Too many open files

[sunnycemetery]

Hello.  Running the attached demonstration script results in the following 
errors, but I do not understand why:

> ./tmof: redirection error: cannot duplicate fd: Too many open files
> ./tmof: cannot make pipe for process substitution: Too many open files
> ./tmof: line 19: <( find "$d" -type f ): Too many open files

Removal of either the seemingly meaningless “if true” conditional or empty 
array declaration results in no error.  Could this be a bug?

5.0.0(1)-release

tmof
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