freebsd-dev/contrib/global/nvi-1.34.diff

diff -c -r -N /usr/src/usr.bin/vi/USD.doc/vi.man/vi.1 ./USD.doc/vi.man/vi.1
*** /usr/src/usr.bin/vi/USD.doc/vi.man/vi.1	Wed Aug 17 08:36:39 1994
--- ./USD.doc/vi.man/vi.1	Sat Dec 14 11:54:14 1996
***************
*** 39,59 ****
  .Nd text editors
  .Sh SYNOPSIS
  .Nm \&ex
! .Op Fl eFRrsv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
  .\".Op Fl X Ar \&aw
  .Op Ar "file ..."
  .Nm \&vi
! .Op Fl eFRrv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
  .\".Op Fl X Ar \&aw
  .Op Ar "file ..."
  .Nm view
! .Op Fl eFRrv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
--- 39,59 ----
  .Nd text editors
  .Sh SYNOPSIS
  .Nm \&ex
! .Op Fl eFGRrsv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
  .\".Op Fl X Ar \&aw
  .Op Ar "file ..."
  .Nm \&vi
! .Op Fl eFGRrv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
  .\".Op Fl X Ar \&aw
  .Op Ar "file ..."
  .Nm view
! .Op Fl eFGRrv
  .Op Fl c Ar cmd
  .Op Fl t Ar tag
  .Op Fl w Ar size
***************
*** 124,129 ****
--- 124,131 ----
  Don't copy the entire file when first starting to edit.
  (The default is to make a copy in case someone else modifies
  the file during your edit session.)
+ .It Fl G
+ Start editing in gtags mode, as if the gtagsmode option was set.
  .It Fl R
  Start editing in read-only mode, as if the command name was
  .Nm view ,
***************
*** 377,382 ****
--- 379,385 ----
  Move the cursor down
  .Li count
  lines to the first nonblank character of that line.
+ In gtags select mode, <control-M> select current line as a tag.
  .It Sy "[count] <control-P>"
  .It Sy "[count] k"
  Move the cursor up
***************
*** 402,408 ****
  .Nm \&ex
  commands or cancel partial commands.
  .It Sy "<control-]>"
! Push a tag reference onto the tag stack.
  .It Sy "<control-^>"
  Switch to the most recently edited file.
  .It Sy "[count] <space>"
--- 405,412 ----
  .Nm \&ex
  commands or cancel partial commands.
  .It Sy "<control-]>"
! Push a tag reference onto the tag stack. In gtagsmode, if at the first column
! of line, locate function references otherwise function definitions.
  .It Sy "<control-^>"
  Switch to the most recently edited file.
  .It Sy "[count] <space>"
***************
*** 780,785 ****
--- 784,793 ----
  Grow or shrink the current screen.
  .It Sy "rew[ind][!]"
  Rewind the argument list.
+ .It Sy "rta[g][!] tagstring"
+ Edit the file refering the specified tag. (Only in gtagsmode)
+ .It Sy "se[lect]"
+ Select a tag from gtags list.
  .It Sy "se[t] [option[=[value]] ...] [nooption ...] [option? ...] [all]"
  Display or set editor options.
  .It Sy "sh[ell]"
***************
*** 901,906 ****
--- 909,916 ----
  style) expressions.
  .It Sy "flash [on]"
  Flash the screen instead of beeping the keyboard on error.
+ .It Sy "gtagsmode, gt [off]"
+ Use GTAGS and GRTAGS instead of tags.
  .It Sy "hardtabs, ht [8]"
  Set the spacing between hardware tab settings.
  .It Sy "ignorecase, ic [off]"
diff -c -r -N /usr/src/usr.bin/vi/common/Makefile ./common/Makefile
*** /usr/src/usr.bin/vi/common/Makefile	Mon Sep 12 07:01:45 1994
--- ./common/Makefile	Sat Dec 14 11:55:27 1996
***************
*** 9,15 ****
  LINKS+= ${BINDIR}/${VI} ${BINDIR}/view
  MAN1=	${.CURDIR}/../USD.doc/vi.man/vi.1
  
! CFLAGS+=-I. -I${.CURDIR}
  DPADD+= ${LIBCURSES} ${LIBTERMCAP} ${LIBUTIL}
  LDADD+=	-lcurses -ltermcap -lutil
  
--- 9,15 ----
  LINKS+= ${BINDIR}/${VI} ${BINDIR}/view
  MAN1=	${.CURDIR}/../USD.doc/vi.man/vi.1
  
! CFLAGS+=-I. -I${.CURDIR} -DGTAGS
  DPADD+= ${LIBCURSES} ${LIBTERMCAP} ${LIBUTIL}
  LDADD+=	-lcurses -ltermcap -lutil
  
diff -c -r -N /usr/src/usr.bin/vi/common/exf.c ./common/exf.c
*** /usr/src/usr.bin/vi/common/exf.c	Tue May 30 15:35:44 1995
--- ./common/exf.c	Sat Dec 14 11:54:15 1996
***************
*** 156,162 ****
--- 156,169 ----
  	 * Required FRP initialization; the only flag we keep is the
  	 * cursor information.
  	 */
+ #ifdef GTAGS
+ 	/*
+ 	 * we must keep gtagstmp information too.
+ 	 */
+ 	F_CLR(frp, ~(FR_CURSORSET|FR_GTAGSTMP));
+ #else
  	F_CLR(frp, ~FR_CURSORSET);
+ #endif
  
  	/*
  	 * Required EXF initialization:
***************
*** 290,295 ****
--- 297,305 ----
  	 * an error.
  	 */
  	if (rcv_name == NULL)
+ #ifdef GTAGS
+ 	if (!F_ISSET(frp, FR_GTAGSTMP))
+ #endif
  		switch (file_lock(oname,
  		    &ep->fcntl_fd, ep->db->fd(ep->db), 0)) {
  		case LOCK_FAILED:
diff -c -r -N /usr/src/usr.bin/vi/common/gs.h ./common/gs.h
*** /usr/src/usr.bin/vi/common/gs.h	Wed Aug 17 08:36:42 1994
--- ./common/gs.h	Sat Dec 14 11:54:15 1996
***************
*** 48,53 ****
--- 48,56 ----
  
  	sigset_t blockset;		/* Signal mask. */
  
+ #ifdef GTAGS
+ 	char	*gtagstmp;		/* gtagstmp made by -t option */
+ #endif
  #ifdef DEBUG
  	FILE	*tracefp;		/* Trace file pointer. */
  #endif
diff -c -r -N /usr/src/usr.bin/vi/common/main.c ./common/main.c
*** /usr/src/usr.bin/vi/common/main.c	Tue May 30 15:35:45 1995
--- ./common/main.c	Sat Dec 14 11:54:15 1996
***************
*** 98,103 ****
--- 98,106 ----
  	SCR *sp;
  	u_int flags, saved_vi_mode;
  	int ch, eval, flagchk, readonly, silent, snapshot;
+ #ifdef GTAGS
+ 	int gtags = 0;
+ #endif
  	char *excmdarg, *myname, *p, *tag_f, *trace_f, *wsizearg;
  	char path[MAXPATHLEN];
  
***************
*** 134,140 ****
--- 137,147 ----
  	excmdarg = tag_f = trace_f = wsizearg = NULL;
  	silent = 0;
  	snapshot = 1;
+ #ifdef GTAGS
+ 	while ((ch = getopt(argc, argv, "c:eFGRrsT:t:vw:X:")) != EOF)
+ #else
  	while ((ch = getopt(argc, argv, "c:eFRrsT:t:vw:X:")) != EOF)
+ #endif
  		switch (ch) {
  		case 'c':		/* Run the command. */
  			excmdarg = optarg;
***************
*** 146,151 ****
--- 153,163 ----
  		case 'F':		/* No snapshot. */
  			snapshot = 0;
  			break;
+ #ifdef GTAGS
+ 		case 'G':		/* gtags mode. */
+ 			gtags = 1;
+ 			break;
+ #endif
  		case 'R':		/* Readonly. */
  			readonly = 1;
  			break;
***************
*** 245,250 ****
--- 257,266 ----
  		goto err;
  	if (readonly)			/* Global read-only bit. */
  		O_SET(sp, O_READONLY);
+ #ifdef GTAGS
+ 	if (gtags)			/* Global gtags bit. */
+ 		O_SET(sp, O_GTAGSMODE);
+ #endif
  	if (silent) {			/* Ex batch mode. */
  		O_CLR(sp, O_AUTOPRINT);
  		O_CLR(sp, O_PROMPT);
***************
*** 515,520 ****
--- 531,539 ----
  	LIST_INIT(&gp->cutq);
  	LIST_INIT(&gp->seqq);
  
+ #ifdef GTAGS
+ 	gp->gtagstmp = NULL;
+ #endif
  	/* Set a flag if we're reading from the tty. */
  	if (isatty(STDIN_FILENO))
  		F_SET(gp, G_STDIN_TTY);
***************
*** 554,559 ****
--- 573,584 ----
  	SCR *sp;
  	char *tty;
  
+ #ifdef GTAGS
+ 	if (gp->gtagstmp) {
+ 		if (!strncmp(gp->gtagstmp, _PATH_GTAGSTMP, strlen(_PATH_GTAGSTMP)))
+ 			(void)unlink(gp->gtagstmp);
+ 	}
+ #endif
  	/* Default buffer storage. */
  	(void)text_lfree(&gp->dcb_store.textq);
  
diff -c -r -N /usr/src/usr.bin/vi/common/msg.c ./common/msg.c
*** /usr/src/usr.bin/vi/common/msg.c	Thu Aug 18 10:10:54 1994
--- ./common/msg.c	Sat Dec 14 11:54:15 1996
***************
*** 338,343 ****
--- 338,352 ----
  #else
  	pid = "";
  #endif
+ #ifdef GTAGS
+ 	if (F_ISSET(sp->frp, FR_GTAGSTMP)) {
+ 		if (file_lline(sp, ep, &last)) {
+ 			return (1);
+ 		}
+ 		msgq(sp, M_INFO, "[GTAGS SELECT MODE] %d lines", last);
+ 		return (0);
+ 	}
+ #endif
  	/*
  	 * See nvi/exf.c:file_init() for a description of how and
  	 * when the read-only bit is set.
diff -c -r -N /usr/src/usr.bin/vi/common/options.c ./common/options.c
*** /usr/src/usr.bin/vi/common/options.c	Tue May 30 15:35:46 1995
--- ./common/options.c	Sat Dec 14 11:54:15 1996
***************
*** 103,108 ****
--- 103,112 ----
  	{"extended",	NULL,		OPT_0BOOL,	0},
  /* O_FLASH	    HPUX */
  	{"flash",	NULL,		OPT_1BOOL,	0},
+ #ifdef GTAGS
+ /* O_GTAGSMODE	    SPECIAL */
+ 	{"gtagsmode",	NULL,		OPT_0BOOL,	0},
+ #endif
  /* O_HARDTABS	    4BSD */
  	{"hardtabs",	NULL,		OPT_NUM,	0},
  /* O_IGNORECASE	    4BSD */
***************
*** 228,233 ****
--- 232,240 ----
  	{"eb",		O_ERRORBELLS},		/*     4BSD */
  	{"ed",		O_EDCOMPATIBLE},	/*     4BSD */
  	{"ex",		O_EXRC},		/* System V (undocumented) */
+ #ifdef GTAGS
+ 	{"gt",		O_GTAGSMODE},		/* Special  */
+ #endif
  	{"ht",		O_HARDTABS},		/*     4BSD */
  	{"ic",		O_IGNORECASE},		/*     4BSD */
  	{"li",		O_LINES},		/*   4.4BSD */
diff -c -r -N /usr/src/usr.bin/vi/common/pathnames.h ./common/pathnames.h
*** /usr/src/usr.bin/vi/common/pathnames.h	Wed Aug 17 08:36:43 1994
--- ./common/pathnames.h	Sat Dec 14 11:54:15 1996
***************
*** 43,45 ****
--- 43,48 ----
  #define	_PATH_TAGS	"tags"
  #define	_PATH_TMP	"/tmp"
  #define	_PATH_TTY	"/dev/tty"
+ #ifdef GTAGS
+ #define	_PATH_GTAGSTMP	"/var/tmp/gtags"
+ #endif
diff -c -r -N /usr/src/usr.bin/vi/common/screen.h ./common/screen.h
*** /usr/src/usr.bin/vi/common/screen.h	Wed Aug 17 08:36:43 1994
--- ./common/screen.h	Sat Dec 14 11:54:15 1996
***************
*** 87,92 ****
--- 87,95 ----
  #define	FR_TMPEXIT	0x100		/* Modified temporary file, no exit. */
  #define	FR_TMPFILE	0x200		/* If file has no name. */
  #define	FR_UNLOCKED	0x400		/* File couldn't be locked. */
+ #ifdef GTAGS
+ #define	FR_GTAGSTMP	0x800		/* File is gtags temporary file. */
+ #endif
  	u_int16_t flags;
  };
  
diff -c -r -N /usr/src/usr.bin/vi/ex/ex_tag.c ./ex/ex_tag.c
*** /usr/src/usr.bin/vi/ex/ex_tag.c	Thu Aug 18 10:13:20 1994
--- ./ex/ex_tag.c	Sat Dec 14 11:54:15 1996
***************
*** 64,69 ****
--- 64,72 ----
  #include "vi.h"
  #include "excmd.h"
  #include "tag.h"
+ #ifdef GTAGS
+ #include "pathnames.h"
+ #endif
  
  static char	*binary_search __P((char *, char *, char *));
  static int	 compare __P((char *, char *, char *));
***************
*** 71,76 ****
--- 74,288 ----
  static int	 search __P((SCR *, char *, char *, char **));
  static int	 tag_get __P((SCR *, char *, char **, char **, char **));
  
+ #ifdef DEBUG
+ void
+ trace(fp)
+ 	FILE *fp;
+ {
+ 	SCR *sp;
+ 	TAG *tp;
+ 	FREF *frp;
+ 	int scr, fref, tag;
+ 
+ 	fprintf(fp, "------------------------------------\n");
+ 	scr = 0;
+ 	for (sp = __global_list->dq.cqh_first; sp != (void *)&__global_list->dq; sp = sp->q.cqe_next) {
+ 		fprintf(fp, "screen %d {\n", ++scr);
+ 		fref = 0;
+ 		for (frp = sp->frefq.cqh_first;
+ 			frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next) {
+ 			fprintf(fp, "    FREF %d ", ++fref);
+ 			if (F_ISSET(frp, FR_GTAGSTMP))
+ 				fprintf(fp, "<%s>\n", frp->name);
+ 			else
+ 				fprintf(fp, "%s\n", frp->name);
+ 		}
+ 		tag = 0;
+ 		if (!EXP(sp))
+ 			continue;
+ 		fprintf(fp, "    ................................\n");
+ 		for (tp = EXP(sp)->tagq.tqh_first; tp != NULL; tp = tp->q.tqe_next) {
+ 			fprintf(fp, "    TAG %d ", ++tag);
+ 			if (F_ISSET(tp->frp, FR_GTAGSTMP))
+ 				fprintf(fp, "<%s>\n", tp->frp->name);
+ 			else
+ 				fprintf(fp, "%s\n", tp->frp->name);
+ 		}
+ 		fprintf(fp, "}\n");
+ 	}
+ 	fprintf(fp, "------------------------------------\n");
+ }
+ #endif
+ #ifdef GTAGS
+ /*
+  * getentry --
+  *	get tag information from current line.
+  *
+  * gtags temporary file format.
+  * <tag>   <lineno>  <file>         <image>
+  *
+  * sample.
+  * +------------------------------------------------
+  * |main     30      main.c         main(argc, argv)
+  * |func     21      subr.c         func(arg)
+  */
+ static int
+ getentry(buf, tag, file, line)
+ 	char *buf, *tag, *file, *line;
+ {
+ 	char *p;
+ 
+ 	p = tag;
+ 	while (*buf && !isspace(*buf))		/* tag name */
+ 		*p++ = *buf++;
+ 	*p = 0;
+ 	while (*buf && isspace(*buf))		/* skip blanks */
+ 		buf++;
+ 	p = line;
+ 	while (*buf && !isspace(*buf))		/* line no */
+ 		*p++ = *buf++;
+ 	*p = 0;
+ 	while (*buf && isspace(*buf))		/* skip blanks */
+ 		buf++;
+ 	p = file;
+ 	while (*buf && !isspace(*buf))		/* file name */
+ 		*p++ = *buf++;
+ 	*p = 0;
+ 
+ 	/* value check */
+ 	if (strlen(tag) && strlen(line) && strlen(file) && atoi(line) > 0)
+ 		return 1;	/* OK */
+ 	return 0;		/* ERROR */
+ }
+ 
+ /*
+  * gtag_get --
+  *	Get a gtag from the GTAGS files.
+  */
+ static int
+ gtag_get(sp, ref, gtagselect, tag, tagp, filep, searchp)
+ 	SCR *sp;
+ 	int ref;
+ 	int *gtagselect;
+ 	char *tag, **tagp, **filep, **searchp;
+ {
+ 	static char name[80], file[200], line[10], gtagstmp[80];
+ 	char command[200];
+ 	char buf[BUFSIZ+1];
+ 	FILE *fp;
+ 
+ 	sprintf(gtagstmp, "%s.XXXXXXXX", _PATH_GTAGSTMP);
+ 	if (mktemp(gtagstmp) == 0) {
+ 		msgq(sp, M_ERR, "cannot generate temporary file name");
+ 		return (1);
+ 	}
+ 	sprintf(command, "global -%s '%s' > %s; chmod 600 %s",
+ 			ref ? "rx" : "x", tag, gtagstmp, gtagstmp);
+ 	if (system(command)) {
+ 		msgq(sp, M_ERR, "cannot exec global");
+ 		goto err;
+ 	}
+ 	if (!(fp = fopen(gtagstmp, "r"))) {
+ 		msgq(sp, M_ERR, "tag file cannot open.");
+ 		goto err;
+ 	}
+ 	if (!(fgets(buf, BUFSIZ, fp))) {
+ 		msgq(sp, M_ERR, "%s: tag not found", tag);
+ 		fclose(fp);
+ 		goto err;
+ 	}
+ 
+ 	if (getentry(buf, name, file, line) == 0) {
+ 		msgq(sp, M_ERR, "%s: illegal tag entry", tag);
+ 		fclose(fp);
+ 		goto err;
+ 	}
+ 
+ 	if (!(fgets(buf, BUFSIZ, fp))) {	/* just one line */
+ 		fclose(fp);
+ 		(void)unlink(gtagstmp);
+ 		*gtagselect  = 0;	/* go to user's file immediately */	
+ 		*tagp    = strdup(name);
+ 		*filep   = file;
+ 		*searchp = line;
+ 		if (*tagp == NULL) {
+ 			msgq(sp, M_SYSERR, NULL);
+ 			return (1);
+ 		}
+ 		return (0);
+ 	}
+ 	fclose(fp);
+ 	*gtagselect  = 1;		/* go to gtags select mode */
+ 	*tagp    = strdup(name);
+ 	*filep   = gtagstmp;
+ 	*searchp = "1";
+ 	if (*tagp == NULL) {
+ 		msgq(sp, M_SYSERR, NULL);
+ 		return (1);
+ 	}
+ 	return (0);
+ err:
+ 	(void)unlink(gtagstmp);
+ 	return (1);
+ }
+ 
+ /*
+  * ex_gtagselect --
+  *	The tag code can be entered from gtag select mode.
+  */
+ int
+ ex_gtagselect(sp, ep, cmdp)
+ 	SCR *sp;
+ 	EXF *ep;
+ 	EXCMDARG *cmdp;
+ {
+ 	if (!F_ISSET(sp->frp, FR_GTAGSTMP)) {
+ 		msgq(sp, M_ERR, "illegal tag entry");
+ 		return (1);
+ 	}
+ 	cmdp->cmd = &cmds[C_TAG];
+ 	cmdp->flags |= (E_GTAGSELECT|E_FORCE);
+ 	return ex_tagpush(sp, ep, cmdp);
+ }
+ 
+ /*
+  * should_delete --
+  *	1: should delete, 0: should not delete
+  */
+ int
+ should_delete(gtagstmp)
+ 	char *gtagstmp;
+ {
+ 	SCR *sp;
+ 	TAG *tp;
+ 	int tagcnt = 0;
+ 
+ 	/* make sure */
+ 	if (strncmp(gtagstmp, _PATH_GTAGSTMP, strlen(_PATH_GTAGSTMP)))
+ 		return 0;
+ 	/* this gtag is generated by -t option. don't delete here */
+ 	if (__global_list->gtagstmp && !strcmp(gtagstmp, __global_list->gtagstmp))
+ 		return 0;
+ 
+ 	for (sp = __global_list->dq.cqh_first; sp != (void *)&__global_list->dq; sp = sp->q.cqe_next) {
+ 		if (!EXP(sp))
+ 			continue;
+ 		for (tp = EXP(sp)->tagq.tqh_first; tp != NULL; tp = tp->q.tqe_next) {
+ 			if (!tp->frp || !F_ISSET(tp->frp, FR_GTAGSTMP))
+ 				continue;
+ 			if (!strcmp(tp->frp->name, gtagstmp))
+ 				++tagcnt;
+ 		}
+ 	}
+ 	if (tagcnt == 1)
+ 		return 1;
+ 	if (tagcnt > 1)
+ 		return 0;
+ 	/* IMPOSSIBLE */
+ 	return 0;
+ }
+ #endif
+ 
  /*
   * ex_tagfirst --
   *	The tag code can be entered from main, i.e. "vi -t tag".
***************
*** 86,96 ****
--- 298,317 ----
  	u_int flags;
  	int sval;
  	char *p, *tag, *name, *search;
+ #ifdef GTAGS
+ 	int gtagselect = 0;
+ #endif
  
  	/* Taglength may limit the number of characters. */
  	if ((tl = O_VAL(sp, O_TAGLENGTH)) != 0 && strlen(tagarg) > tl)
  		tagarg[tl] = '\0';
  
+ #ifdef GTAGS
+ 	if (O_ISSET(sp, O_GTAGSMODE)) {
+ 		if (gtag_get(sp, 0, &gtagselect, tagarg, &tag, &name, &search))
+ 			return (1);
+ 	} else 
+ #endif
  	/* Get the tag information. */
  	if (tag_get(sp, tagarg, &tag, &name, &search))
  		return (1);
***************
*** 106,111 ****
--- 327,336 ----
  	 * The historic tags file format (from a long, long time ago...)
  	 * used a line number, not a search string.  I got complaints, so
  	 * people are still using the format.
+ #ifdef GTAGS
+ 	 * Yes, gtags use the old format. Search string is very flexible
+ 	 * but is not suitable to treat duplicate entries.
+ #endif
  	 */
  	if (isdigit(search[0])) {
  		m.lno = atoi(search);
***************
*** 132,137 ****
--- 357,371 ----
  	frp->lno = m.lno;
  	frp->cno = m.cno;
  	F_SET(frp, FR_CURSORSET);
+ #ifdef GTAGS
+ 	if (gtagselect) {
+ 		F_SET(frp, FR_GTAGSTMP);
+ 		if (!(sp->gp->gtagstmp = strdup(name))) {
+ 			msgq(sp, M_SYSERR, NULL);
+ 			return (1);
+ 		}
+ 	}
+ #endif
  
  	/* Might as well make this the default tag. */
  	if ((EXP(sp)->tlast = strdup(tagarg)) == NULL) {
***************
*** 142,153 ****
--- 376,399 ----
  }
  
  /* Free a tag or tagf structure from a queue. */
+ #ifdef GTAGS
  #define	FREETAG(tp) {							\
+ 	if (F_ISSET(tp->frp, FR_GTAGSTMP))				\
+ 		if (should_delete(tp->frp->name))			\
+ 			unlink(tp->frp->name);				\
  	TAILQ_REMOVE(&exp->tagq, (tp), q);				\
  	if ((tp)->search != NULL)					\
  		free((tp)->search);					\
  	FREE((tp), sizeof(TAGF));					\
  }
+ #else
+ #define	FREETAG(tp) {							\
+ 	TAILQ_REMOVE(&exp->tagq, (tp), q);				\
+ 	if ((tp)->search != NULL)					\
+ 		free((tp)->search);					\
+ 	FREE((tp), sizeof(TAGF));					\
+ }
+ #endif
  #define	FREETAGF(tfp) {							\
  	TAILQ_REMOVE(&exp->tagfq, (tfp), q);				\
  	free((tfp)->name);						\
***************
*** 182,189 ****
--- 428,464 ----
  	int sval;
  	long tl;
  	char *name, *p, *search, *tag;
+ #ifdef GTAGS
+ 	int gtagselect = 0;
+ 	char *line;
+ 	size_t len;
+ 	char tagbuf[80], namebuf[200], linebuf[10];
+ #endif
  
  	exp = EXP(sp);
+ #ifdef GTAGS
+ 	/*
+ 	 * Enter from gtag select mode.
+ 	 * get tag information from current line.
+ 	 */
+ 	if (F_ISSET(cmdp, E_GTAGSELECT)) {
+ 		if ((line = file_gline(sp, ep, sp->lno, &len)) == NULL) {
+ 			GETLINE_ERR(sp, sp->lno);
+ 			return (1);
+ 		}
+ 		if (getentry(line, tagbuf, namebuf, linebuf) == 0) {
+ 			msgq(sp, M_ERR, "illegal tag entry");
+ 			return (1);
+ 		}
+ 		if (!(tag = strdup(tagbuf))) {
+ 			msgq(sp, M_SYSERR, NULL);
+ 			return (1);
+ 		}
+ 		name = namebuf;
+ 		search = linebuf;
+ 		goto getfref;
+ 	}
+ #endif
  	switch (cmdp->argc) {
  	case 1:
  		if (exp->tlast != NULL)
***************
*** 207,216 ****
--- 482,504 ----
  	if ((tl = O_VAL(sp, O_TAGLENGTH)) != 0 && strlen(exp->tlast) > tl)
  		exp->tlast[tl] = '\0';
  
+ #ifdef GTAGS
+ 	if (O_ISSET(sp, O_GTAGSMODE)) {
+ 		if (gtag_get(sp, F_ISSET(cmdp->cmd, E_REFERENCE), &gtagselect,
+ 			exp->tlast, &tag, &name, &search))
+ 			return (1);
+ 	} else if (F_ISSET(cmdp->cmd, E_REFERENCE)) {
+ 		msgq(sp, M_ERR, "Please set gtagsmode");
+ 		return (1);
+ 	} else
+ #endif
  	/* Get the tag information. */
  	if (tag_get(sp, exp->tlast, &tag, &name, &search))
  		return (1);
  
+ #ifdef GTAGS
+ getfref:
+ #endif
  	/* Get the (possibly new) FREF structure. */
  	if ((frp = file_add(sp, name)) == NULL)
  		goto err;
***************
*** 305,310 ****
--- 593,603 ----
  		sp->cno = m.cno;
  		break;
  	}
+ #ifdef GTAGS
+ 	if (gtagselect) {
+ 		F_SET(frp, FR_GTAGSTMP);
+ 	}
+ #endif
  	return (0);
  }
  
***************
*** 490,495 ****
--- 783,793 ----
  	for (cnt = 1, tp = exp->tagq.tqh_first; tp != NULL;
  	    ++cnt, tp = tp->q.tqe_next) {
  		len = strlen(name = tp->frp->name);	/* The original name. */
+ #ifdef GTAGS
+ 		if (F_ISSET(tp->frp, FR_GTAGSTMP)) {
+ 			(void)ex_printf(EXCOOKIE, "%2d [GTAGS]\n", cnt);
+ 		} else
+ #endif
  		if (len > maxlen || len + tp->slen > sp->cols)
  			if (tp == NULL || tp->search == NULL)
  				(void)ex_printf(EXCOOKIE,
diff -c -r -N /usr/src/usr.bin/vi/ex/excmd.c ./ex/excmd.c
*** /usr/src/usr.bin/vi/ex/excmd.c	Thu Aug 18 10:13:29 1994
--- ./ex/excmd.c	Sat Dec 14 11:54:15 1996
***************
*** 319,324 ****
--- 319,331 ----
  	    "!",
  	    "rew[ind][!]",
  	    "re-edit all the files in the file argument list"},
+ #ifdef GTAGS
+ /* C_RTAG */
+ 	{"rtag",	ex_tagpush,	E_NOGLOBAL|E_REFERENCE,
+ 	    "!w1o",
+ 	    "rta[g][!] [string]",
+ 	    "edit the file containing the tag"},
+ #endif
  /* C_SUBSTITUTE */
  	{"substitute",	ex_substitute,	E_ADDR2|E_NORC,
  	    "s",
***************
*** 329,334 ****
--- 336,348 ----
  	    "!f1o",
  	    "sc[ript][!] [file]",
  	    "run a shell in a screen"},
+ #ifdef GTAGS
+ /* C_GTAGSELECT */
+ 	{"select",	ex_gtagselect,	E_NOGLOBAL,
+ 	    "",
+ 	    "sel[ect]",
+ 	    "edit the file containing the tag"},
+ #endif
  /* C_SET */
  	{"set",		ex_set,		E_NOGLOBAL,
  	    "wN",
diff -c -r -N /usr/src/usr.bin/vi/ex/excmd.h.stub ./ex/excmd.h.stub
*** /usr/src/usr.bin/vi/ex/excmd.h.stub	Wed Aug 17 08:36:28 1994
--- ./ex/excmd.h.stub	Sat Dec 14 11:54:15 1996
***************
*** 69,74 ****
--- 69,79 ----
  #define	E_NORC		0x0800000	/* Not from a .exrc or EXINIT. */
  #define	E_ZERO		0x1000000	/* 0 is a legal addr1. */
  #define	E_ZERODEF	0x2000000	/* 0 is default addr1 of empty files. */
+ 
+ #ifdef GTAGS
+ #define E_REFERENCE	0x4000000	/* locate function references */
+ #define E_GTAGSELECT	0x8000000	/* current line is gtags entry */
+ #endif
  	u_int32_t flags;
  	char	 *syntax;		/* Syntax script. */
  	char	*usage;			/* Usage line. */
***************
*** 234,239 ****
--- 239,245 ----
  EXPROTO(ex_fg);
  EXPROTO(ex_file);
  EXPROTO(ex_global);
+ EXPROTO(ex_gtagselect);
  EXPROTO(ex_help);
  EXPROTO(ex_insert);
  EXPROTO(ex_join);
diff -c -r -N /usr/src/usr.bin/vi/svi/svi_refresh.c ./svi/svi_refresh.c
*** /usr/src/usr.bin/vi/svi/svi_refresh.c	Tue May 30 15:35:56 1995
--- ./svi/svi_refresh.c	Sat Dec 14 11:54:16 1996
***************
*** 725,731 ****
--- 725,736 ----
  	EXF *ep;
  {
  	size_t cols, curlen, endpoint, len, midpoint;
+ #ifdef GTAGS
+ 	char *p, buf[30];
+ 	recno_t last;
+ #else
  	char *p, buf[20];
+ #endif
  
  	/* Clear the mode line. */
  	MOVE(sp, INFOLINE(sp), 0);
***************
*** 746,751 ****
--- 751,765 ----
  
  	curlen = 0;
  	if (sp->q.cqe_next != (void *)&sp->gp->dq) {
+ #ifdef GTAGS
+ 		if (F_ISSET(sp->frp, FR_GTAGSTMP)) {
+ 			if (file_lline(sp, ep, &last)) {
+ 				return (1);
+ 			}
+ 			sprintf(buf, "[GTAGS SELECT MODE] %d lines", last);
+ 			p = buf;
+ 		} else {
+ #endif
  		for (p = sp->frp->name; *p != '\0'; ++p);
  		while (--p > sp->frp->name) {
  			if (*p == '/') {
***************
*** 758,764 ****
  				break;
  			}
  		}
! 
  		MOVE(sp, INFOLINE(sp), 0);
  		standout();
  		for (; *p != '\0'; ++p)
--- 772,780 ----
  				break;
  			}
  		}
! #ifdef GTAGS
! 		}
! #endif
  		MOVE(sp, INFOLINE(sp), 0);
  		standout();
  		for (; *p != '\0'; ++p)
diff -c -r -N /usr/src/usr.bin/vi/vi/v_ex.c ./vi/v_ex.c
*** /usr/src/usr.bin/vi/vi/v_ex.c	Thu Aug 18 10:15:03 1994
--- ./vi/v_ex.c	Sat Dec 14 11:54:16 1996
***************
*** 298,303 ****
--- 298,308 ----
  	ARGS *ap[2], a;
  	EXCMDARG cmd;
  
+ #ifdef GTAGS
+ 	if (O_ISSET(sp, O_GTAGSMODE) && vp->m_start.cno == 0)
+ 		excmd(&cmd, C_RTAG, 0, OOBLNO, 0, 0, ap, &a, vp->keyword);
+ 	else
+ #endif
  	excmd(&cmd, C_TAG, 0, OOBLNO, 0, 0, ap, &a, vp->keyword);
  	return (sp->s_ex_cmd(sp, ep, &cmd, &vp->m_final));
  }
diff -c -r -N /usr/src/usr.bin/vi/vi/v_scroll.c ./vi/v_scroll.c
*** /usr/src/usr.bin/vi/vi/v_scroll.c	Thu Aug 18 10:15:15 1994
--- ./vi/v_scroll.c	Sat Dec 14 11:54:16 1996
***************
*** 255,260 ****
--- 255,269 ----
  	EXF *ep;
  	VICMDARG *vp;
  {
+ #ifdef GTAGS
+ 	EXCMDARG cmd;
+ 
+ 	if (F_ISSET(sp->frp, FR_GTAGSTMP)) {
+ 		memset(&cmd, 0, sizeof(EXCMDARG));
+ 		cmd.cmd = &cmds[C_GTAGSELECT];
+ 		return (sp->s_ex_cmd(sp, ep, &cmd, &vp->m_final));
+ 	}
+ #endif
  	/*
  	 * If it's a script window, exec the line,
  	 * otherwise it's the same as v_down().