尝试匹配包含某些单词的文档的整个句子，即使该句子跨越多行。
我目前的尝试只有在句子没有延伸到下一行的情况下才能捕捉到它。
^.*b(dog|cat|bird)b.*.
使用ECMAScript。
当输入中没有缩写时，使用
/b[^?!.]*?b(dog|cat|bird)b[^?!.]*[.?!]/gi
请参阅正则表达式证明。
解释
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b the boundary between a word char (w) and
something that is not a word char
--------------------------------------------------------------------------------
[^?!.]*? any character except: '?', '!', '.' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
b the boundary between a word char (w) and
something that is not a word char
--------------------------------------------------------------------------------
( group and capture to 1:
--------------------------------------------------------------------------------
dog 'dog'
--------------------------------------------------------------------------------
| OR
--------------------------------------------------------------------------------
cat 'cat'
--------------------------------------------------------------------------------
| OR
--------------------------------------------------------------------------------
bird 'bird'
--------------------------------------------------------------------------------
) end of 1
--------------------------------------------------------------------------------
b the boundary between a word char (w) and
something that is not a word char
--------------------------------------------------------------------------------
[^?!.]* any character except: '?', '!', '.' (0 or
more times (matching the most amount
possible))
--------------------------------------------------------------------------------
[.?!] any character of: '.', '?', '!'