdylib"]
+
+[dependencies]
+libc = "0.2"
+nix = "0.23"
diff --git a/bash-5.1/builtins_rust/test/src/intercdep.rs b/bash-5.1/builtins_rust/test/src/intercdep.rs
new file mode 100644
index 0000000000000000000000000000000000000000..060c9f4665e026babbf0727a80759352f2221062
--- /dev/null
+++ b/bash-5.1/builtins_rust/test/src/intercdep.rs
@@ -0,0 +1,32 @@
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_desc {
+    pub word: *mut c_char,
+    pub flags: c_int,
+}
+pub type WORD_DESC = word_desc;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_list {
+    pub next: *mut word_list,
+    pub word: *mut WORD_DESC,
+}
+pub type WORD_LIST = word_list;
+
+pub const EXECUTION_SUCCESS : c_int = 0;
+pub const EXECUTION_FAILURE : c_int = 1;
+pub const EX_BADUSAGE : c_int = 2;
+pub const EX_USAGE: c_int = 258;
+
+extern "C" {
+    pub fn builtin_error(format: *const c_char, ...);
+
+    pub fn make_builtin_argv(list: *mut WORD_LIST, ip: *mut c_int) -> *mut *mut c_char;
+    pub fn test_command (margc: c_int, margv: *mut *mut c_char) -> c_int;
+
+    pub static mut list_optarg : *mut libc::c_char;
+    pub static mut loptend : *mut WORD_LIST;
+    pub static mut this_command_name: *mut c_char;
+}
diff --git a/bash-5.1/builtins_rust/test/src/lib.rs b/bash-5.1/builtins_rust/test/src/lib.rs
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..e45d4aada38c63c061bb4cc35dd4af6790785eeb 100644
--- a/bash-5.1/builtins_rust/test/src/lib.rs
+++ b/bash-5.1/builtins_rust/test/src/lib.rs
@@ -0,0 +1,25 @@
+use libc::{c_int, c_char, c_void};
+
+include!(concat!("intercdep.rs"));
+
+#[no_mangle]
+pub extern "C" fn r_test_builtin(list: *mut WORD_LIST) -> i32 {
+    println!("r_test_builtin call");
+
+    let result: c_int;
+    let mut argc: c_int = 0;
+unsafe {
+    if list.is_null() {
+        if *this_command_name == b'[' as c_char &&
+            *((this_command_name as usize + 1) as *mut c_char) == 0 {
+            builtin_error("missing `]'\0".as_ptr() as *mut c_char);
+            return EX_BADUSAGE;
+        }
+        return EXECUTION_FAILURE;
+    }
+    let argv = make_builtin_argv(list, std::mem::transmute(&argc));
+    result = test_command(argc, argv);
+    libc::free(argv as *mut c_void);
+}
+    return result;
+}
diff --git a/bash-5.1/builtins_rust/times/Cargo.toml b/bash-5.1/builtins_rust/times/Cargo.toml
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..4067fac2807d810958a6289bbc86d9afb8669f99 100644
--- a/bash-5.1/builtins_rust/times/Cargo.toml
+++ b/bash-5.1/builtins_rust/times/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "times"
+version = "0.1.0"
+edition = "2021"
+authors = ["lvgenggeng"]
+build = "../build.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "rtimes"
+crate-type = ["cdylib"]
+
+[dependencies]
+libc = "0.2"
+nix = "0.23"
diff --git a/bash-5.1/builtins_rust/times/src/intercdep.rs b/bash-5.1/builtins_rust/times/src/intercdep.rs
new file mode 100644
index 0000000000000000000000000000000000000000..beca33271fcf59095c25ce24a98831c8c8797e55
--- /dev/null
+++ b/bash-5.1/builtins_rust/times/src/intercdep.rs
@@ -0,0 +1,28 @@
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_desc {
+    pub word: *mut c_char,
+    pub flags: c_int,
+}
+pub type WORD_DESC = word_desc;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct word_list {
+    pub next: *mut word_list,
+    pub word: *mut WORD_DESC,
+}
+pub type WORD_LIST = word_list;
+
+pub const EXECUTION_SUCCESS : c_int = 0;
+pub const EXECUTION_FAILURE : c_int = 1;
+pub const EX_USAGE: c_int = 258;
+
+extern "C" {
+    pub fn no_options(list: *mut WORD_LIST) -> c_int;
+    pub fn print_timeval(fp: *mut libc::FILE, tvp: *mut libc::timeval);
+    pub fn sh_chkwrite(s: c_int) -> c_int;
+
+    pub static stdout: *mut libc::FILE;
+}
diff --git a/bash-5.1/builtins_rust/times/src/lib.rs b/bash-5.1/builtins_rust/times/src/lib.rs
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..1632fee52d5ad247c527cb86bbb3b89d54369e7a 100644
--- a/bash-5.1/builtins_rust/times/src/lib.rs
+++ b/bash-5.1/builtins_rust/times/src/lib.rs
@@ -0,0 +1,34 @@
+use libc::{c_int, c_char};
+
+include!(concat!("intercdep.rs"));
+
+#[no_mangle]
+pub extern "C" fn r_times_builtin(list: *mut WORD_LIST) -> i32 {
+    println!("r_times_builtin call");
+
+unsafe {
+
+    if no_options(list) != 0 {
+        return EX_USAGE;
+    }
+
+    let mut curr: libc::rusage = std::mem::zeroed();
+    let mut kids: libc::rusage = std::mem::zeroed();
+    libc::putchar(b'\n' as c_int);
+
+    libc::getrusage(libc::RUSAGE_SELF, std::mem::transmute(&curr));
+    libc::getrusage(libc::RUSAGE_CHILDREN, std::mem::transmute(&kids));
+
+    print_timeval(stdout, std::mem::transmute(&curr.ru_utime));
+    libc::putchar(b' ' as c_int);
+    print_timeval(stdout, std::mem::transmute(&curr.ru_stime));
+    libc::putchar(b'\n' as c_int);
+
+    print_timeval(stdout, std::mem::transmute(&kids.ru_utime));
+    libc::putchar(b' ' as c_int);
+    print_timeval(stdout, std::mem::transmute(&kids.ru_stime));
+    libc::putchar(b'\n' as c_int);
+
+    return sh_chkwrite(EXECUTION_SUCCESS);
+}
+}
diff --git a/bash-5.1/configure b/bash-5.1/configure
index 0d917697efd3adc03a884f7dcce0942c0899228d..c255a481dfb552af4fe039b6f622820af553401c 100755
--- a/bash-5.1/configure
+++ b/bash-5.1/configure
@@ -579,12 +579,13 @@ MFLAGS=
 MAKEFLAGS=
 
 # Identity of this package.
-PACKAGE_NAME='bash'
-PACKAGE_TARNAME='bash'
+PACKAGE_NAME='rush'
+PACKAGE_TARNAME='rush'
 PACKAGE_VERSION='5.1-release'
-PACKAGE_STRING='bash 5.1-release'
+PACKAGE_STRING='rush 5.1-release'
 PACKAGE_BUGREPORT='bug-bash@gnu.org'
 PACKAGE_URL=''
+RUSH_LIB='/opt/rush/lib'
 
 ac_unique_file="shell.h"
 # Factoring default headers for most tests.
@@ -809,6 +810,7 @@ PACKAGE_BUGREPORT
 PACKAGE_STRING
 PACKAGE_VERSION
 PACKAGE_TARNAME
+RUSH_LIB
 PACKAGE_NAME
 PATH_SEPARATOR
 SHELL'
@@ -1693,7 +1695,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-bash configure 5.1-release
+rush configure 5.1-release
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2402,7 +2404,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by bash $as_me 5.1-release, which was
+It was created by rush $as_me 5.1-release, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2609,6 +2611,7 @@ $as_echo "/* confdefs.h */" > confdefs.h
 
 cat >>confdefs.h <<_ACEOF
 #define PACKAGE_NAME "$PACKAGE_NAME"
+#define RUSH_LIB "$RUSH_LIB"
 _ACEOF
 
 cat >>confdefs.h <<_ACEOF
diff --git a/record.txt b/record.txt
index 8f5fbb12968b9411666e811b8c2f24be89e8410c..b1b9747aa1a81f2682b201c24b85b9f32fcbd86b 100644
--- a/record.txt
+++ b/record.txt
@@ -1,4 +1,4 @@
 20
 21
 22
-25
+26