Support #!, to allow XEmacs to be called as a script interpreter. ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * Makefile.in.in (SHEBANG_PROGNAME): New variable; a symbol link to the XEmacs binary to tell it it should read a script from stdin. * configure.ac (XE_EXPAND_VARIABLE): Set SHEBANG_PROGNAME. * configure: Regenerate. src/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * config.h.in: Add SHEBANG_PROGNAME. * emacs.c (main_1): If we've been called using SHEBANG_PROGNAME, rewrite our arguments to add a --script argument. Also, handle the --script argument by setting noninteractive and vanilla. * lread.c (Fload_internal): If the first two characters of a file are #!, replace them with ;! before they get to the Lisp reader. lisp/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * startup.el (command-line-do-script): New. (command-switch-alist): Use command-line-do-script. New argument, compatible with GNU; --script or -script says "treat the following argument as a file to load in batch mode". man/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * xemacs/cmdargs.texi (Command Switches): Describe --script, -script.

/* Program to produce output at regular intervals.  */

#include <config.h>

#if __STDC__ || defined(STDC_HEADERS)
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#endif

#include <stdio.h>
#include <sys/types.h>

#ifdef WIN32_NATIVE
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef sleep
#define sleep(t) Sleep ((t) * 1000)
#define getppid() (0)
#undef HAVE_SYS_TIME_H
#endif /* WIN32_NATIVE */

#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif

int
main (int argc, char *argv[])
{
  int period = 60;

  if (argc > 1)
    period = atoi (argv[1]);

  while (1)
    {
      /* Make sure wakeup stops when Emacs goes away.  */
      if (getppid () == 1)
	return 0;
      printf ("Wake up!\n");
      /* If fflush fails, then our stdout pipe is broken. */
      if (fflush (stdout) != 0)
	return 0;
      /* If using a period of 60, produce the output when the minute
	 changes. */
      if (period == 60)
	{
	  time_t when;
	  struct tm *tp;
	  time (&when);
	  tp = localtime (&when);
	  sleep (60 - tp->tm_sec);
	}
      else
	sleep (period);
    }
}