It all depends on what you are doing, and what is happening
with the file. The warning from File::Temp points to the fact
that after you have opened a file, something else may have
(re)moved the file, and created another file with the same
name as the original one. I think the remark in File::Copy
points out that it's possible a file handle might not be opened with options that are appropriate - in the next sentences, it stresses the importance of having opened the
file in "binmode" (on certain platforms).
Abigail
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