Path: utzoo!utgpu!water!watmath!clyde!rutgers!gatech!bloom-beacon!think!ames!pasteur!ucbvax!CITHEX.CALTECH.EDU!carl
From: carl@CITHEX.CALTECH.EDU (Carl J Lydick)
Newsgroups: comp.os.vms
Subject: Re: FORTRAN DOUBLE SPACES PRINTED LINES WITH TABS
Message-ID: <880320030328.640@CitHex.Caltech.Edu>
Date: 20 Mar 88 11:04:30 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 23


 > I have a FORTRAN program that opens a text file and prints portions of it 
 > to the screen.  It seems that any line which contains a tab is double 
 > spaced by Fortran.  If I try to print a portion of a program, which uses 
 > tabs in every line, the complete screen is double spaced, one line of text, 
 > one blank line, etc.  Here are the open, print and format statements, 
 > perhaps one of you can tell me what I am doing wrong.
 > 
 > 	OPEN(UNIT=1,TYPE='OLD',NAME=FILE,READONLY,CARRIAGECONTROL='LIST')
 > 	.
 > 	PRINT 20,LINE
 > 20	FORMAT(1X,A80)
 > 
 > If one of you could tell me why this inserts a CRLF after any line 
 > containing a tab, I would be much obliged.

I can't be sure (you've elided the part of the code that would tell me), but I
suspect  that you've declared LINE to be CHARACTER*80.  If so, that means that
your PRINT statement is going to print 80  characters  (LINE  will  have  been
padded  to  80 characters with blanks if the input line was shorter).  Since a
TAB is a single character, but acts like 8  spaces,  you're  trying  to  print
something  that looks to the terminal like an 87-character line.  The line is,
therefore, not double-spaced, but wrapped.