bug#4616: 23.1.50; empty script files

[Markus Rost <rost@math.uni-bielefeld.de>]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:


Execute an Emacs script file with no actual lisp code in it, like this:

===File ~/x.el==============================================
#!/home/rost/build/cvs/emacs/src/emacs --script

============================================================

One gets an error:

End of file during parsing: /home/rost/x.el

Same problem if the file has some additional ";"-commented lines in it.
No problem if there is a single not commented lisp expression in it,
like "()".

This patch fixes the problem for me:

*** lread.c	02 Oct 2009 14:05:54 +0200	1.414
--- lread.c	02 Oct 2009 14:11:36 +0200	
***************
*** 2613,2619 ****
  	     Skip the first line.  */
  	  while (c != '\n' && c >= 0)
  	    c = READCHAR;
! 	  goto retry;
  	}
        if (c == '$')
  	return Vload_file_name;
--- 2613,2619 ----
  	     Skip the first line.  */
  	  while (c != '\n' && c >= 0)
  	    c = READCHAR;
! 	  return Qnil;
  	}
        if (c == '$')
  	return Vload_file_name;


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/home/rost/build/cvs/emacs/etc/DEBUG for instructions.


In GNU Emacs 23.1.50.1 (i686-pc-linux-gnu, GTK+ Version 2.16.1)
 of 2009-10-02 on laptop
Windowing system distributor `The X.Org Foundation', version 11.0.10600000
configured using `configure  '--prefix=/home/rost/local/cvs''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <down-mouse-1> 
<mouse-1> M-x r e p SPC o r SPC e m SPC SPC SPC <r
eturn>

Recent messages:
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