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 %TITLE 'MCCHANGE - replace a changed line'
MODULE MCCHANGE (				! replace a changed line
		IDENT = '3-001'			! File: MCCHANGE.BLI Edit: GB3001
		) =
BEGIN
!
!			  COPYRIGHT (c) 1981, 1985 BY
!	      DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
!		ALL RIGHTS RESERVED.
!
! THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
! ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
! INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
! COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
! OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
! TRANSFERRED.
!
! THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
! AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
! CORPORATION.
!
! DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
! SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
!

!++
! FACILITY:	EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
!	Replace a changed line.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: September 9, 1979
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 19-FEB-1981.  This module was created by
!	extracting routine EDT$$RPL_CHGDLN  from module MOVCUR.
! 1-002	- Regularize headers.  JBS 11-Mar-1981
! 1-003 - Put edt$$tst_eob in line. STS 22-Sep-1982
! 3-001 - Make argument in call to RPL_LN a string ptr.  GB 16-Mar-1983
!--

%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$RPL_CHGDLN : NOVALUE;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$RPL_CHGDLN  - replace a changed line'

GLOBAL ROUTINE EDT$$RPL_CHGDLN 			! replace a changed line
    : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine replaces the current line in the work file if it has changed.
!
! FORMAL PARAMETERS:
!
!	NONE
!
! IMPLICIT INPUTS:
!
!	LN_CHGD
!	LN_BUF
!	LN_LEN
!
! IMPLICIT OUTPUTS:
!
!	LN_CHGD
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$RPL_LN;

    EXTERNAL
	LN_CHGD,				! Indicates current line has changed.
    	WK_LN : REF LIN_BLOCK,
    	EOB_LN,
	LN_BUF,				! Current line buffer.
	LN_LEN;				! Length of current line.

!+
! Check the change flag.
!-

    IF (.LN_CHGD NEQ 0)
    THEN
	BEGIN
!+
! Line has changed, replace it unless it is EOB.
!-

	IF (.WK_LN NEQA EOB_LN) THEN EDT$$RPL_LN (CH$PTR (LN_BUF, 0, BYTE_SIZE), .LN_LEN);

!+
! And turn the change flag off
!-
	LN_CHGD = 0;
	END;

    END;


END
ELUDOM