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--- ./texk/kpathsea/xputenv.c~	Tue Jan 26 21:49:35 1999
+++ ./texk/kpathsea/xputenv.c	Sun Jun 27 01:01:15 1999
@@ -26,6 +26,14 @@
 extern int putenv ();
 #endif /* not WIN32 */
 
+/* I don't understand the code here compleatly. My xdvi (and other programms)
+   dump core becouse saved_env_items[i] is set to var_name - but varname is
+   (at least when called from xputenv_int) not a malloced() variable. So it's
+   value at the next invocation is undefined. In my case the assertation for
+   old_item fired ...   I just define SMART_PUTENV here. I'm not sure if this
+   is the right thing to do - but it solves my problem   - Clifford */
+#define SMART_PUTENV
+
 /* This `x' function is different from the others in that it takes
    different parameters than the standard function; but I find it much
    more convenient to pass the variable and the value separately.  Also,