net.unix-wizards

[Neil Rhodes]

I would imagine this bug is present in 4.2BSD as well
Note that this bug causes spell to only check words through the first
.PS < filename
in a file and ignores the rest.

It was real frustrating to find typos in my slides *after* having
run spell.

Subject: deroff can screws up on .PS < filename (pic construct
Index:	usr.bin/deroff.c 4.3BSD

Description:
	Note that .PS starts a pic macro.
	Pic allows
		.PS < filename
	to include filename (like .so) and in this case doesn't
	require a matching .PE
	Deroff shouldn't require a matching .PE in this case.
Repeat-By:

	Feed the following lines to deroff:
		abc
		.PS < foobar
		def
		ghi

	Deroff should return:
		abc
		def
		ghi

	bug actually returns
		abc

Fix:
	What follows is a contextual diff
*** /usr/src/usr.bin/deroff.c	Mon Dec  9 16:01:47 1985
--- deroff.c	Tue Feb 18 14:34:03 1986
***************
*** 922,927 ****
--- 922,934 ----
  }
  PS()
  {
+ 	for (C ; c == ' ' || c == '\t';C)
+ 		;		/* skip white space */
+ 	if (c == '<'){		/* construct is .PS < file -- don't expect 
+ 				   a .PE */
+ 		SKIP;
+ 		return(0);		   
+ 	}
  	if (!msflag) {
  		inpic();
  	} else {
-- 
Neil Rhodes
UC San Diego

neil at ucsd
{ucbvax,decvax}!sdcsvax!neil