Initial check-in: changes for building Emacs under Mac OS.

2000-10-23  Andrew Choi  <akochoi@i-cable.com>

	* dispextern.h [macintosh]: Include macgui.h instead of macterm.h.

	* dispnew.c [macintosh]: Include macterm.h.
	(init_display) [macintosh]: initialization for window system.

	* emacs.c (main) [macintosh]: Call syms_of_textprop,
	syms_of_macfns, syms_of_ccl, syms_of_fontset, syms_of_xterm,
	syms_of_search, x_term_init, and init_keyboard before calling
	init_window_once.  Also, call syms_of_xmenu.

	* fontset.c (syms_of_fontset) [macintosh]: Set ASCII font of
	default fontset to Monaco.

	* frame.c [macintosh]: Include macterm.h.  Remove declarations of
	NewMacWindow and DisposeMacWindow.
	(make_terminal_frame) [macintosh]: Call make_mac_terminal_frame
	instead of calling NewMacWindow and setting fields of
	f->output_data.mac directly.  Call init_frame_faces.
	(Fdelete_frame) [macintosh]: Remove unused code.
	(Fmodify_frame_parameters) [macintosh]: Call
	x_set_frame_parameters instead of mac_set_frame_parameters.

	* frame.h [macintosh]: Define menu_bar_lines field in struct
	frame.  Define FRAME_EXTERNAL_MENU_BAR macro.

	* keyboard.c [macintosh]: Include macterm.h.
	(kbd_buffer_get_event) [macintosh]: Generate delete_window_event
	and menu_bar_activate_event type events as for X and NT.
	(make_lispy_event) [macintosh]: Construct lisp events of type
	MENU_BAR_EVENT as for X and NT.

	* sysdep.c [macintosh]: Remove declaration for sys_signal.
	Include stdlib.h.  Remove definition of Vx_bitmap_file_path.
	(sys_subshell) [macintosh]: Remove definition entirely.
	(init_sys_modes) [macintosh]: Do not initialize Vwindow_system and
	Vwindow_system_version here.  Remove initialization of
	Vx_bitmap_file_path.
	(read_input_waiting): Correct the number of parameters passed to
	read_socket_hook.
	Move all Macintosh functions to mac/mac.c.

	* term.c [macintosh]: Include macterm.h.

	* window.c [macintosh]: Include macterm.h.

	* xdisp.c [macintosh]: Include macterm.h.  Declare
	set_frame_menubar and pending_menu_activation.
	(echo_area_display) [macintosh]: Do not return if terminal frame
	is the selected frame.
	(update_menu_bar) [macintosh]: Check FRAME_EXTERNAL_MENU_BAR (f).
	Allow only the selected frame to set menu bar.
	(redisplay_window) [macintosh]: Obtain menu bar to redisplay by
	calling FRAME_EXTERNAL_MENU_BAR (f).
	(display_menu_bar) [macintosh]: Check FRAME_MAC_P (f).

	* xfaces.c [macintosh]: Include macterm.h.  Define x_display_info
	and check_x.  Declare XCreateGC.  Define x_create_gc and
	x_free_gc.  Initialize font_sort_order.
	(x_face_list_fonts) [macintosh]: Use the same code as WINDOWSNT,
	but call x_list_fonts instead of w32_list_fonts.
	(Finternal_face_x_get_resource) [macintosh]: Do not call
	display_x_get_resource.
	(prepare_face_for_display) [macintosh]: Set xgcv.font.
	(realize_x_face) [macintosh]: Load the font if it is specified in
	ATTRS.
	(syms_of_xfaces) [macintosh]: Initialize Vscalable_fonts_allowed
	to Qt.

	* cus-edit.el (custom-button-face): Use 3D look for mac.
	(custom-button-pressed-face): Likewise.

	* faces.el (set-face-attributes-from-resources): Handle mac frames
	in the same way as x and w32 frames.
	(face-valid-attribute-values): Likewise.
	(read-face-attribute): Likewise.
	(defined-colors): Likewise.
	(color-defined-p): Likewise.
	(color-values): Likewise.
	(display-grayscale-p): Likewise.
	(face-set-after-frame-default): Likewise.
	(mode-line): Same default face as for x and w32.
	(tool-bar): Likewise.

	* frame.el: Remove call to frame-notice-user-settings at end of
	the file.

	* info.el (Info-fontify-node): make underlines invisible for mac
	as for x, pc, and w32 frame types.

	* term/mac-win.el: New file.

1 files changed, 9 insertions, 1565 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index d53b7d93db2..3b336f6bf7f 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -31,21 +31,15 @@ Boston, MA 02111-1307, USA.  */
 #undef NULL
 
 #ifdef macintosh
-#ifdef __MRC__
-__sigfun sys_signal (int signal, __sigfun signal_func);
-#elif __MWERKS__
-__signal_func_ptr sys_signal (int signal, __signal_func_ptr signal_func);
-#else
-You lose!!!
-#endif
+/* It is essential to include stdlib.h so that this file picks up
+   the correct definitions of rand, srand, and RAND_MAX.
+   Otherwise random numbers will not work correctly.  */
+#include <stdlib.h>
+
 #ifndef subprocesses
 /* Nonzero means delete a process right away if it exits (process.c).  */
 static int delete_exited_processes;
 #endif
-#ifndef HAVE_X_WINDOWS
-/* Search path for bitmap files (xfns.c).  */
-Lisp_Object Vx_bitmap_file_path;
-#endif
 #endif  /* macintosh */
 
 #define min(x,y) ((x) > (y) ? (y) : (x))
@@ -751,12 +745,10 @@ sys_suspend ()
 
 /* Fork a subshell.  */
 
+#ifndef macintosh
 void
 sys_subshell ()
 {
-#ifdef macintosh
-    error ("Can't spawn subshell");
-#else
 #ifndef VMS
 #ifdef DOS_NT	/* Demacs 1.1.2 91/10/20 Manabu Higashida */
   int st;
@@ -873,8 +865,8 @@ sys_subshell ()
   restore_signal_handlers (saved_handlers);
   synch_process_alive = 0;
 #endif /* !VMS */
-#endif /* !macintosh */
 }
+#endif /* !macintosh */
 
 static void
 save_signal_handlers (saved_handlers)
@@ -1285,23 +1277,13 @@ init_sys_modes ()
   struct emacs_tty tty;
 
 #ifdef macintosh
-  Vwindow_system = intern ("mac");
-  Vwindow_system_version = make_number (1);
-
-/* cus-start.el complains if delete-exited-processes and x-bitmap-file-path not defined */
+/* cus-start.el complains if delete-exited-processes is not defined */
 #ifndef subprocesses
   DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes,
     "*Non-nil means delete processes immediately when they exit.\n\
 nil means don't delete them until `list-processes' is run.");
   delete_exited_processes = 0;
 #endif
-
-#ifndef HAVE_X_WINDOWS
-  DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path,
-    "List of directories to search for bitmap files for X.");
-  Vx_bitmap_file_path = decode_env_path ((char *) 0, ".");
-#endif
-
 #endif /* not macintosh */
 
 #ifdef VMS
@@ -2651,7 +2633,7 @@ read_input_waiting ()
 
       read_alarm_should_throw = 0;
       if (! setjmp (read_alarm_throw))
-	nread = (*read_socket_hook) (0, buf, 256, 1);
+	nread = (*read_socket_hook) (0, buf, 256, 1, 0);
       else
 	nread = -1;
 
@@ -5306,1542 +5288,4 @@ strsignal (code)
   return signame;
 }
 #endif /* HAVE_STRSIGNAL */
-
-/* All the Macintosh stuffs go here */
-
-#ifdef macintosh
-
-#include <Files.h>
-#include <MacTypes.h>
-#include <TextUtils.h>
-#include <Folders.h>
-
-#include <dirent.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <pwd.h>
-#include <sys/param.h>
-
-/* Convert a Mac pathname to Unix form.  A Mac full pathname is one
-   that does not begin with a ':' and contains at least one ':'. A Mac
-   full pathname causes an '/' to be prepended to the Unix pathname.
-   The algorithm for the rest of the pathname is as follows:
-     For each segment between two ':',
-       if it is non-null, copy as is and then add a '/' at the end,
-       otherwise, insert a "../" into the Unix pathname.
-   Returns 1 if successful; 0 if fails.  */
-   
-int
-Mac2UnixPathname (const char *mfn, char *ufn, int ufnbuflen)
-{
-  const char *p, *q, *pe;
-	
-  strcpy (ufn, "");
-	
-  if (*mfn == '\0')
-    return 1;
-	
-  p = strchr (mfn, ':');
-  if (p != 0 && p != mfn)  /* full pathname */
-    strcat (ufn, "/");
-		
-  p = mfn;
-  if (*p == ':')
-    p++;
-
-  pe = mfn + strlen (mfn);
-  while (p < pe)
-    {
-      q = strchr (p, ':');
-      if (q)
-	{
-	  if (q == p)
-	    {  /* two consecutive ':' */
-	      if (strlen (ufn) + 3 >= ufnbuflen)
-		return 0;
-	      strcat (ufn, "../");
-	    }
-	  else
-	    {
-	      if (strlen (ufn) + (q - p) + 1 >= ufnbuflen)
-		return 0;
-	      strncat (ufn, p, q - p);
-	      strcat (ufn, "/");
-	    }
-	  p = q + 1;
-	}
-      else
-	{
-	  if (strlen (ufn) + (pe - p) >= ufnbuflen)
-	    return 0;
-	  strncat (ufn, p, pe - p);  /* no separator for last one */
-	  p = pe;
-	}
-    }
-	
-  return 1;
-}
-
-extern char *GetTempDirName ();
-
-/* Convert a Unix pathname to Mac form.  Approximately reverse of the
-   above in algorithm.  */
-int
-Unix2MacPathname (const char *ufn, char *mfn, int mfnbuflen)
-{
-  const char *p, *q, *pe;
-  char expandedPathname[MAXPATHLEN+1];
-	
-  strcpy (mfn, "");
-	
-  if (*ufn == '\0')
-    return 1;
-
-  p = ufn;
-  
-  /* Check for and handle volume names.  Last comparison: strangely
-     somewhere `/.emacs' is passed.  A temporary fix for now.  */
-  if (*p == '/' && strchr (p+1, '/') == NULL && strcmp (p, "/.emacs") != 0)
-    {
-      if (strlen (p) + 1 > mfnbuflen)
-	return 0;
-      strcpy (mfn, p+1);
-      strcat (mfn, ":");
-      return 1;
-    }
-
-  if (strncmp (p, "~emacs/", 7) == 0)
-    {  /* expand to emacs dir found by InitEmacsPasswdDir */
-      struct passwd *pw = getpwnam ("emacs");
-      p += 7;
-      if (strlen (pw->pw_dir) + strlen (p) > MAXPATHLEN)
-	return 0;
-      strcpy (expandedPathname, pw->pw_dir);
-      strcat (expandedPathname, p);
-      p = expandedPathname;
-      /* Now p points to the pathname with emacs dir prefix.  */
-    }
-  else if (strncmp (p, "/tmp/", 5) == 0)
-    {
-      char *t = GetTempDirName ();
-      p += 5;
-      if (strlen (t) + strlen (p) > MAXPATHLEN)
-	return 0;
-      strcpy (expandedPathname, t);
-      strcat (expandedPathname, p);
-      p = expandedPathname;
-      /* Now p points to the pathname with emacs dir prefix.  */
-    }    
-  else if (*p != '/')  /* relative pathname */
-    strcat (mfn, ":");
-		
-  if (*p == '/')
-    p++;
-
-  pe = p + strlen (p);
-  while (p < pe)
-    {
-      q = strchr (p, '/');
-      if (q)
-	{
-	  if (q - p == 2 && *p == '.' && *(p+1) == '.')
-	    {
-	      if (strlen (mfn) + 1 >= mfnbuflen)
-		return 0;
-	      strcat (mfn, ":");
-	    }
-	  else
-	    {
-	      if (strlen (mfn) + (q - p) + 1 >= mfnbuflen)
-		return 0;
-	      strncat (mfn, p, q - p);
-	      strcat (mfn, ":");
-	    }
-	  p = q + 1;
-	}
-      else
-	{
-	  if (strlen (mfn) + (pe - p) >= mfnbuflen)
-	    return 0;
-	  strncat (mfn, p, pe - p);
-	  p = pe;
-	}
-    }
-	
-  return 1;
-}
-
-/* The following functions with "sys_" prefix are stubs to Unix
-   functions that have already been implemented by CW or MPW.  The
-   calls to them in Emacs source course are #define'd to call the sys_
-   versions by the header files s-mac.h.  In these stubs pathnames are
-   converted between their Unix and Mac forms.  */
-/* Unix Epoch is Jan 1, 1970 while Mac Epoch is Jan 1, 1904: 66 years
-   + 17 leap days */
-#define MAC_UNIX_EPOCH_DIFF  ((365L * 66 + 17) * 24 * 60 * 60)
-
-/* CW Epoch is Jan 1, 1900 (aaarghhhhh!); remember, 1900 is not a leap
-   year! */
-#define CW_UNIX_EPOCH_DIFF ((365L * 70 + 17) * 24 * 60 * 60)
-
-/* Define our own stat function for both MrC and CW.  The reason for
-   doing this: "stat" is both the name of a struct and function name:
-   we can't #define stat to something else to
-   redirect Emacs's calls to our own version that converts Unix style
-   filenames to Mac style filename because all sorts of compilation
-   errors will be generated if stat is #define'd to be something else.  */
-
-int
-stat (const char *path, struct stat *buf)
-{
-  char MacPathname[MAXPATHLEN+1];
-  CInfoPBRec cipb;
-	
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-
-  c2pstr (MacPathname);
-  cipb.hFileInfo.ioNamePtr = MacPathname;
-  cipb.hFileInfo.ioVRefNum = 0;
-  cipb.hFileInfo.ioDirID = 0;
-  cipb.hFileInfo.ioFDirIndex = 0;  /* set to 0 to get information about specific dir or file */
-  
-  errno = PBGetCatInfo (&cipb, false);
-  if (errno == -43) /* -43: fnfErr defined in Errors.h */
-    errno = ENOENT;
-  if (errno != noErr)
-    return -1;
-
-  if (cipb.hFileInfo.ioFlAttrib & 0x10)
-    {  /* bit 4 = 1 for directories */
-      buf->st_mode = S_IFDIR | S_IREAD | S_IEXEC;
-      if (!(cipb.hFileInfo.ioFlAttrib & 0x1))  /* bit 1 = 1 for locked files/directories */
-	buf->st_mode |= S_IWRITE;
-      buf->st_ino = cipb.dirInfo.ioDrDirID;
-      buf->st_dev = cipb.dirInfo.ioVRefNum;
-      buf->st_size = cipb.dirInfo.ioDrNmFls;  /* size of dir = number of files and dirs */
-      buf->st_atime = buf->st_mtime = cipb.dirInfo.ioDrMdDat - MAC_UNIX_EPOCH_DIFF;
-      buf->st_ctime = cipb.dirInfo.ioDrCrDat - MAC_UNIX_EPOCH_DIFF;
-    }
-  else
-    {
-      buf->st_mode = S_IFREG | S_IREAD;
-      if (!(cipb.hFileInfo.ioFlAttrib & 0x1))  /* bit 1 = 1 for locked files/directories */
-	buf->st_mode |= S_IWRITE;
-      if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL')
-	buf->st_mode |= S_IEXEC;
-      buf->st_ino = cipb.hFileInfo.ioDirID;
-      buf->st_dev = cipb.hFileInfo.ioVRefNum;
-      buf->st_size = cipb.hFileInfo.ioFlLgLen;
-      buf->st_atime = buf->st_mtime = cipb.hFileInfo.ioFlMdDat - MAC_UNIX_EPOCH_DIFF;
-      buf->st_ctime = cipb.hFileInfo.ioFlCrDat - MAC_UNIX_EPOCH_DIFF;
-    }
-  buf->st_nlink = 1;
-  buf->st_uid = getuid ();
-  buf->st_gid = getgid ();
-  buf->st_rdev = 0;
-
-  return 0;
-}
-
-#if __MRC__
-
-/* CW defines fstat in stat.mac.c while MPW does not provide this
-   function.  Without the information of how to get from a file
-   descriptor in MPW StdCLib to a Mac OS file spec, it should be hard
-   to implement this function.  Fortunately, there is only one place
-   where this function is called in our configuration: in fileio.c,
-   where only the st_dev and st_ino fields are used to determine
-   whether two fildes point to different i-nodes to prevent copying
-   a file onto itself equal.  What we have here probably needs
-   improvement.  */
-int
-fstat (int fildes, struct stat *buf)
-{
-  buf->st_dev = 0;
-  buf->st_ino = fildes;
-  return 0;  /* success */
-}
-
-#endif  /* __MRC__ */
-
-/* From Think Reference code example */
-int
-mkdir (const char *dirname, int mode)
-{
-#pragma unused (mode)
-
-  HFileParam hfpb;
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-
-  c2pstr (MacPathname);
-  hfpb.ioNamePtr = MacPathname;
-  hfpb.ioVRefNum = 0; /*ignored unless name is invalid */
-  hfpb.ioDirID = 0;  /*parent is the root */
-  
-  /* Just return the Mac OSErr code for now.  */
-  errno = PBDirCreate ((HParmBlkPtr) &hfpb, false);
-  return errno == noErr ? 0 : -1;
-}
-
-int
-rmdir (const char *dirname)
-{
-  HFileParam hfpb;
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-
-  c2pstr (MacPathname);
-  hfpb.ioNamePtr = MacPathname;
-  hfpb.ioVRefNum = 0; /*ignored unless name is invalid */
-  hfpb.ioDirID = 0;  /*parent is the root */
-  
-  errno = PBHDelete ((HParmBlkPtr) &hfpb, false);
-  return errno == noErr ? 0 : -1;
-}
-
-#ifdef __MRC__
-
-/* No implementation yet. */
-int
-execvp (const char *path, ...)
-{
-  return -1;
-}
-
-#endif /* __MRC__ */
-
-int
-utime (const char *path, const struct utimbuf *times)
-{
-  char MacPathname[MAXPATHLEN+1];
-  CInfoPBRec cipb;
-	
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-
-  c2pstr (MacPathname);
-  cipb.hFileInfo.ioNamePtr = MacPathname;
-  cipb.hFileInfo.ioVRefNum = 0;
-  cipb.hFileInfo.ioDirID = 0;
-  /* Set to 0 to get information about specific dir or file.  */
-  cipb.hFileInfo.ioFDirIndex = 0;
-  
-  errno = PBGetCatInfo (&cipb, false);
-  if (errno != noErr)
-    return -1;
-
-  if (cipb.hFileInfo.ioFlAttrib & 0x10)
-    {  /* bit 4 = 1 for directories */
-      if (times)
-	cipb.dirInfo.ioDrMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF;
-      else
-	GetDateTime (&cipb.dirInfo.ioDrMdDat);
-    }
-  else
-    {
-      if (times)
-	cipb.hFileInfo.ioFlMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF;
-      else
-	GetDateTime (&cipb.hFileInfo.ioFlMdDat);
-    }
-
-  errno = PBSetCatInfo (&cipb, false);
-  return errno == noErr ? 0 : -1;
-}
-
-#define F_OK 0
-#define X_OK 1
-#define W_OK 2
-
-/* Like stat, but test for access mode in hfpb.ioFlAttrib.  */
-int
-access (const char *path, int mode)
-{
-  char MacPathname[MAXPATHLEN+1];
-  CInfoPBRec cipb;
-	
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-
-  c2pstr (MacPathname);
-  cipb.hFileInfo.ioNamePtr = MacPathname;
-  cipb.hFileInfo.ioVRefNum = 0;
-  cipb.hFileInfo.ioDirID = 0;
-  cipb.hFileInfo.ioFDirIndex = 0;  /* set to 0 to get information about specific dir or file */
-  
-  errno = PBGetCatInfo (&cipb, false);
-  if (errno != noErr)
-    return -1;
-
-  if (mode == F_OK)  /* got this far, file exists */
-    return 0;
-
-  if (mode & X_OK)
-    if (cipb.hFileInfo.ioFlAttrib & 0x10)  /* path refers to a directory */
-      return 0;
-    else
-      {
-	if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL')
-	  return 0;
-	else
-	  return -1;
-      }
-
-  if (mode & W_OK)
-    return (cipb.hFileInfo.ioFlAttrib & 0x1) ? -1 : 0;  /* don't allow if lock bit on */
-
-  return -1;
-}
-
-#define DEV_NULL_FD 0x10000
-
-#undef open
-int
-sys_open (const char *path, int oflag)
-{
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (strcmp (path, "/dev/null") == 0)
-    return DEV_NULL_FD;  /* some bogus fd to be ignored in write */
-
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-  else
-    return open (MacPathname, oflag);
-}
-
-#undef creat
-int
-sys_creat (const char *path, mode_t mode)
-{
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-  else
-    return creat (MacPathname, mode);
-}
-
-#undef unlink
-int
-sys_unlink (const char *path)
-{
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0)
-    return -1;
-  else
-    return unlink (MacPathname);
-}
-
-#undef read
-int
-sys_read (int fildes, char *buf, int count)
-{
-  if (fildes == 0)
-    {  /* if stdin, call (non-echoing) "getch" in console.h */
-      if (MacKeyPending ())
-	{  /* don't wait for a key if none has been pressed */
-	  *buf = MacGetChar ();
-	  return 1;
-	}
-      else
-	return 0;
-    }
-  else
-    return read (fildes, buf, count);
-}
-
-#undef write
-int
-sys_write (int fildes, char *buf, int count)
-{
-  if (fildes == DEV_NULL_FD)
-    return count;
-  else
-    return write (fildes, buf, count);
-}
-
-#undef rename
-int
-sys_rename (const char * old_name, const char * new_name)
-{
-  char MacOldName[MAXPATHLEN+1], MacNewName[MAXPATHLEN+1];
-	
-  if (strcmp (old_name, new_name) == 0)
-    return 0;
-
-  if (Unix2MacPathname (old_name, MacOldName, MAXPATHLEN+1) == 0)
-    return 1;
-		
-  if (Unix2MacPathname (new_name, MacNewName, MAXPATHLEN+1) == 0)
-    return 1;
-
-  return rename (MacOldName, MacNewName);
-}
-
-#undef fopen
-extern FILE *fopen (const char *name, const char *mode);
-FILE 
-sys_fopen (const char *name, const char *mode)
-{
-  char MacPathname[MAXPATHLEN+1];
-	
-  if (Unix2MacPathname (name, MacPathname, MAXPATHLEN+1) == 0)
-    return 0;
-  else
-    return fopen (MacPathname, mode);
-}
-
-#include <Events.h>
-
-long targetTicks = 0;
-
-#ifdef __MRC__
-__sigfun alarm_signal_func = (__sigfun) 0;
-#elif __MWERKS__
-__signal_func_ptr alarm_signal_func = (__signal_func_ptr) 0;
-#else
-You lose!!!
-#endif
-
-/* These functions simulate SIG_ALRM.  The stub for function signal
-   stores the signal handler function in alarm_signal_func if a
-   SIG_ALRM is encountered.  CheckAlarm is called in mac_read_socket,
-   which emacs calls periodically.  A pending alarm is represented by
-   a non-zero targetTicks value.  CheckAlarm calls the handler
-   function pointed to by alarm_signal_func if one has been set up and
-   an alarm is pending.  */
-void
-CheckAlarm ()
-{
-  if (targetTicks && TickCount () > targetTicks)
-    {
-      targetTicks = 0;
-      if (alarm_signal_func)
-	(*alarm_signal_func)(SIGALRM);
-    }
-}
-
-/* Called in sys_select to wait for an alarm signal to arrive.  */
-int
-pause ()
-{
-  unsigned long finalTick;
-  
-  if (!targetTicks)  /* no alarm pending */
-    return -1;
-
-  while (TickCount () <= targetTicks)
-    Delay (1UL, &finalTick);  /* wait for 1/60 second before trying again */
-  
-  targetTicks = 0;
-  if (alarm_signal_func)
-    (*alarm_signal_func)(SIGALRM);
-  
-  return 0;
-}
-
-int
-alarm (int seconds)
-{
-  long remaining = targetTicks ? (TickCount () - targetTicks) / 60 : 0;
-	
-  targetTicks = seconds ? TickCount () + 60 * seconds : 0;
-	
-  return (remaining < 0) ? 0 : (unsigned int) remaining;
-}
-
-#undef signal
-#ifdef __MRC__
-extern __sigfun signal (int signal, __sigfun signal_func);
-__sigfun
-sys_signal (int signal_num, __sigfun signal_func)
-#elif __MWERKS__
-extern __signal_func_ptr signal (int signal, __signal_func_ptr signal_func);
-__signal_func_ptr
-sys_signal (int signal_num, __signal_func_ptr signal_func)
-#else
-     You lose!!!
-#endif
-{
-  if (signal_num != SIGALRM)
-    return signal (signal_num, signal_func);
-  else
-    {
-#ifdef __MRC__
-      __sigfun old_signal_func;		
-#elif __MWERKS__
-      __signal_func_ptr old_signal_func;		
-#else
-      You lose!!!
-#endif
-	old_signal_func = alarm_signal_func;
-      alarm_signal_func = signal_func;
-      return old_signal_func;
-    }
-}
-
-/* The time functions adjust time values according to the difference
-   between the Unix and CW epoches. */
-
-#undef gmtime
-extern struct tm *gmtime (const time_t *);
-struct tm 
-sys_gmtime (const time_t *timer)
-{
-  time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF;
-  
-  return gmtime (&unixTime);
-}
-
-#undef localtime
-extern struct tm *localtime (const time_t *);
-struct tm *
-sys_localtime (const time_t *timer)
-{
-  time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF;
-  
-  return localtime (&unixTime);
-}
-
-#undef ctime
-extern char *ctime (const time_t *);
-char *
-sys_ctime (const time_t *timer)
-{
-  time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF;
-  
-  return ctime (&unixTime);
-}
-
-#undef time
-extern time_t time (time_t *);
-time_t
-sys_time (time_t *timer)
-{
-  time_t macTime = time (NULL) - CW_UNIX_EPOCH_DIFF;
-
-  if (timer)
-    *timer = macTime;
-    
-  return macTime;
-}
-
-/* no subprocesses, empty wait */
-int
-wait (int pid)
-{
-  return 0;
-}
-
-void
-croak (char *badfunc)
-{
-  printf ("%s not yet implemented\r\n", badfunc);
-  exit (1);
-}
-
-char *
-index (const char * str, int chr)
-{
-  return strchr (str, chr);
-}
-
-char *e[] = { 0 };
-char **environ = &e[0];
-
-char *
-mktemp (char *template)
-{
-  int len, k;
-  static seqnum = 0;
-  
-  len = strlen (template);
-  k = len - 1;
-  while (k >= 0 && template[k] == 'X')
-    k--;
-  
-  k++;  /* make k index of first 'X' */
-  
-  if (k < len)
-    {
-      /* Zero filled, number of digits equal to the number of X's.  */
-      sprintf (&template[k], "%0*d", len-k, seqnum++);
-  
-      return template;
-    }
-  else
-    return 0;  
-}
-
-/* Emulate getpwuid, getpwnam and others.  */
-
-#define PASSWD_FIELD_SIZE 256
-
-static char myPasswdName[PASSWD_FIELD_SIZE];
-static char myPasswdDir[MAXPATHLEN+1];
-
-static struct passwd myPasswd = 
-{
-  myPasswdName,
-  myPasswdDir,
-};
-
-/* Initialized by main () in macterm.c to pathname of emacs directory.  */
-char emacsPasswdDir[MAXPATHLEN+1];
-
-void
-InitEmacsPasswdDir ()
-{
-  int found = false;
-
-  if (getwd (emacsPasswdDir) && getwd (myPasswdDir))
-    {  
-      /* Need pathname of first ancestor that begins with `emacs' since
-	 Mac emacs application is somewhere in the emacs-20.3 tree.  */
-      int len = strlen (emacsPasswdDir);
-      /* J points to the "/" following the directory name being compared.  */
-      int j = len - 1;
-      int i = j - 1;
-      while (i >= 0 && !found)
-	{
-	  while (i >= 0 && emacsPasswdDir[i] != '/')
-	    i--;
-	  if (emacsPasswdDir[i] == '/' && i+5 < len)
-	    found = (strncmp (&(emacsPasswdDir[i+1]), "emacs", 5) == 0);
-	  if (found)
-	    emacsPasswdDir[j+1] = '\0';
-	  else
-	    {
-	      j = i;
-	      i = j - 1;
-	    }
-	}
-    }
-  
-  if (!found)
-    {  /* setting to "/" probably won't work,
-	  but set it to something anyway.  */
-      strcpy (emacsPasswdDir, "/");
-      strcpy (myPasswdDir, "/");
-    }
-}
-
-static struct passwd emacsPasswd = 
-{
-  "emacs",
-  emacsPasswdDir,
-};
-
-static int myPasswdInited = 0;
-
-static void
-InitMyPasswd ()
-{
-  char **ownerName;
-
-  /* Note: myPasswdDir initialized in InitEmacsPasswdDir to directory
-     where Emacs was started. */
-
-  ownerName = (char **) GetResource ('STR ',-16096);
-  if (ownerName)
-    {
-      HLock (ownerName);
-      BlockMove ((unsigned char *) *ownerName,
-		 (unsigned char *) myPasswdName, *ownerName[0] + 1);
-      HUnlock (ownerName);
-      p2cstr ((unsigned char *) myPasswdName);
-    }
-  else
-    myPasswdName[0] = 0;
-}
-
-struct passwd *
-getpwuid (uid_t uid)
-{
-  if (!myPasswdInited)
-    {  
-      InitMyPasswd ();
-      myPasswdInited = 1;
-    }
-  
-  return &myPasswd;
-}
-
-struct passwd *
-getpwnam (const char *name)
-{
-  if (strcmp (name, "emacs") == 0)
-  	return &emacsPasswd;
-
-  if (!myPasswdInited)
-    {  
-      InitMyPasswd ();
-      myPasswdInited = 1;
-    }
-  
-  return &myPasswd;
-}
-
-/* The functions fork, kill, sigsetmask, sigblock, request_sigio,
-   setpgrp, setpriority, and unrequest_sigio are defined to be empty
-   as in msdos.c.  */
-
-int
-fork ()
-{
-  return -1;
-}
-
-int
-kill (int x, int y)
-{
-  return -1;
-}
-
-int
-sigsetmask (int x)
-{
-  return 0;
-}
-
-int
-sigblock (int mask)
-{
-  return 0;
-} 
-
-void
-request_sigio (void)
-{
-}
-
-int
-setpgrp ()
-{
-  return 0;
-}
-
-void
-unrequest_sigio (void)
-{
-}
-
-/* djgpp does not implement pipe either.  */
-int
-pipe (int _fildes[2])
-{
-  errno = EACCES;
-  return -1;
-}
-
-/* Hard and symbolic links.  */
-int
-symlink (const char *name1, const char *name2)
-{
-  errno = ENOENT;
-  return -1;
-}
-
-int
-link (const char *name1, const char *name2)
-{
-  errno = ENOENT;
-  return -1;
-}
-
-int
-lstat (const char *path, struct stat *sb)
-{
-  return stat (path, sb);
-}
-
-int
-readlink (const char *path, char *buf, int bufsiz)
-{
-  errno = ENOENT;
-  return -1;
-}
-
-mode_t
-umask (mode_t numask)
-{
-  static mode_t mask = 022;
-  mode_t oldmask = mask;
-  mask = numask;
-  return oldmask;
-}
-
-int
-chmod (const char *path, mode_t mode)
-{
-  /* say it always succeed for now */
-  return 0;
-}
-
-int
-dup (int oldd)
-{
-#ifdef __MRC__
-  return fcntl (oldd, F_DUPFD, 0);
-#elif __MWERKS__
-  /* current implementation of fcntl in fcntl.mac.c simply returns old
-     descriptor */
-  return fcntl (oldd, F_DUPFD);
-#else
-You lose!!!
-#endif
-}
-
-/* This is from the original sysdep.c.  Emulate BSD dup2.  First close
-   newd if it already exists.  Then, attempt to dup oldd.  If not
-   successful, call dup2 recursively until we are, then close the
-   unsuccessful ones.  */
-int
-dup2 (int oldd, int newd)
-{
-  int fd, ret;
-  
-  close (newd);
-
-  fd = dup (oldd);
-  if (fd == -1)
-    return -1;
-  if (fd == newd)
-    return newd;
-  ret = dup2 (oldd, newd);
-  close (fd);
-  return ret;
-}
-
-/* let it fail for now */
-char *
-sbrk (int incr)
-{
-  return (char *) -1;
-}
-
-int
-fsync (int fd)
-{
-  return 0;
-}
-
-int
-ioctl (int d, int request, void *argp)
-{
-  return -1;
-}
-
-#ifdef __MRC__
-int
-isatty (int fildes)
-{
-  if (fildes >=0 && fildes <= 2)
-    return 1;
-  else
-    return 0;
-}
-
-int
-getgid ()
-{
-  return 100;
-}
-
-int
-getegid ()
-{
-  return 100;
-}
-
-int
-getuid ()
-{
-  return 200;
-}
-
-int
-geteuid ()
-{
-  return 200;
-}
-
-unsigned int
-sleep (unsigned int seconds)
-{
-  unsigned long finalTick;
-
-  Delay (seconds * 60UL, &finalTick);
-  return (0);
-}
-#endif /* __MRC__ */
-
-#ifdef __MWERKS__
-#undef getpid
-int
-getpid ()
-{
-  return 9999;
-}
-#endif /* __MWERKS__ */
-
-/* Return the path to the directory in which Emacs can create
-   temporary files.  The MacOS "temporary items" directory cannot be
-   used because it removes the file written by a process when it
-   exits.  In that sense it's more like "/dev/null" than "/tmp" (but
-   again not exactly).  And of course Emacs needs to read back the
-   files written by its subprocesses.  So here we write the files to a
-   directory "Emacs" in the Preferences Folder.  This directory is
-   created if it does not exist.  */
-static char *
-GetTempDirName ()
-{
-  static char *TempDirName = NULL;
-  short vRefNum;
-  long dirID;
-  OSErr err;
-  Str255 dirName, fullPath;
-  CInfoPBRec cpb;
-  char unixDirName[MAXPATHLEN+1];
-  DIR *dir;
-  
-  /* Cache directory name with pointer TempDirName.
-     Look for it only the first time.  */
-  if (!TempDirName)
-    {
-      err = FindFolder (kOnSystemDisk, kPreferencesFolderType,
-			kCreateFolder, &vRefNum, &dirID);
-      if (err != noErr)
-	return NULL;
-
-      *fullPath = '\0';
-      cpb.dirInfo.ioNamePtr = dirName;
-      cpb.dirInfo.ioDrParID = dirID;
-    
-      /* Standard ref num to full path name loop */
-      do {
-	cpb.dirInfo.ioVRefNum = vRefNum;
-	cpb.dirInfo.ioFDirIndex = -1;
-	cpb.dirInfo.ioDrDirID = cpb.dirInfo.ioDrParID;
-      
-	err = PBGetCatInfo (&cpb, false);
-      
-	p2cstr (dirName);
-	strcat (dirName, ":");
-	if (strlen (fullPath) + strlen (dirName) <= MAXPATHLEN)
-	  {
-	    strcat (dirName, fullPath);
-	    strcpy (fullPath, dirName);
-	  }
-	else
-	  return NULL;
-      }
-      while (cpb.dirInfo.ioDrDirID != fsRtDirID && err == noErr);
-
-      if (strlen (fullPath) + 6 <= MAXPATHLEN)
-	strcat (fullPath, "Emacs:");
-      else
-	return NULL;
-
-      if (Mac2UnixPathname (fullPath, unixDirName, MAXPATHLEN+1) == 0)
-	return NULL;
-    
-      dir = opendir (unixDirName);  /* check whether temp directory exists */
-      if (dir)
-	closedir (dir);
-      else if (mkdir (unixDirName, 0700) != 0)  /* create it if not */
-	return NULL;
-
-      TempDirName = (char *) xmalloc (strlen (unixDirName) + 1);
-      strcpy (TempDirName, unixDirName);
-    }
-
-  return TempDirName;
-}
-
-char *
-getenv (const char * name)
-{
-  if (strcmp (name, "TERM") == 0)
-    return "vt100";
-  else if (strcmp (name, "TERMCAP") == 0)
-    /* for debugging purpose when code was still outputting to dumb terminal */
-    return "d0|vt100|vt100-am|vt100am|dec vt100:do=[do]:co#100:li#32:cl=[cl]:sf=[sf]:km:\
-:le=[le]:bs:am:cm=[cm-%d,%d]:nd=[nd]:up=[up]:ce=[ce]:cd=[cd]:so=[so]:se=[se]:\
-:us=[us]:ue=[ue]:md=[md]:mr=[mr]:mb=[mb]:me=[me]:is=[is]:\
-:rf=/usr/share/lib/tabset/vt100:rs=[rs]:ks=[ks]:ke=[ke]:\
-:ku=\\036:kd=\\037:kr=\\035:kl=\\034:kb=[kb]:ho=[ho]:k1=[k1]:k2=[k2]:k3=[k3]:k4=[k4]:\
-:pt:sr=[sr]:vt#3:xn:sc=[sc]:rc=[rc]:cs=[cs-%d,%d]";
-  else if (strcmp (name, "TMPDIR") == 0)
-    return GetTempDirName ();
-  else
-    return (NULL);
-}
-
-#ifdef __MRC__
-#include <utsname.h>
-
-int
-uname (struct utsname *name)
-{
-  char **systemName;
-  systemName = GetString (-16413);  /* IM - Resource Manager Reference */
-  if (systemName)
-    {
-      BlockMove (*systemName, name->nodename, (*systemName)[0]+1);
-      p2cstr (name->nodename);
-    }
-  else
-    return -1;
-}
-#endif
-
-#include <Processes.h>
-#include <EPPC.h>
-
-/* Event class of HLE sent to subprocess.  */
-const OSType kEmacsSubprocessSend = 'ESND';
-/* Event class of HLE sent back from subprocess.  */
-const OSType kEmacsSubprocessReply = 'ERPY';
-
-char *
-mystrchr (char *s, char c)
-{
-  while (*s && *s != c)
-    {
-      if (*s == '\\')
-	s++;
-      s++;
-    }
-
-  if (*s)
-    {
-      *s = '\0';
-      return s;
-    }
-  else
-    return NULL;
-}
-
-char *
-mystrtok (char *s)
-{	
-  while (*s)
-    s++;
-
-  return s + 1;
-}
-
-void
-mystrcpy (char *to, char *from)
-{
-  while (*from)
-    {
-      if (*from == '\\')
-	from++;
-      *to++ = *from++;
-    }
-  *to = '\0';
-}
-
-/* Start a Mac subprocess.  Arguments for it is passed in argv (null
-   terminated).  The process should run with the default directory
-   "workdir", read input from "infn", and write output and error to
-   "outfn" and "errfn", resp.  The Process Manager call
-   LaunchApplication is used to start the subprocess.  We use high
-   level events as the mechanism to pass arguments to the subprocess
-   and to make Emacs wait for the subprocess to terminate and pass
-   back a result code.  The bulk of the code here packs the arguments
-   into one message to be passed together with the high level event.
-   Emacs also sometimes starts a subprocess using a shell to perform
-   wildcard filename expansion.  Since we don't really have a shell on
-   the Mac, this case is detected and the starting of the shell is
-   by-passed.  We really need to add code here to do filename
-   expansion to support such functionality. */
-int
-run_mac_command (argv, workdir, infn, outfn, errfn)
-     unsigned char **argv;
-     const char *workdir;
-     const char *infn, *outfn, errfn;
-{
-  char macappname[MAXPATHLEN+1], macworkdir[MAXPATHLEN+1];
-  char macinfn[MAXPATHLEN+1], macoutfn[MAXPATHLEN+1], macerrfn[MAXPATHLEN+1];
-  int paramlen, argc, newargc, j, retries;
-  char **newargv, *param, *p;
-  OSErr iErr;
-  FSSpec spec;
-  LaunchParamBlockRec lpbr;
-  EventRecord sendEvent, replyEvent;
-  RgnHandle cursorRegionHdl;
-  TargetID targ;
-  unsigned long refCon, len;
- 	
-  if (Unix2MacPathname (workdir, macworkdir, MAXPATHLEN+1) == 0)
-    return -1;
-  if (Unix2MacPathname (infn, macinfn, MAXPATHLEN+1) == 0)
-    return -1;
-  if (Unix2MacPathname (outfn, macoutfn, MAXPATHLEN+1) == 0)
-    return -1;
-  if (Unix2MacPathname (errfn, macerrfn, MAXPATHLEN+1) == 0)
-    return -1;
-  
-  paramlen = strlen (macworkdir) + strlen (macinfn) + strlen (macoutfn) + strlen (macerrfn) + 4;
-  /* count nulls at end of strings */
-
-  argc = 0;
-  while (argv[argc])
-    argc++;
-
-  if (argc == 0)
-    return -1;
-
-  /* If a subprocess is invoked with a shell, we receive 3 arguments of the form:
-     "<path to emacs bins>/sh" "-c" "<path to emacs bins>/<command> <command args>" */
-  j = strlen (argv[0]);
-  if (j >= 3 && strcmp (argv[0]+j-3, "/sh") == 0 && argc == 3 && strcmp (argv[1], "-c") == 0)
-    {
-      char *command, *t, tempmacpathname[MAXPATHLEN+1];
-    
-      /* The arguments for the command in argv[2] are separated by
-	 spaces.  Count them and put the count in newargc.  */
-      command = (char *) alloca (strlen (argv[2])+2);
-      strcpy (command, argv[2]);
-      if (command[strlen (command) - 1] != ' ')
-	strcat (command, " ");
-    
-      t = command;
-      newargc = 0;
-      t = mystrchr (t, ' ');
-      while (t)
-	{
-	  newargc++;
-	  t = mystrchr (t+1, ' ');
-	}
-    
-      newargv = (char **) alloca (sizeof (char *) * newargc);
-    
-      t = command;
-      for (j = 0; j < newargc; j++)
-	{
-	  newargv[j] = (char *) alloca (strlen (t) + 1);
-	  mystrcpy (newargv[j], t);
-
-	  t = mystrtok (t);
-	  paramlen += strlen (newargv[j]) + 1;
-	}
-    
-      if (strncmp (newargv[0], "~emacs/", 7) == 0)
-	{
-	  if (Unix2MacPathname (newargv[0], tempmacpathname, MAXPATHLEN+1) == 0)
-	    return -1;
-	}
-      else
-	{  /* sometimes Emacs call "sh" without a path for the command */
-#if 0
-	  char *t = (char *) alloca (strlen (newargv[0]) + 7 + 1);
-	  strcpy (t, "~emacs/");
-	  strcat (t, newargv[0]);
-#endif
-	  Lisp_Object path;
-	  openp (Vexec_path, build_string (newargv[0]), EXEC_SUFFIXES, &path, 1);
-
-	  if (NILP (path))
-	    return -1;
-	  if (Unix2MacPathname (XSTRING (path)->data, tempmacpathname, MAXPATHLEN+1) == 0)
-	    return -1;
-	}
-      strcpy (macappname, tempmacpathname);
-    }
-  else
-    {      
-      if (Unix2MacPathname (argv[0], macappname, MAXPATHLEN+1) == 0)
-	return -1;
-
-      newargv = (char **) alloca (sizeof (char *) * argc);
-      newargc = argc;  
-      for (j = 1; j < argc; j++)
-	{
-	  if (strncmp (argv[j], "~emacs/", 7) == 0)
-	    {
-	      char *t = strchr (argv[j], ' ');
-	      if (t)
-		{
-		  char tempcmdname[MAXPATHLEN+1], tempmaccmdname[MAXPATHLEN+1];
-		  strncpy (tempcmdname, argv[j], t-argv[j]);
-		  tempcmdname[t-argv[j]] = '\0';
-		  if (Unix2MacPathname (tempcmdname, tempmaccmdname, MAXPATHLEN+1) == 0)
-		    return -1;
-		  newargv[j] = (char *) alloca (strlen (tempmaccmdname) + strlen (t) + 1);
-		  strcpy (newargv[j], tempmaccmdname);
-		  strcat (newargv[j], t);
-		}
-	      else
-		{
-		  char tempmaccmdname[MAXPATHLEN+1];
-		  if (Unix2MacPathname (argv[j], tempmaccmdname, MAXPATHLEN+1) == 0)
-		    return -1;
-		  newargv[j] = (char *) alloca (strlen (tempmaccmdname)+1);
-		  strcpy (newargv[j], tempmaccmdname);
-		}
-	    }
-	  else
-	    newargv[j] = argv[j];  
-	  paramlen += strlen (newargv[j]) + 1;
-	}
-    }
-
-  /* After expanding all the arguments, we now know the length of the parameter block to be
-     sent to the subprocess as a message attached to the HLE. */
-  param = (char *) xmalloc (paramlen + 1);
-  if (!param)
-    return -1;
-
-  p = param;
-  *p++ = newargc;  /* first byte of message contains number of arguments for command */
-  strcpy (p, macworkdir);
-  p += strlen (macworkdir);
-  *p++ = '\0';  /* null terminate strings sent so it's possible to use strcpy over there */
-  strcpy (p, macinfn);
-  p += strlen (macinfn);
-  *p++ = '\0';  
-  strcpy (p, macoutfn);
-  p += strlen (macoutfn);
-  *p++ = '\0';  
-  strcpy (p, macerrfn);
-  p += strlen (macerrfn);
-  *p++ = '\0';  
-  for (j = 1; j < newargc; j++) {
-    strcpy (p, newargv[j]);
-    p += strlen (newargv[j]);
-    *p++ = '\0';  
-  }
-  
-  c2pstr (macappname);
-  
-  iErr = FSMakeFSSpec (0, 0, macappname, &spec);
-  
-  if (iErr != noErr) {
-    xfree (param);
-    return -1;
-  }
-
-  lpbr.launchBlockID = extendedBlock;
-  lpbr.launchEPBLength = extendedBlockLen;
-  lpbr.launchControlFlags = launchContinue + launchNoFileFlags;
-  lpbr.launchAppSpec = &spec;
-  lpbr.launchAppParameters = NULL;
-
-  iErr = LaunchApplication (&lpbr);  /* call the subprocess */
-  if (iErr != noErr)
-    {
-      xfree (param);
-      return -1;
-    }
-
-  sendEvent.what = kHighLevelEvent;
-  sendEvent.message = kEmacsSubprocessSend;  /* Event ID stored in "where" unused */
-
-  retries = 3;
-  do {  /* OS may think current subprocess has terminated if previous one terminated recently */
-    iErr = PostHighLevelEvent (&sendEvent, &lpbr.launchProcessSN, 0, param, paramlen + 1, receiverIDisPSN);
-  }
-  while (iErr == sessClosedErr && retries-- > 0);
-
-  if (iErr != noErr) {
-    xfree (param);
-    return -1;
-  }
-
-  cursorRegionHdl = NewRgn ();
-	
-  /* Wait for the subprocess to finish, when it will send us a ERPY high level event */
-  while (1)
-    if (WaitNextEvent (highLevelEventMask, &replyEvent, 180, cursorRegionHdl) && replyEvent.message == kEmacsSubprocessReply)
-      break;
-  
-  /* The return code is sent through the refCon */
-  iErr = AcceptHighLevelEvent (&targ, &refCon, NULL, &len);
-  if (iErr != noErr) {
-    DisposeHandle ((Handle) cursorRegionHdl);
-    xfree (param);
-    return -1;
-  }
-  
-  DisposeHandle ((Handle) cursorRegionHdl);
-  xfree (param);
-
-  return refCon;
-}
-
-DIR *
-opendir (const char *dirname)
-{
-  char MacPathname[MAXPATHLEN+1];
-  DIR *dirp;
-  CInfoPBRec cipb;
-  int len;
-
-  dirp = (DIR *) xmalloc (sizeof (DIR));
-  if (!dirp)
-    return 0;
-
-  /* Handle special case when dirname is "/": sets up for readir to
-     get all mount volumes. */
-  if (strcmp (dirname, "/") == 0) {
-    dirp->getting_volumes = 1;  /* special all mounted volumes DIR struct */
-    dirp->current_index = 1;  /* index for first volume */
-    return dirp;
-  }
-
-  /* Handle typical cases: not accessing all mounted volumes. */
-  if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0)
-    return 0;
-
-  /* Emacs calls opendir without the trailing '/', Mac needs trailing ':' */
-  len = strlen (MacPathname);
-  if (MacPathname[len - 1] != ':' && len < MAXPATHLEN)
-    strcat (MacPathname, ":");
-
-  c2pstr (MacPathname);
-  cipb.hFileInfo.ioNamePtr = MacPathname;  /* using full pathname so vRefNum and dirID ignored */
-  cipb.hFileInfo.ioVRefNum = 0;
-  cipb.hFileInfo.ioDirID = 0;
-  cipb.hFileInfo.ioFDirIndex = 0;  /* set to 0 to get information about specific dir or file */
-  
-  errno = PBGetCatInfo (&cipb, false);
-  if (errno != noErr) {
-    errno = ENOENT;
-    return 0;
-  }
-
-  if (!(cipb.hFileInfo.ioFlAttrib & 0x10))  /* bit 4 = 1 for directories */
-    return 0;  /* not a directory */
-
-  dirp->dir_id = cipb.dirInfo.ioDrDirID;  /* used later in readdir */
-  dirp->getting_volumes = 0;
-  dirp->current_index = 1;  /* index for first file/directory */
-  
-  return dirp;
-}
-
-int
-closedir (DIR *dp)
-{
-  xfree (dp);
-  return 0;
-}
-
-struct dirent *
-readdir (DIR *dp)
-{
-  HParamBlockRec HPBlock;
-  CInfoPBRec cipb;
-  static struct dirent s_dirent;
-  static Str255 s_name;
-  int done;
-
-  /* Handle the root directory containing the mounted volumes.  Call
-     PBHGetVInfo specifying an index to obtain the info for a volume.
-     PBHGetVInfo returns an error when it receives an index beyond the
-     last volume, at which time we should return a nil dirent struct
-     pointer. */
-  if (dp->getting_volumes) {
-    HPBlock.volumeParam.ioNamePtr = s_name;
-    HPBlock.volumeParam.ioVRefNum = 0;
-    HPBlock.volumeParam.ioVolIndex = dp->current_index;
-                
-    errno = PBHGetVInfo (&HPBlock, false);
-    if (errno != noErr) {
-      errno = ENOENT;
-      return 0;
-    }
-                        
-    p2cstr (s_name);
-    strcat (s_name, "/");  /* need "/" for stat to work correctly */
-
-    dp->current_index++;
-
-    s_dirent.d_ino = cipb.dirInfo.ioDrDirID;
-    s_dirent.d_name = s_name;
-  
-    return &s_dirent;
-  }
-  else {
-    cipb.hFileInfo.ioVRefNum = 0;
-    cipb.hFileInfo.ioNamePtr = s_name;  /* location to receive filename returned */
-
-    /* return only visible files */
-    done = false;
-    while (!done) {
-      cipb.hFileInfo.ioDirID = dp->dir_id;  /* directory ID found by opendir */
-      cipb.hFileInfo.ioFDirIndex = dp->current_index;
-
-      errno = PBGetCatInfo (&cipb, false);
-      if (errno != noErr) {
-        errno = ENOENT;
-        return 0;
-      }
-
-      /* insist on an visibile entry */
-      if (cipb.hFileInfo.ioFlAttrib & 0x10)  /* directory? */
-        done = !(cipb.dirInfo.ioDrUsrWds.frFlags & fInvisible);
-      else
-        done = !(cipb.hFileInfo.ioFlFndrInfo.fdFlags & fInvisible);
-
-      dp->current_index++;
-    }
-
-    p2cstr (s_name);
-
-    s_dirent.d_ino = cipb.dirInfo.ioDrDirID;  /* value unimportant: non-zero for valid file */
-    s_dirent.d_name = s_name;
-  
-    return &s_dirent;
-  }
-}
-
-char *
-getwd (char *path)
-{
-  char MacPathname[MAXPATHLEN+1];
-  Str255 directoryName;
-  OSErr errno;
-  CInfoPBRec cipb;
-
-  MacPathname[0] = '\0';
-  directoryName[0] = '\0';
-  cipb.dirInfo.ioDrParID = 0;
-  cipb.dirInfo.ioNamePtr = directoryName;  /* empty string = default directory */
-
-  do {
-    cipb.dirInfo.ioVRefNum = 0;
-    cipb.dirInfo.ioFDirIndex = -1;
-    cipb.dirInfo.ioDrDirID = cipb.dirInfo.ioDrParID;  /* go up to parent each time */
-
-    errno = PBGetCatInfo (&cipb, false);
-    if (errno != noErr) {
-      errno = ENOENT;
-      return 0;
-    }
-
-    p2cstr (directoryName);
-    strcat (directoryName, ":");
-    strcat (directoryName, MacPathname);  /* attach to front since going up directory tree */
-    strcpy (MacPathname, directoryName);
-  } while (cipb.dirInfo.ioDrDirID != fsRtDirID);  /* until volume's root directory */
-
-  if (Mac2UnixPathname (MacPathname, path, MAXPATHLEN+1) == 0)
-    return 0;
-  else
-    return path;
-}
 
-#endif /* macintosh */