46 lines
1.7 KiB
Plaintext
46 lines
1.7 KiB
Plaintext
PURPOSE of /CoreOS/sed/Regression/sed-reports-syntax-errors-with-some-multibyte
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Description: Test for sed reports syntax errors with some multibyte
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Author: Marek Polacek <mpolacek@redhat.com>
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Bug summary: sed reports syntax errors with some multibyte characters
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Description:
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Description of problem:
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Using a multibyte character that ends with 0x5c (backslash) can cause sed to report syntax errors.
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Version-Release number of selected component (if applicable): sed-4.1.5-5
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How reproducible: Always
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Steps to Reproduce:
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1. Start with your shell in a UTF-8 locale, eg en-US.UTF-8 (you can probably do this in a different locale, but it definitely works if you start in a UTF-8 locale).
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2. Run the follow commands to construct a sed script:
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U2010=$(echo -ne '\x20\x10' | iconv -f ucs-2be)
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echo "echo '$U2010' | sed 's/$U2010/hyphen/g'" | iconv -t gbk > /tmp/script
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3. Run the shell script in a locale that uses the gbk character set:
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LC_ALL=zh_CN.gbk sh /tmp/script 2>&1 | iconv -f gbk
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Actual results:
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The script reports an error:
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sed：-e 表达式 #1，字符 13：unterminated `s' command
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Expected results:
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The single word "hyphen"
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Additional info:
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The error arises because the character U+2010 (HYPHEN) is encoded as \xa9\x5c in the gbk encoding. Sed sees the "\x5c" as a backslash escaping the following character which, in this case, is the "/" that we hope is going to terminate the pattern; it doesn't and so we get a syntax error.
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Of course, this is just one character in one encoding. There are likely to be many others and this is just one example. I have another example for SJIS, (U+8868) but SJIS isn't a good encoding to use for reporting bugs :-).
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