vi/v_mark.c

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  */
   7
   8 #ifndef lint
   9 static char sccsid[] = "$Id: v_mark.c,v 8.3 1993/10/31 14:20:09 bostic Exp $ (Berkeley) $Date: 1993/10/31 14:20:09 $";
  10 #endif /* not lint */
  11
  12 #include <sys/types.h>
  13
  14 #include "vi.h"
  15 #include "vcmd.h"
  16
  17 /*
  18  * v_mark -- m[a-z]
  19  *      Set a mark.
  20  */
  21 int
  22 v_mark(sp, ep, vp, fm, tm, rp)
  23         SCR *sp;
  24         EXF *ep;
  25         VICMDARG *vp;
  26         MARK *fm, *tm, *rp;
  27 {
  28         rp->lno = fm->lno;
  29         rp->cno = fm->cno;
  30         return (mark_set(sp, ep, vp->character, fm, 1));
  31 }
  32
  33 /*
  34  * v_gomark -- '['`a-z], or `['`a-z]
  35  *      Move to a mark.
  36  *
  37  *      The single quote form moves to the first nonblank character of a line
  38  *      containing a mark.  The back quote form moves to a mark, setting both
  39  *      row and column.  We use a single routine for both forms, taking care
  40  *      of the nonblank behavior using a flag for the command.
  41  *
  42  *      Although not commonly known, the "'`" and "'`" forms are historically
  43  *      valid.  The behavior is determined by the first character, so "`'" is
  44  *      the same as "``".  Remember this fact -- you'll be amazed at how many
  45  *      people don't know it and will be delighted that you are able to tell
  46  *      them.
  47  */
  48 int
  49 v_gomark(sp, ep, vp, fm, tm, rp)
  50         SCR *sp;
  51         EXF *ep;
  52         VICMDARG *vp;
  53         MARK *fm, *tm, *rp;
  54 {
  55         MARK *mp;
  56
  57         if ((mp = mark_get(sp, ep, vp->character)) == NULL)
  58                 return (1);
  59         *rp = *mp;
  60         return (0);
  61 }