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Path: utzoo!linus!philabs!cmcl2!seismo!hao!nbires!boulder!geoff
From: geoff@boulder.UUCP (Geoffrey M. Clemm)
Newsgroups: net.bugs.4bsd
Subject: sed
Message-ID: <363@boulder.UUCP>
Date: Tue, 14-May-85 12:44:18 EDT
Article-I.D.: boulder.363
Posted: Tue May 14 12:44:18 1985
Date-Received: Thu, 16-May-85 06:40:21 EDT
Distribution: net
Organization: University of Colorado, Boulder
Lines: 39

.

Description :
   The manual entry for the sed "t" (test) command states that the branch
   should be taken if :
      "any substitutions have been made since the most recent reading of an
      input line or execution of a 't'."
   But the substitution flag is not reset when an input line is read.

Repeat By :
   Create a file named bug.sed containing the following sed command script :
--------------------------------------------
s/j/"j"/
t found
s/$/ : no j's here !/
b
:found
s/$/ : found a j !/
--------------------------------------------
   Then run "sed -f bug.sed".  After the first line containing a "j" is
read, all subsequent lines (whether they contain a j or not) will be marked
with "found a j".

Fix :
   Reset the sflag to 0 in gline() in sed1.c .  A context diff follows :

--- sed1.c	Tue May 14 10:15:38 1985
***************
*** 650,653
  	register char	*p1, *p2;
  	register	c;
  	p1 = addr;
  	p2 = cbp;
--- 650,654 -----
  	register char	*p1, *p2;
  	register	c;
+ 	sflag = 0;
  	p1 = addr;
  	p2 = cbp;