Martin Stein 6e900f147c fs_query: read content only from readable files
When configuring fs_query to print the content of files it used to try so for
all files it found resulting in errors on files that are not readable. Now,
fs_query will check first whether a file is readable and skip printing the
content of those that are not.

Ref #4032
2021-05-28 14:15:27 +02:00
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