Re: [PATCH 2/2] generic/45[34]: don't warn on mixed bidirectional characters

[Zorro Lang <zlang@kernel.org>]

On Thu, May 07, 2026 at 03:23:34PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> We're dropping this warning from xfs_scrub because the warning is
> incorrect, so let's make sure the QA system checks that it's gone.
> 
> Cc: gedalya@gedalya.net
> Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
> ---

/me is just back from a paper about BIDI (Bidirectional Text), so the
"\xd7...\xaa" is RTL part, then ".pdf" is LTR part. OK, this test makes
sense to me. Darrick is going to become a word/char processing master now :)

Reviewed-by: Zorro Lang <zlang@kernel.org>

>  tests/generic/453 |   10 ++++++++++
>  tests/generic/454 |   10 ++++++++++
>  2 files changed, 20 insertions(+)
> 
> 
> diff --git a/tests/generic/453 b/tests/generic/453
> index 0193b010306c48..9b121d995ad1ab 100755
> --- a/tests/generic/453
> +++ b/tests/generic/453
> @@ -247,6 +247,10 @@ setf "tags_m\xf3\xa0\x81\xadoocow.txt" u1
>  # totally hidden name? "(Hi)" is the file name
>  setf "\xf3\xa0\x80\xa8\xf3\xa0\x81\x88\xf3\xa0\x81\xa9\xf3\xa0\x80\xa9" "(Hi)"
>  
> +# Gedalya complained about being flagged for mixing Hebrew (RTL) and Latin
> +# (LTR) codepoints in the same name.  This is a common practice.
> +setf "\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa.pdf" "mixed rtl and ltr chars?"
> +
>  ls -laR $testdir >> $seqres.full
>  
>  echo "Test files"
> @@ -359,6 +363,10 @@ testf "tags_m\xf3\xa0\x81\xadoocow.txt" u1
>  # totally hidden name? "(Hi)" is the file name
>  testf "\xf3\xa0\x80\xa8\xf3\xa0\x81\x88\xf3\xa0\x81\xa9\xf3\xa0\x80\xa9" "(Hi)"
>  
> +# Gedalya complained about being flagged for mixing Hebrew (RTL) and Latin
> +# (LTR) codepoints in the same name.  This is a common practice.
> +testf "\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa.pdf" "mixed rtl and ltr chars?"
> +
>  echo "Uniqueness of inodes?"
>  stat -c '%i' "${testdir}/"* | sort | uniq -c | while read nr inum; do
>  	if [ "${nr}" -gt 1 ]; then
> @@ -403,6 +411,8 @@ if _check_xfs_scrub_does_unicode "$SCRATCH_MNT" "$SCRATCH_DEV"; then
>  		grep -q 'tags_m.xf3.xa0.x81' $tmp.scrub || echo "No complaints about deprecated unicode tags in a name?"
>  	fi
>  
> +	grep -q 'mixes bidirectional characters' $tmp.scrub && echo "Unnecessary complaints about mixed bidi characters in a name?"
> +
>  	echo "Actual xfs_scrub output:" >> $seqres.full
>  	cat $tmp.scrub >> $seqres.full
>  fi
> diff --git a/tests/generic/454 b/tests/generic/454
> index 3454cae5d5ea6c..81c9a721561cf8 100755
> --- a/tests/generic/454
> +++ b/tests/generic/454
> @@ -168,6 +168,10 @@ setf "tags_m\xf3\xa0\x81\xadoocow.txt" u1
>  # totally hidden name? "(Hi)" is the file name
>  setf "\xf3\xa0\x80\xa8\xf3\xa0\x81\x88\xf3\xa0\x81\xa9\xf3\xa0\x80\xa9" "(Hi)"
>  
> +# Gedalya complained about being flagged for mixing Hebrew (RTL) and Latin
> +# (LTR) codepoints in the same name.  This is a common practice.
> +setf "\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa.pdf" "mixed rtl and ltr chars?"
> +
>  _getfattr --absolute-names -d "${testfile}" >> $seqres.full
>  
>  echo "Test files"
> @@ -256,6 +260,10 @@ testf "tags_m\xf3\xa0\x81\xadoocow.txt" u1
>  
>  # totally hidden name? "(Hi)" is the file name
>  testf "\xf3\xa0\x80\xa8\xf3\xa0\x81\x88\xf3\xa0\x81\xa9\xf3\xa0\x80\xa9" "(Hi)"
> +#
> +# Gedalya complained about being flagged for mixing Hebrew (RTL) and Latin
> +# (LTR) codepoints in the same name.  This is a common practice.
> +testf "\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa.pdf" "mixed rtl and ltr chars?"
>  
>  echo "Uniqueness of keys?"
>  crazy_keys="$(_getfattr --absolute-names -d "${testfile}" | grep -E -c '(french_|chinese_|greek_|arabic_|urk)')"
> @@ -285,6 +293,8 @@ if _check_xfs_scrub_does_unicode "$SCRATCH_MNT" "$SCRATCH_DEV"; then
>  		grep -q 'tags_m.xf3.xa0.x81' $tmp.scrub || echo "No complaints about deprecated unicode tags in a name?"
>  	fi
>  
> +	grep -q 'mixes bidirectional characters' $tmp.scrub && echo "Unnecessary complaints about mixed bidi characters in a name?"
> +
>  	echo "Actual xfs_scrub output:" >> $seqres.full
>  	echo "${output}" >> $seqres.full
>  fi
>