Bringing up to version 1.33.

Reviewed by: Sean Eric Fagan
svn path=/head/; revision=2094
2024-12-04 09:09:56 +00:00 · 1994-08-17 22:18:26 +00:00 · 1994-08-17 22:18:26 +00:00 · 6d20d793f5 · 2020-12-20 02:59:44 +00:00
commit 6d20d793f5
parent 57eb4d53f7
93 changed files with 220 additions and 152 deletions
--- a/usr.bin/vi/README
+++ b/usr.bin/vi/README
@ -1,8 +1,8 @@
-#	@(#)README	8.84 (Berkeley) 8/15/94
+#	@(#)README	8.85 (Berkeley) 8/17/94

-This is the README for version 1.32 of nex/nvi, a freely redistributable
+This is the README for version 1.33 of nex/nvi, a freely redistributable
 replacement for the Berkeley ex and vi text editors.  The compressed or
-gzip'd archive, for this and future versions, can be retrieved by using
+gzip'd archives for this and future versions, can be retrieved by using
 anonymous ftp to ftp.cs.berkeley.edu, from the file ucb/4bsd/nvi.tar.Z,
 or ucb/4bsd/nvi.tar.gz.

--- a/usr.bin/vi/common/cut.c
+++ b/usr.bin/vi/common/cut.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)cut.c	8.32 (Berkeley) 7/28/94";
+static const char sccsid[] = "@(#)cut.c	8.33 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/delete.c
+++ b/usr.bin/vi/common/delete.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)delete.c	8.10 (Berkeley) 4/26/94";
+static const char sccsid[] = "@(#)delete.c	8.11 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/exf.c
+++ b/usr.bin/vi/common/exf.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)exf.c	8.94 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)exf.c	8.96 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
@ -361,7 +361,14 @@ file_init(sp, frp, rcv_name, force)
 	 */
 	set_alt_name(sp, sp->frp == NULL ? NULL : sp->frp->name);

-	/* Switch... */
+	/*
+	 * Switch...
+	 *
+	 * !!!
+	 * Note, because the EXF structure is examine at interrupt time,
+	 * the underlying DB structures have to be consistent as soon as
+	 * it's assigned to an SCR structure.
+	 */
 	++ep->refcnt;
 	sp->ep = ep;
 	sp->frp = frp;
--- a/usr.bin/vi/common/line.c
+++ b/usr.bin/vi/common/line.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)line.c	8.30 (Berkeley) 6/30/94";
+static const char sccsid[] = "@(#)line.c	8.31 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/log.c
+++ b/usr.bin/vi/common/log.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)log.c	8.16 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)log.c	8.17 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/main.c
+++ b/usr.bin/vi/common/main.c
@ -32,13 +32,13 @@
 */

 #ifndef lint
-static char copyright[] =
+static const char copyright[] =
 "@(#) Copyright (c) 1992, 1993, 1994\n\
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */

 #ifndef lint
-static char sccsid[] = "@(#)main.c	8.103 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)main.c	8.105 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
@ -219,6 +219,9 @@ main(argc, argv)
 	 * tricky.  If an error is returned, we may or may not have a
 	 * screen structure.  If we have a screen structure, put it on a
 	 * display queue so that the error messages get displayed.
+	 *
+	 * !!!
+	 * Signals not on, no need to block them for queue manipulation.
 	 */
 	if (screen_init(NULL, &sp, flags)) {
 		if (sp != NULL)
@ -439,8 +442,10 @@ main(argc, argv)
 		    (void *)&__global_list->dq)
 			if ((sp = __global_list->hq.cqh_first) !=
 			    (void *)&__global_list->hq) {
+				SIGBLOCK(__global_list);
 				CIRCLEQ_REMOVE(&sp->gp->hq, sp, q);
 				CIRCLEQ_INSERT_TAIL(&sp->gp->dq, sp, q);
+				SIGUNBLOCK(__global_list);
 			} else
 				break;

@ -493,6 +498,10 @@ gs_init()
 	if (gp == NULL)
 		err(1, NULL);

+	/*
+	 * !!!
+	 * Signals not on, no need to block them for queue manipulation.
+	 */
 	CIRCLEQ_INIT(&gp->dq);
 	CIRCLEQ_INIT(&gp->hq);
 	LIST_INIT(&gp->msgq);
--- a/usr.bin/vi/common/mark.c
+++ b/usr.bin/vi/common/mark.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)mark.c	8.19 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)mark.c	8.20 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/mem.h
+++ b/usr.bin/vi/common/mem.h
@ -30,19 +30,35 @@
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
- *	@(#)mem.h	8.6 (Berkeley) 6/20/94
+ *	@(#)mem.h	8.8 (Berkeley) 8/16/94
 */

 /* Increase the size of a malloc'd buffer.  Two versions, one that
 * returns, one that jumps to an error label.
 */
 #define	BINC_GOTO(sp, lp, llen, nlen) {					\
-	if ((nlen) > llen && binc(sp, &(lp), &(llen), nlen))		\
+	void *__bincp;							\
+	if ((nlen) > llen) {						\
+		if ((__bincp = binc(sp, lp, &(llen), nlen)) == NULL)	\
 		goto binc_err;						\
+		/*							\
+		 * !!!							\
+		 * Possible pointer conversion.				\
+		 */							\
+		lp = __bincp;						\
+	}								\
 }
 #define	BINC_RET(sp, lp, llen, nlen) {					\
-	if ((nlen) > llen && binc(sp, &(lp), &(llen), nlen))		\
+	void *__bincp;							\
+	if ((nlen) > llen) {						\
+		if ((__bincp = binc(sp, lp, &(llen), nlen)) == NULL)	\
 		return (1);						\
+		/*							\
+		 * !!!							\
+		 * Possible pointer conversion.				\
+		 */							\
+		lp = __bincp;						\
+	}								\
 }

 /*
@ -175,4 +191,4 @@
 #define	MEMMOVE(p, t, len)	memmove(p, t, (len) * sizeof(*(p)))
 #define	MEMSET(p, value, len)	memset(p, value, (len) * sizeof(*(p)))

-int	binc __P((SCR *, void *, size_t *, size_t));
+void	*binc __P((SCR *, void *, size_t *, size_t));
--- a/usr.bin/vi/common/msg.c
+++ b/usr.bin/vi/common/msg.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)msg.c	8.9 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)msg.c	8.11 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -222,7 +222,8 @@ msg_app(gp, sp, inv_video, p, len)
 	}

 	/* Get enough memory for the message. */
-store:	if (len > mp->blen && binc(sp, &mp->mbuf, &mp->blen, len))
+store:	if (len > mp->blen &&
+	    (mp->mbuf = binc(sp, mp->mbuf, &mp->blen, len)) == NULL)
 		goto ret;

 	/* Store the message. */
--- a/usr.bin/vi/common/options.c
+++ b/usr.bin/vi/common/options.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)options.c	8.64 (Berkeley) 7/27/94";
+static const char sccsid[] = "@(#)options.c	8.65 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/options_f.c
+++ b/usr.bin/vi/common/options_f.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)options_f.c	8.34 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)options_f.c	8.35 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/put.c
+++ b/usr.bin/vi/common/put.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)put.c	8.9 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)put.c	8.10 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/recover.c
+++ b/usr.bin/vi/common/recover.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)recover.c	8.72 (Berkeley) 7/21/94";
+static const char sccsid[] = "@(#)recover.c	8.73 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
--- a/usr.bin/vi/common/screen.c
+++ b/usr.bin/vi/common/screen.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)screen.c	8.64 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)screen.c	8.66 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -300,7 +300,9 @@ screen_end(sp)
 	}

 	/* Remove the screen from the displayed queue. */
+	SIGBLOCK(sp->gp);
 	CIRCLEQ_REMOVE(&sp->gp->dq, sp, q);
+	SIGUNBLOCK(sp->gp);

 	/* Free the screen itself. */
 	FREE(sp, sizeof(SCR));
--- a/usr.bin/vi/common/search.c
+++ b/usr.bin/vi/common/search.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)search.c	8.46 (Berkeley) 7/2/94";
+static const char sccsid[] = "@(#)search.c	8.47 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/seq.c
+++ b/usr.bin/vi/common/seq.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)seq.c	8.30 (Berkeley) 7/15/94";
+static const char sccsid[] = "@(#)seq.c	8.32 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -63,13 +63,13 @@ static char sccsid[] = "@(#)seq.c	8.30 (Berkeley) 7/15/94";
 int
 seq_set(sp, name, nlen, input, ilen, output, olen, stype, flags)
 	SCR *sp;
-	char *name, *input, *output;
+	CHAR_T *name, *input, *output;
 	size_t nlen, ilen, olen;
 	enum seqtype stype;
 	int flags;
 {
-	SEQ *lastqp, *qp;
 	CHAR_T *p;
+	SEQ *lastqp, *qp;
 	int sv_errno;

 	/*
@ -145,6 +145,7 @@ mem1:		errno = sv_errno;
 	}

 	/* Set the fast lookup bit. */
+	if (qp->input[0] < MAX_BIT_SEQ)
 	bit_set(sp->gp->seqb, qp->input[0]);

 	return (0);
@ -157,7 +158,7 @@ mem1:		errno = sv_errno;
 int
 seq_delete(sp, input, ilen, stype)
 	SCR *sp;
-	char *input;
+	CHAR_T *input;
 	size_t ilen;
 	enum seqtype stype;
 {
@ -195,7 +196,7 @@ SEQ *
 seq_find(sp, lastqp, input, ilen, stype, ispartialp)
 	SCR *sp;
 	SEQ **lastqp;
-	char *input;
+	CHAR_T *input;
 	size_t ilen;
 	enum seqtype stype;
 	int *ispartialp;
@ -268,9 +269,9 @@ seq_dump(sp, stype, isname)
 	enum seqtype stype;
 	int isname;
 {
+	CHAR_T *p;
 	SEQ *qp;
 	int cnt, len, olen;
-	CHAR_T *p;

 	cnt = 0;
 	for (qp = sp->gp->seqq.lh_first; qp != NULL; qp = qp->q.le_next) {
@ -315,10 +316,10 @@ seq_save(sp, fp, prefix, stype)
 	char *prefix;
 	enum seqtype stype;
 {
+	CHAR_T *p;
 	SEQ *qp;
 	size_t olen;
 	int ch;
-	char *p;

 	/* Write a sequence command for all keys the user defined. */
 	for (qp = sp->gp->seqq.lh_first; qp != NULL; qp = qp->q.le_next) {
--- a/usr.bin/vi/common/seq.h
+++ b/usr.bin/vi/common/seq.h
@ -30,7 +30,7 @@
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
- *	@(#)seq.h	8.11 (Berkeley) 7/17/94
+ *	@(#)seq.h	8.12 (Berkeley) 8/16/94
 */

 /*
@ -56,11 +56,11 @@ enum seqtype { SEQ_ABBREV, SEQ_COMMAND, SEQ_INPUT };
 struct _seq {
 	LIST_ENTRY(_seq) q;		/* Linked list of all sequences. */
 	enum seqtype stype;		/* Sequence type. */
-	char	*name;			/* Sequence name (if any). */
+	CHAR_T	*name;			/* Sequence name (if any). */
 	size_t	 nlen;			/* Name length. */
-	char	*input;			/* Sequence input keys. */
+	CHAR_T	*input;			/* Sequence input keys. */
 	size_t	 ilen;			/* Input keys length. */
-	char	*output;		/* Sequence output keys. */
+	CHAR_T	*output;		/* Sequence output keys. */
 	size_t	 olen;			/* Output keys length. */

 #define	SEQ_FUNCMAP	0x01		/* If unresolved function key.*/
@ -69,11 +69,11 @@ struct _seq {
 	u_int8_t flags;
 };

-int	 seq_delete __P((SCR *, char *, size_t, enum seqtype));
+int	 seq_delete __P((SCR *, CHAR_T *, size_t, enum seqtype));
 int	 seq_dump __P((SCR *, enum seqtype, int));
-SEQ	*seq_find __P((SCR *, SEQ **, char *, size_t, enum seqtype, int *));
+SEQ	*seq_find __P((SCR *, SEQ **, CHAR_T *, size_t, enum seqtype, int *));
 void	 seq_init __P((SCR *));
 int	 seq_mdel __P((SEQ *));
 int	 seq_save __P((SCR *, FILE *, char *, enum seqtype));
-int	 seq_set __P((SCR *, char *, size_t,
-	    char *, size_t, char *, size_t, enum seqtype, int));
+int	 seq_set __P((SCR *, CHAR_T *, size_t,
+	    CHAR_T *, size_t, CHAR_T *, size_t, enum seqtype, int));
--- a/usr.bin/vi/common/signal.c
+++ b/usr.bin/vi/common/signal.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)signal.c	8.32 (Berkeley) 7/23/94";
+static const char sccsid[] = "@(#)signal.c	8.33 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/queue.h>
--- a/usr.bin/vi/common/term.c
+++ b/usr.bin/vi/common/term.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)term.c	8.79 (Berkeley) 8/2/94";
+static const char sccsid[] = "@(#)term.c	8.80 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/common/util.c
+++ b/usr.bin/vi/common/util.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)util.c	8.71 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)util.c	8.73 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -59,40 +59,38 @@ static char sccsid[] = "@(#)util.c	8.71 (Berkeley) 8/8/94";
 * binc --
 *	Increase the size of a buffer.
 */
-int
-binc(sp, argp, bsizep, min)
+void *
+binc(sp, bp, bsizep, min)
 	SCR *sp;			/* sp MAY BE NULL!!! */
-	void *argp;
+	void *bp;
 	size_t *bsizep, min;
 {
 	size_t csize;
-	void *bpp;

 	/* If already larger than the minimum, just return. */
 	if (min && *bsizep >= min)
-		return (0);
+		return (bp);

-	bpp = *(char **)argp;
 	csize = *bsizep + MAX(min, 256);
-	REALLOC(sp, bpp, void *, csize);
+	REALLOC(sp, bp, void *, csize);

-	if (bpp == NULL) {
+	if (bp == NULL) {
 		/*
 		 * Theoretically, realloc is supposed to leave any already
 		 * held memory alone if it can't get more.  Don't trust it.
 		 */
 		*bsizep = 0;
-		return (1);
+		return (NULL);
 	}
 	/*
 	 * Memory is guaranteed to be zero-filled, various parts of
 	 * nvi depend on this.
 	 */
-	memset((char *)bpp + *bsizep, 0, csize - *bsizep);
-	*(char **)argp = bpp;
+	memset((char *)bp + *bsizep, 0, csize - *bsizep);
 	*bsizep = csize;
-	return (0);
+	return (bp);
 }
+
 /*
 * nonblank --
 *	Set the column number of the first non-blank character
--- a/usr.bin/vi/docs/README
+++ b/usr.bin/vi/docs/README
@ -1,8 +1,8 @@
-#	@(#)README	8.84 (Berkeley) 8/15/94
+#	@(#)README	8.85 (Berkeley) 8/17/94

-This is the README for version 1.32 of nex/nvi, a freely redistributable
+This is the README for version 1.33 of nex/nvi, a freely redistributable
 replacement for the Berkeley ex and vi text editors.  The compressed or
-gzip'd archive, for this and future versions, can be retrieved by using
+gzip'd archives for this and future versions, can be retrieved by using
 anonymous ftp to ftp.cs.berkeley.edu, from the file ucb/4bsd/nvi.tar.Z,
 or ucb/4bsd/nvi.tar.gz.

--- a/usr.bin/vi/docs/bugs.current
+++ b/usr.bin/vi/docs/bugs.current
@ -6,9 +6,6 @@ List of known bugs:
 + The option sidescroll is completely wrong, and setting it does more
  harm than good.

-+ We're not blocking signals when manipulating the SCR/EXF chains.
-  This is necessary, since we walk them on signal receipt.
-
 + When nvi edits files that don't have trailing newlines, it appends
  one, regardless.

--- a/usr.bin/vi/docs/changelog
+++ b/usr.bin/vi/docs/changelog
@ -1,3 +1,10 @@
+1.32 -> 1.33 Wed Aug 17 09:31:41 1994 (PUBLICLY AVAILABLE VERSION)
+	+ Get back 5K of data space for the sccsid strings.
+	+ Fix bug where cG fix in version 1.31 broke cw cursor positioning
+	  when the change command extended the line.
+	+ Fix core dump in map/seq code if character larger than 7 bits.
+	+ Block signals when manipulating the SCR chains.
+	+ Fix memory allocation for machines with multiple pointer sizes.
 1.31 -> 1.32 Mon Aug 15 14:27:49 1994
 	+ Turn off recno mmap call for Solaris 2.4/SunOS 5.4.
 1.30 -> 1.31 Sun Aug 14 13:13:35 1994
--- a/usr.bin/vi/docs/features
+++ b/usr.bin/vi/docs/features
@ -1,21 +1,18 @@
-List of things that should be added at some point:
+List of things that should be added:
 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

-+ X11 interface.
-
+ X11 (Tk, Motif, Xaw) interface.
+ Interpreted language (Perl5, Scheme, Tcl)
+ Ports: Windows, Windows NT, MSDOS
 + Message catalogs.
-
 + Forms editing package; use RE's to verify field contents.
-
 + Internationalization, including wide character support.
+ Support for single line window editing, including full editing
+  capability on the vi colon command line.
+ Rob Pike's sam style RE's.

-+ Make db, curses real libraries that we load against instead of
-  compiling directly.
-
-+ Full editing capability on the : command line.
-
-+ Rob Pike's sam RE's.
-
+List of suggested features:
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 + Filename completion.  While on the subject of completion, it would be
  nice to have the completion mechanism found in tcsh version >= 6.03.
  For instance, the completion for the `:cd' command will be directories
@ -23,8 +20,6 @@ List of things that should be added at some point:
  set at that moment, and for `:set un' will be all options that are set
  at that moment.  The completion for `:< count' will be the flags.

-List of suggested features:
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 + Add a "push" command that would push a file on the tags stack.
  (Essentially make tags a special case of the stack, and make
  the stack more general purpose.)
--- a/usr.bin/vi/docs/internals/gdb.script
+++ b/usr.bin/vi/docs/internals/gdb.script
@ -1,4 +1,4 @@
-#	@(#)gdb.script	8.2 (Berkeley) 9/29/93
+#	@(#)gdb.script	8.3 (Berkeley) 8/16/94

 # display the SVI screen map
 # usage dmap(sp)
@ -39,10 +39,19 @@ define	tmap
 	end
 end

-# display the SVI private structure
+# display the private structures
+define	vip
+	print *((VI_PRIVATE *)sp->vi_private)
+end
 define	svp
 	print *((SVI_PRIVATE *)sp->svi_private)
 end
+define	exp
+	print *((EX_PRIVATE *)sp->ex_private)
+end
+define	sxp
+	print *((SEX_PRIVATE *)sp->sex_private)
+end

 # display the marks
 define	markp
--- a/usr.bin/vi/ex/ex.c
+++ b/usr.bin/vi/ex/ex.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex.c	8.155 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)ex.c	8.156 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_abbrev.c
+++ b/usr.bin/vi/ex/ex_abbrev.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_abbrev.c	8.12 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)ex_abbrev.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_append.c
+++ b/usr.bin/vi/ex/ex_append.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_append.c	8.22 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)ex_append.c	8.23 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_args.c
+++ b/usr.bin/vi/ex/ex_args.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_args.c	8.27 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_args.c	8.28 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_argv.c
+++ b/usr.bin/vi/ex/ex_argv.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_argv.c	8.36 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_argv.c	8.37 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_at.c
+++ b/usr.bin/vi/ex/ex_at.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_at.c	8.25 (Berkeley) 8/1/94";
+static const char sccsid[] = "@(#)ex_at.c	8.26 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_bang.c
+++ b/usr.bin/vi/ex/ex_bang.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_bang.c	8.33 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)ex_bang.c	8.34 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_cd.c
+++ b/usr.bin/vi/ex/ex_cd.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_cd.c	8.16 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)ex_cd.c	8.17 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
--- a/usr.bin/vi/ex/ex_delete.c
+++ b/usr.bin/vi/ex/ex_delete.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_delete.c	8.12 (Berkeley) 8/5/94";
+static const char sccsid[] = "@(#)ex_delete.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_digraph.c
+++ b/usr.bin/vi/ex/ex_digraph.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_digraph.c	8.6 (Berkeley) 3/25/94";
+static const char sccsid[] = "@(#)ex_digraph.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #ifndef NO_DIGRAPH
--- a/usr.bin/vi/ex/ex_display.c
+++ b/usr.bin/vi/ex/ex_display.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_display.c	8.21 (Berkeley) 8/3/94";
+static const char sccsid[] = "@(#)ex_display.c	8.22 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_edit.c
+++ b/usr.bin/vi/ex/ex_edit.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_edit.c	8.18 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_edit.c	8.19 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_equal.c
+++ b/usr.bin/vi/ex/ex_equal.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_equal.c	8.6 (Berkeley) 4/26/94";
+static const char sccsid[] = "@(#)ex_equal.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_exit.c
+++ b/usr.bin/vi/ex/ex_exit.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_exit.c	8.13 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_exit.c	8.14 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_file.c
+++ b/usr.bin/vi/ex/ex_file.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_file.c	8.10 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)ex_file.c	8.11 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_global.c
+++ b/usr.bin/vi/ex/ex_global.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_global.c	8.41 (Berkeley) 8/9/94";
+static const char sccsid[] = "@(#)ex_global.c	8.42 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_init.c
+++ b/usr.bin/vi/ex/ex_init.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_init.c	8.16 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)ex_init.c	8.17 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_join.c
+++ b/usr.bin/vi/ex/ex_join.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_join.c	8.12 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)ex_join.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_map.c
+++ b/usr.bin/vi/ex/ex_map.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_map.c	8.17 (Berkeley) 7/16/94";
+static const char sccsid[] = "@(#)ex_map.c	8.18 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_mark.c
+++ b/usr.bin/vi/ex/ex_mark.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_mark.c	8.6 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)ex_mark.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_mkexrc.c
+++ b/usr.bin/vi/ex/ex_mkexrc.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_mkexrc.c	8.12 (Berkeley) 7/15/94";
+static const char sccsid[] = "@(#)ex_mkexrc.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_move.c
+++ b/usr.bin/vi/ex/ex_move.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_move.c	8.17 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)ex_move.c	8.18 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_open.c
+++ b/usr.bin/vi/ex/ex_open.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_open.c	8.4 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)ex_open.c	8.5 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_preserve.c
+++ b/usr.bin/vi/ex/ex_preserve.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_preserve.c	8.12 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_preserve.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_print.c
+++ b/usr.bin/vi/ex/ex_print.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_print.c	8.14 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)ex_print.c	8.15 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_put.c
+++ b/usr.bin/vi/ex/ex_put.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_put.c	8.6 (Berkeley) 7/23/94";
+static const char sccsid[] = "@(#)ex_put.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_read.c
+++ b/usr.bin/vi/ex/ex_read.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_read.c	8.39 (Berkeley) 8/9/94";
+static const char sccsid[] = "@(#)ex_read.c	8.40 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_screen.c
+++ b/usr.bin/vi/ex/ex_screen.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_screen.c	8.13 (Berkeley) 6/27/94";
+static const char sccsid[] = "@(#)ex_screen.c	8.14 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_script.c
+++ b/usr.bin/vi/ex/ex_script.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_script.c	8.17 (Berkeley) 7/23/94";
+static const char sccsid[] = "@(#)ex_script.c	8.18 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_set.c
+++ b/usr.bin/vi/ex/ex_set.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_set.c	8.4 (Berkeley) 7/22/94";
+static const char sccsid[] = "@(#)ex_set.c	8.5 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_shell.c
+++ b/usr.bin/vi/ex/ex_shell.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_shell.c	8.24 (Berkeley) 8/5/94";
+static const char sccsid[] = "@(#)ex_shell.c	8.25 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
--- a/usr.bin/vi/ex/ex_shift.c
+++ b/usr.bin/vi/ex/ex_shift.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_shift.c	8.14 (Berkeley) 3/14/94";
+static const char sccsid[] = "@(#)ex_shift.c	8.15 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_source.c
+++ b/usr.bin/vi/ex/ex_source.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_source.c	8.5 (Berkeley) 8/8/94";
+static const char sccsid[] = "@(#)ex_source.c	8.6 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_stop.c
+++ b/usr.bin/vi/ex/ex_stop.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_stop.c	8.7 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)ex_stop.c	8.8 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_subst.c
+++ b/usr.bin/vi/ex/ex_subst.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_subst.c	8.57 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)ex_subst.c	8.58 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_tag.c
+++ b/usr.bin/vi/ex/ex_tag.c
@ -35,7 +35,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_tag.c	8.43 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_tag.c	8.44 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/param.h>
--- a/usr.bin/vi/ex/ex_undo.c
+++ b/usr.bin/vi/ex/ex_undo.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_undo.c	8.7 (Berkeley) 8/9/94";
+static const char sccsid[] = "@(#)ex_undo.c	8.8 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_usage.c
+++ b/usr.bin/vi/ex/ex_usage.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_usage.c	8.19 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)ex_usage.c	8.20 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_util.c
+++ b/usr.bin/vi/ex/ex_util.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_util.c	8.12 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_util.c	8.13 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_version.c
+++ b/usr.bin/vi/ex/ex_version.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_version.c	8.62 (Berkeley) 8/15/94";
+static const char sccsid[] = "@(#)ex_version.c	8.64 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -62,10 +62,10 @@ ex_version(sp, ep, cmdp)
 	EXF *ep;
 	EXCMDARG *cmdp;
 {
-	static time_t then = 776975285;
+	static const time_t then = 777130317;

 	(void)ex_printf(EXCOOKIE,
-"Version 1.32, %sThe CSRG, University of California, Berkeley.\n",
+"Version 1.33, %sThe CSRG, University of California, Berkeley.\n",
 	    ctime(&then));
 	return (0);
 }
--- a/usr.bin/vi/ex/ex_visual.c
+++ b/usr.bin/vi/ex/ex_visual.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_visual.c	8.13 (Berkeley) 7/18/94";
+static const char sccsid[] = "@(#)ex_visual.c	8.14 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_write.c
+++ b/usr.bin/vi/ex/ex_write.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_write.c	8.36 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)ex_write.c	8.37 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_yank.c
+++ b/usr.bin/vi/ex/ex_yank.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_yank.c	8.5 (Berkeley) 5/17/94";
+static const char sccsid[] = "@(#)ex_yank.c	8.6 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/ex_z.c
+++ b/usr.bin/vi/ex/ex_z.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)ex_z.c	8.6 (Berkeley) 7/23/94";
+static const char sccsid[] = "@(#)ex_z.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/excmd.c
+++ b/usr.bin/vi/ex/excmd.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)excmd.c	8.58 (Berkeley) 8/9/94";
+static const char sccsid[] = "@(#)excmd.c	8.59 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/ex/filter.c
+++ b/usr.bin/vi/ex/filter.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)filter.c	8.43 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)filter.c	8.44 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/install/recover.script
+++ b/usr.bin/vi/install/recover.script
@ -1,29 +1,43 @@
-#	@(#)recover.script	8.4 (Berkeley) 8/13/94
+#	@(#)recover.script	8.7 (Berkeley) 8/16/94
+#
+# Script to recover nvi edit sessions.
 #
-# Recover nvi editor files:
 RECDIR=/var/tmp/vi.recover
 SENDMAIL=/usr/lib/sendmail
 echo 'Recovering nvi editor sessions.'

-# Unmodified nvi editor backup files are either zero length or
-# have the execute bit set.  Delete both cases.
+# Check editor backup files.
 vibackup=`echo $RECDIR/vi.*`
 if [ "$vibackup" != "$RECDIR/vi.*" ]; then
 	for i in $vibackup; do
+		# Only test files that are readable.
+		if test ! -r $i; then
+			continue
+		fi
+
+		# Unmodified nvi editor backup files either have the
+		# execute bit set or are zero length.  Delete them.
 		if test -x $i -o ! -s $i; then
 			rm $i
 		fi
 	done
 fi

-# It is possible to get incomplete recovery files, if the editor
-# crashes at the right time.  Delete any recovery files without
-# corresponding backup files, otherwise send mail to the user.
+# It is possible to get incomplete recovery files, if the editor crashes
+# at the right time.
 virecovery=`echo $RECDIR/recover.*`
 if [ "$virecovery" != "$RECDIR/recover.*" ]; then
 	for i in $virecovery; do
+		# Only test files that are readable.
+		if test ! -r $i; then
+			continue
+		fi
+
+		# Delete any recovery files that are zero length, corrupted,
+		# or that have no corresponding backup file.  Else send mail
+		# to the user.
 		recfile=`awk '/^X-vi-recover-path:/{print $2}' < $i`
-		if test ! -n $recfile -a -s $recfile; then
+		if test -n "$recfile" -a -s "$recfile"; then
 			$SENDMAIL -t < $i
 		else
 			rm $i
--- a/usr.bin/vi/sex/sex_confirm.c
+++ b/usr.bin/vi/sex/sex_confirm.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_confirm.c	8.7 (Berkeley) 4/13/94";
+static const char sccsid[] = "@(#)sex_confirm.c	8.8 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_get.c
+++ b/usr.bin/vi/sex/sex_get.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_get.c	8.37 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)sex_get.c	8.38 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_refresh.c
+++ b/usr.bin/vi/sex/sex_refresh.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_refresh.c	8.14 (Berkeley) 7/15/94";
+static const char sccsid[] = "@(#)sex_refresh.c	8.15 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_screen.c
+++ b/usr.bin/vi/sex/sex_screen.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_screen.c	8.47 (Berkeley) 7/21/94";
+static const char sccsid[] = "@(#)sex_screen.c	8.48 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_term.c
+++ b/usr.bin/vi/sex/sex_term.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_term.c	8.38 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)sex_term.c	8.39 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_util.c
+++ b/usr.bin/vi/sex/sex_util.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_util.c	8.15 (Berkeley) 7/16/94";
+static const char sccsid[] = "@(#)sex_util.c	8.16 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/sex/sex_window.c
+++ b/usr.bin/vi/sex/sex_window.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)sex_window.c	8.6 (Berkeley) 8/4/94";
+static const char sccsid[] = "@(#)sex_window.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_confirm.c
+++ b/usr.bin/vi/svi/svi_confirm.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_confirm.c	8.8 (Berkeley) 4/13/94";
+static const char sccsid[] = "@(#)svi_confirm.c	8.9 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_curses.c
+++ b/usr.bin/vi/svi/svi_curses.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_curses.c	8.3 (Berkeley) 8/7/94";
+static const char sccsid[] = "@(#)svi_curses.c	8.4 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_ex.c
+++ b/usr.bin/vi/svi/svi_ex.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_ex.c	8.54 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_ex.c	8.55 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_get.c
+++ b/usr.bin/vi/svi/svi_get.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_get.c	8.25 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_get.c	8.26 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_line.c
+++ b/usr.bin/vi/svi/svi_line.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_line.c	8.25 (Berkeley) 5/16/94";
+static const char sccsid[] = "@(#)svi_line.c	8.26 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_refresh.c
+++ b/usr.bin/vi/svi/svi_refresh.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_refresh.c	8.60 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_refresh.c	8.61 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_relative.c
+++ b/usr.bin/vi/svi/svi_relative.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_relative.c	8.16 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)svi_relative.c	8.17 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_screen.c
+++ b/usr.bin/vi/svi/svi_screen.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_screen.c	8.91 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_screen.c	8.93 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -320,11 +320,15 @@ svi_dtoh(sp, emsg)
 			FREE(_HMAP(tsp), SIZE_HMAP(tsp) * sizeof(SMAP));
 			_HMAP(tsp) = NULL;
 		}
+		SIGBLOCK(sp->gp);
 		CIRCLEQ_REMOVE(&sp->gp->dq, tsp, q);
 		CIRCLEQ_INSERT_TAIL(&sp->gp->hq, tsp, q);
+		SIGUNBLOCK(sp->gp);
 	}
+	SIGBLOCK(sp->gp);
 	CIRCLEQ_REMOVE(&sp->gp->hq, sp, q);
 	CIRCLEQ_INSERT_TAIL(&sp->gp->dq, sp, q);
+	SIGUNBLOCK(sp->gp);
 	if (hidden > 1)
 		msgq(sp, M_INFO,
 	    "%s backgrounded %d screens; use :display to list the screens",
--- a/usr.bin/vi/svi/svi_smap.c
+++ b/usr.bin/vi/svi/svi_smap.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_smap.c	8.46 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_smap.c	8.47 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_split.c
+++ b/usr.bin/vi/svi/svi_split.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_split.c	8.46 (Berkeley) 8/9/94";
+static const char sccsid[] = "@(#)svi_split.c	8.48 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
@ -256,6 +256,7 @@ svi_split(sp, argv, argc)
 	}

 	/* Everything's initialized, put the screen on the displayed queue.*/
+	SIGBLOCK(sp->gp);
 	if (splitup) {
 		/* Link in before the parent. */
 		CIRCLEQ_INSERT_BEFORE(&sp->gp->dq, sp, tsp, q);
@ -263,6 +264,7 @@ svi_split(sp, argv, argc)
 		/* Link in after the parent. */
 		CIRCLEQ_INSERT_AFTER(&sp->gp->dq, sp, tsp, q);
 	}
+	SIGUNBLOCK(sp->gp);

 	/* Clear the current information lines in both screens. */
 	MOVE(sp, INFOLINE(sp), 0);
@ -333,8 +335,10 @@ svi_bg(csp)
 	}

 	/* Move the old screen to the hidden queue. */
+	SIGBLOCK(csp->gp);
 	CIRCLEQ_REMOVE(&csp->gp->dq, csp, q);
 	CIRCLEQ_INSERT_TAIL(&csp->gp->hq, csp, q);
+	SIGUNBLOCK(csp->gp);

 	/* Switch screens. */
 	csp->nextdisp = sp;
@ -428,8 +432,10 @@ svi_fg(csp, name)
 	}

 	/* Move the old screen to the hidden queue. */
+	SIGBLOCK(csp->gp);
 	CIRCLEQ_REMOVE(&csp->gp->dq, csp, q);
 	CIRCLEQ_INSERT_TAIL(&csp->gp->hq, csp, q);
+	SIGUNBLOCK(csp->gp);

 	return (0);
 }
@ -527,8 +533,10 @@ svi_swap(csp, nsp, name)
 	 * the exit will delete the old one, if we're foregrounding, the fg
 	 * code will move the old one to the hidden queue.
 	 */
+	SIGBLOCK(sp->gp);
 	CIRCLEQ_REMOVE(&sp->gp->hq, sp, q);
 	CIRCLEQ_INSERT_AFTER(&csp->gp->dq, csp, sp, q);
+	SIGUNBLOCK(sp->gp);

 	F_SET(sp, S_REDRAW);
 	return (0);
--- a/usr.bin/vi/svi/svi_term.c
+++ b/usr.bin/vi/svi/svi_term.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_term.c	8.5 (Berkeley) 8/14/94";
+static const char sccsid[] = "@(#)svi_term.c	8.6 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/svi/svi_util.c
+++ b/usr.bin/vi/svi/svi_util.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)svi_util.c	8.53 (Berkeley) 8/12/94";
+static const char sccsid[] = "@(#)svi_util.c	8.54 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/types.h>
--- a/usr.bin/vi/xaw/xaw_screen.c
+++ b/usr.bin/vi/xaw/xaw_screen.c
@ -32,7 +32,7 @@
 */

 #ifndef lint
-static char sccsid[] = "@(#)xaw_screen.c	8.6 (Berkeley) 5/21/94";
+static const char sccsid[] = "@(#)xaw_screen.c	8.7 (Berkeley) 8/17/94";
 #endif /* not lint */

 #include <sys/queue.h>