Re: [bash arithmetic bugs with "++","--","+=1" and "-=1"]

[Greg Wooledge]

On Fri, Jun 13, 2025 at 07:57:54 -0600, Stan Marsh wrote:
> Also, note that if you are running with "set -e" (or "trap ... ERR"), then 
> having
> "let" (or "(( ))") return a non-zero exit status when it happens to evaluate 
> to zero,
> could cause an unexpected script abort.

This is why I linked to <https://mywiki.wooledge.org/BashFAQ/105#Exercises>
which calls out precisely that issue.  The whole page is dedicated to
set -e and the problems that it creates.