如何删除包含特定字符串的所有行，但仅当后面的字符是CJK字符时？

Question

我需要删除包含read (symbol)匹配项的文件中的所有行，其中(symbol)是任何CJK字符。在匹配中，read (symbol)紧接着是A-Z或a-z，但是，不应删除该行。例如，以下是一些示例行和结果：

Do you like to read books? (not deleted)
Can you read 书? ( deleted)
.read 书. (deleted)
This is some thread 线. (not deleted)

如何仅删除与(not A-Z or a-z)read (CJK symbol)匹配的行？

Answer 1

awk '$0~/ read [a-zA-Z]+/' your_file

Answer 2

我不完全确定如何匹配CJK字符，但如果您匹配非ASCII字符，可能会达到您正在寻找的结果：

grep -vP "[^A-Za-z]read [\x80-\xFF]" file.txt

理论上，你应该可以这样做：

grep -vP "[^A-Za-z]read [\x{2E80}-\x{9FBB}]+" file.txt

然而，在我的测试中，我收到错误：

grep: character value in \x{...} sequence is too large

http://en.wikipedia.org/wiki/List_of_Unicode_characters#CJK_unified_ideographs

修改

LC_ALL="POSIX" sed -r '/[^A-Za-z]read [\o200-\o377]+/d' file.txt

结果：

Do you like to read books? (not deleted)
This is some thread 线. (not deleted)

另见：

How to delete all CJK text appearing immediately after a particular symbol?