I tried all kinds of options the *should* have worked (but didn't on the busybox versions I was using). I finally settled on something that *did* work (for the application I used it in). I have published a number of different solutions (with and without IFS) that each worked for *that* program. Substring stuff that works on k4 and touch does not work on k3, and some IFS stuff that works on k3 does not work on touch. It makes things a bit difficult to write code that works on all the kindle models.
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