Comment 12 for bug 693151

Warren, there are many cosmetic changes in your patch, could you resubmit it without them?

E.g.
- custom_command = getenv(custom_env_var);
+ custom_command=getenv(custom_env_var);

- *(dest + MAXSTRSZ - 1) = '\0'; /* ensure null termination */
+ *(dest + MAXSTRSZ - 1) = '\0'; /* ensure null termination */

...which only involve spaces and wrapping, and make it hard to see the actual changes proposed.