bug in arithmetic expansion

[Joern Knoll]

Hallo,

in playing around with digital keys (integers) which have a simple 
arithmetic check property, I encountered problemsusing bash's arithmetic 
expansion, when ever the used digital substrings have leading zeros. The 
problem shows up already for the simplest operations, namely converting 
a string argument to its numerical value, as shown below.

With thanks for your attention and best regards, Jörn Knoll

[tplx99]:/the/knoll > echo $((0123))
83
[tplx99]:/the/knoll > echo $((123))
123
[tplx99]:/the/knoll > echo $((01234))
668
[tplx99]:/the/knoll > echo $((1234))
1234


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