for (end = name; *end != '=' && *end; ) end++;
len = end - name;
/* Find name in environment and move remaining variables down.
Do not early-out in case there are duplicate names. */
for (end = name; *end != '=' && *end; ) end++;
len = end - name;
/* Find name in environment and move remaining variables down.
Do not early-out in case there are duplicate names. */