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c1fcc80421
The line to set opterr=0 was added in the initial commit in
3d090cc6f3. But afaict, this never worked as
intended, because ':' must be the first char in optstring given to
getopt_long() for it to return ':' for a missing option value. Since
this wasn't set, getopt_long() would return '?', and the missing value
would be handled as an unknown option:
$ build/systemd-journal-upload --key
Unknown option --key.
$ build/systemd-journal-upload --asdf
Unknown option --asdf.
Let's just do the standard thing:
$ build/systemd-journal-upload --key
build/systemd-journal-upload: option '--key' requires an argument
$ build/systemd-journal-upload --asdf
build/systemd-journal-upload: unrecognized option '--asdf'