[Info-vax] Backup API mailbox oddity

[osuvman50 at gmail.com]

I tried using the BACKUP$START() function to backup a list of files input via a mailbox (setting BKC_OPT_K_INPUT_FILES_IN TRUE).  It wasn't working until I realized it was reading and ignoring records from the mailbox until the first EOF, then reading records and processing them as input filenames until the next EOF.  Is this just typical CRTL funkiness or backup intentionally trying to read the input file twice?  I using 8.4 on Alpha.

The easy workaround is to make the application WRITEOF before writing the file list.

Also if you send BACKUP$START() no files, it gets confused and thinks you are trying to list a save set.