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# spec/nul-bytes |
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|
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#### NUL bytes with echo -e |
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case $SH in (dash) exit ;; esac |
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|
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echo -e '\0' |
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## stdout-repr: "\x00\n" |
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## N-I dash stdout-json: "" |
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|
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#### NUL bytes in printf format |
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printf '\0\n' |
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## stdout-repr: "\x00\n" |
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|
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#### NUL bytes in printf value (OSH and zsh agree) |
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case $SH in (dash) exit ;; esac |
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|
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nul=$'\0' |
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echo "$nul" |
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printf '%s\n' "$nul" |
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|
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## stdout-repr: "\n\n" |
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## OK osh/zsh stdout-repr: "\x00\n\x00\n" |
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## N-I dash stdout-json: "" |
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|
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|
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|
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#### NUL bytes with echo $'\0' (OSH and zsh agree) |
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|
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case $SH in (dash) exit ;; esac |
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|
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# OSH agrees with ZSH -- so you have the ability to print NUL bytes without |
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# legacy echo -e |
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|
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echo $'\0' |
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|
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## stdout-repr: "\n" |
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## OK osh/zsh stdout-repr: "\0\n" |
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## N-I dash stdout-json: "" |
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|
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|
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#### NUL bytes and IFS splitting |
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case $SH in (dash) exit ;; esac |
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|
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argv.py $(echo -e '\0') |
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argv.py "$(echo -e '\0')" |
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argv.py $(echo -e 'a\0b') |
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argv.py "$(echo -e 'a\0b')" |
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|
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## STDOUT: |
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[] |
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[''] |
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['ab'] |
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['ab'] |
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## END |
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## BUG zsh STDOUT: |
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['', ''] |
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[''] |
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['a', 'b'] |
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['a'] |
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## END |
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|
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## N-I dash STDOUT: |
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## END |
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|
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#### NUL bytes with test -n |
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|
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case $SH in (dash) exit ;; esac |
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|
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# zsh is buggy here, weird |
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test -n $'' |
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echo status=$? |
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|
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test -n $'\0' |
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echo status=$? |
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|
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|
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## STDOUT: |
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status=1 |
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status=1 |
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## END |
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## OK osh STDOUT: |
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status=1 |
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status=0 |
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## END |
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## BUG zsh STDOUT: |
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status=0 |
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status=0 |
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## END |
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|
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## N-I dash STDOUT: |
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## END |
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|
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|
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#### NUL bytes with test -f |
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|
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case $SH in (dash) exit ;; esac |
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|
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|
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test -f $'\0' |
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echo status=$? |
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|
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touch foo |
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test -f $'foo\0' |
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echo status=$? |
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|
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test -f $'foo\0bar' |
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echo status=$? |
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|
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test -f $'foobar' |
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echo status=$? |
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|
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|
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## STDOUT: |
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status=1 |
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status=0 |
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status=0 |
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status=1 |
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## END |
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|
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## OK ash STDOUT: |
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status=1 |
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status=0 |
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status=1 |
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status=1 |
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## END |
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|
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## N-I dash STDOUT: |
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## END |
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|
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|
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#### NUL bytes with ${#s} (OSH and zsh agree) |
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|
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case $SH in (dash) exit ;; esac |
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|
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empty=$'' |
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nul=$'\0' |
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|
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echo empty=${#empty} |
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echo nul=${#nul} |
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|
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|
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## STDOUT: |
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empty=0 |
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nul=0 |
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## END |
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|
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## OK osh/zsh STDOUT: |
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empty=0 |
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nul=1 |
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## END |
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|
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## N-I dash STDOUT: |
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## END |