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Annotation of researchv10no/cmd/basic/bite/src/cover.c, revision 1.1.1.1

1.1       root        1: /* Copyright Bell Telephone Laboratories Whippany, N.J.
                      2: 
                      3:  *     ***********************************
                      4:  *     ***********************************
                      5:  *     ***** COVER UP DELETED LINES ******
                      6:  *     *** R. B. Drake WH 8C-005 X4163 ***
                      7:  *     **** Fri Aug 24 17:11:58 1979 *****
                      8:  *     ***********************************
                      9:  *     ***********************************
                     10:  * This routine is
                     11:  * called by "bed" and used to slide the program txtbuf down when
                     12:  *   necessary to reclaim space created by the shortening of a line
                     13:  *   or by a delete 
                     14: 
                     15: */
                     16: /*   "@(#) cover.c:  V 1.1  12/21/80" */
                     17: #include "bas.h"
                     18: cover(f,t)
                     19: char *f,*t;
                     20: 
                     21: {
                     22: register char *from,*to;
                     23:                from=f;to=t;
                     24:                curptr = to;
                     25:                clear();
                     26:                while(from != linptr)
                     27:                        *to++ = *from++;
                     28:                linptr -= from - to;
                     29:                *linptr = '\0';
                     30:                *(linptr+1) = '\0';
                     31:                *(linptr+2) = '\0'; /* two zero bytes for eof */
                     32:                update();
                     33:                return(0);
                     34: }

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