From the manual: the error can be checked with _geterr()
open "dirlist.txt" for input as #5 e=_geterr()
The result:
error: Unknown symbol _geterr
That's a typo in the documentation, the correct spelling is "geterr()" (without the underscore), and it's documented elsewhere in the manual.
pik33
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That's a typo in the documentation, the correct spelling is "geterr()" (without the underscore), and it's documented elsewhere in the manual.