阻止sed中的\S匹配标记(<p>，</p>)

Question

尝试在bash中创建自定义脚本：

GENDER=M
T='<p>He§She is a very handsome§beautiful man§woman</p>'
[[ $GENDER = M ]] && sed 's:§\S*::g' <<< "$T" || sed 's:\S*§::g' <<< "$T"

Output: <p>He is a very handsome man
Desired: <p>He is a very handsome man</p>

同样：

GENDER=F
T='<p>He§She is a very handsome§beautiful man§woman</p>'
[[ $GENDER = M ]] && sed 's:§\S*::g' <<< "$T" || sed 's:\S*§::g' <<< "$T"

Output: She is a very beautiful woman</p>
Desired: <p>She is a very beautiful woman</p>

有什么想法吗？谢谢。

Answer 1

这里的问题是，当您不希望\S匹配<和>字符时，它却将其匹配。

从使用\S切换到POSIX字符类不仅使您的代码与更多版本的sed兼容，还允许您控制向这些类添加额外的字符，在本例中为<和>：

selectWords() {
  case $1 in
    M) sed 's:§[^[:space:]<>]*::g' <<<"$2" ;;
    *) sed 's:[^[:space:]<>]*§::g' <<<"$2" ;;
  esac
}

selectWords M '<p>He§She is a very handsome§beautiful man§woman</p>'
selectWords F '<p>He§She is a very handsome§beautiful man§woman</p>'

...properly emits

<p>He is a very handsome man</p>
<p>She is a very beautiful woman</p>