Bug in code which searches for executables

["David J. Fiander" <david@golem.uucp>]

I just found a bug in the code which searches for executables.
The problem was unearthed because I do not keep "." in my path.

The problem is that when you type "bin/foo", the program is not
found, but "./bin/foo" works.  To reproduce, remove "." from
your path (since searching the path will find it), cd to / and
type
	bin/echo hi

You should be told that bin/echo could not be found.

The problem is in which().  As you can see from the patch, I
have changed a call to "isabsolute()" which checks to see if
the path starts with /, ./, or ../, to a call to "strchr()" to
see if a "/" appears anywhere in the string for which we are
searching.

*** Standard Input	Fri Nov 15 12:40:09 1991
--- which.c	Fri Nov 15 09:56:23 1991
***************
*** 98,104 ****
  #endif
  	}
  
! 	if (isabsolute(name)) /* absolute pathname? */
  		return rc_access(name, verbose) ? name : NULL;
  
  	len = strlen(name);
--- 98,104 ----
  #endif
  	}
  
! 	if (strchr(name, '/')) /* explicit pathname? */
  		return rc_access(name, verbose) ? name : NULL;
  
  	len = strlen(name);

--
David J. Fiander   |A man ought to read just as inclination leads him; for
<david@golem.uucp> |what he reads as a task will do him little good.