System: rn version 4.3
Patch #: 23
Priority: HIGH for sites without line buffering
Subject: the NOLINEBUF option doesn't work
>From: msb@lsuc.UUCP (Mark Brader)

Description:
	Rn has a hidden feature such that if you define NOLINEBUF it is
	supposed to do its own buffering, so that a system call isn't
	made on every character of output.  Unfortunately, the feature
	was never tested, and had two glaring errors right at the start.
	The buffer for stdout was declared as auto rather than static,
	and the setbuf() call was missing an argument.  Heesh.

Fix:	From rn, say "| patch -d DIR", where DIR is your rn source directory.
	Outside of rn, say "cd DIR; patch <thisarticle".  If you don't have
	the patch program, apply the following by hand, or get patch.

	If patch indicates that patchlevel is the wrong version, you may need
	to apply one or more previous patches, or the patch may already
	have been applied.  See the patchlevel file to find out what has or
	has not been applied.  In any event, don't continue with the patch.

Index: patchlevel
Prereq: 22
1c1
< Patch #: 22
---
> Patch #: 23

Index: init.c
Prereq: 4.3.1.2
*** init.c.old	Tue Jul 23 18:09:36 1985
--- init.c	Tue Jul 23 18:09:42 1985
***************
*** 1,4
! /* $Header: init.c,v 4.3.1.2 85/05/21 14:22:46 lwall Exp $
   *
   * $Log:	init.c,v $
   * Revision 4.3.1.2  85/05/21  14:22:46  lwall

--- 1,4 -----
! /* $Header: init.c,v 4.3.1.3 85/07/23 18:08:36 lwall Exp $
   *
   * $Log:	init.c,v $
   * Revision 4.3.1.3  85/07/23  18:08:36  lwall
***************
*** 1,6
  /* $Header: init.c,v 4.3.1.2 85/05/21 14:22:46 lwall Exp $
   *
   * $Log:	init.c,v $
   * Revision 4.3.1.2  85/05/21  14:22:46  lwall
   * Sped up "rn -c" by avoiding unnecessary initialization.
   * 

--- 1,9 -----
  /* $Header: init.c,v 4.3.1.3 85/07/23 18:08:36 lwall Exp $
   *
   * $Log:	init.c,v $
+  * Revision 4.3.1.3  85/07/23  18:08:36  lwall
+  * Fixed up NOLINEBUF option to work.
+  * 
   * Revision 4.3.1.2  85/05/21  14:22:46  lwall
   * Sped up "rn -c" by avoiding unnecessary initialization.
   * 
***************
*** 51,57
      register bool foundany = FALSE;
      long time();
  #ifdef NOLINEBUF
!     char std_out_buf[BUFSIZ];
  
      setbuf(std_out_buf);
  #endif

--- 54,60 -----
      register bool foundany = FALSE;
      long time();
  #ifdef NOLINEBUF
!     static char std_out_buf[BUFSIZ];	/* must be static or malloced */
  
      setbuf(stdout, std_out_buf);
  #endif
***************
*** 53,59
  #ifdef NOLINEBUF
      char std_out_buf[BUFSIZ];
  
!     setbuf(std_out_buf);
  #endif
  
      tcbuf = safemalloc(1024);		/* make temp buffer for termcap and */

--- 56,62 -----
  #ifdef NOLINEBUF
      static char std_out_buf[BUFSIZ];	/* must be static or malloced */
  
!     setbuf(stdout, std_out_buf);
  #endif
  
      tcbuf = safemalloc(1024);		/* make temp buffer for termcap and */