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scripts/gzip_tests.sh: address all shellcheck warnings
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@ -151,15 +151,19 @@ cmp file.gz 2.gz
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cmp file orig
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# Note: in some of the commands below, we intentionally use 'cat file | gzip'
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# rather than 'gzip < file', in order to test the use of a pipe. This produces
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# a shellcheck warning about 'cat' being unnecessary. Suppress that warning by
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# using { cat file; true; }.
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begin_test 'Reading from stdin works'
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gzip < file > 1.gz
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gzip - < file > 2.gz
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cat file | gzip > 3.gz
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cat file | gzip - > 4.gz
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{ cat file; true; } | gzip > 3.gz
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{ cat file; true; } | gzip - > 4.gz
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cmp file <(gunzip < 1.gz)
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cmp file <(gunzip - < 2.gz)
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cmp file <(cat 3.gz | gunzip)
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cmp file <(cat 4.gz | gunzip -)
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cmp file <({ cat 3.gz; true; } | gunzip)
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cmp file <({ cat 4.gz; true; } | gunzip -)
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begin_test '-n option is accepted'
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@ -291,23 +295,23 @@ assert_skipped gunzip -f foo.gz
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begin_test '(gzip) overwriting symlink does not follow symlink'
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echo 1 > 1
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echo 2 > 2
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gzip 1
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ln -s 1.gz 2.gz
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gzip -f 2
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gunzip 1.gz
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cmp <(echo 1) 1
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echo a > a
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echo b > b
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gzip a
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ln -s a.gz b.gz
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gzip -f b
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gunzip a.gz
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cmp <(echo a) a
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begin_test '(gunzip) overwriting symlink does not follow symlink'
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echo 1 > 1
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echo 2 > 2
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gzip 2
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ln -s 1 2
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gunzip -f 2.gz
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cmp <(echo 1) 1
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cmp <(echo 2) 2
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echo a > a
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echo b > b
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gzip b
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ln -s a b
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gunzip -f b.gz
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cmp <(echo a) a
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cmp <(echo b) b
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begin_test '(gzip) hard linked file skipped without -f or -c'
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@ -438,10 +442,10 @@ cmp file orig
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begin_test 'Decompressing multi-member gzip file (final member smaller)'
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echo 'hello world' > 2
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cat file 2 > orig
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echo 'hello world' > hello
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cat file hello > orig
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gzip -c file > file.gz
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gzip -c 2 >> file.gz
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gzip -c hello >> file.gz
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gunzip -f file.gz
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cmp file orig
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