如何用正则表达式捕获句子及标点？解决部分句子未捕获问题

Here's a regex that will capture all three sentences along with their ending punctuation (including newlines):

(?'s'.*?)(?'p'(?:[.!]\n?|\n))

Breakdown: #

• (?'s'.*?): This non-greedy named group (s) grabs the main sentence content, stopping at the first ending marker (either punctuation or newline).
• (?'p'(?:[.!]\n?|\n)): The named group (p) captures the ending:
  • [.!]\n?: Matches a period or exclamation mark, followed by an optional newline (covers your second and third lines).
  • |\n: Adds support for lines that end only with a newline (like your first title line, which has no trailing . or !).

This regex will correctly capture:

• First line: s = the full title text, p = the newline character.
• Second line: s = the sentence before the period, p = . + newline.
• Third line: s = the sentence before the exclamation mark, p = ! + newline.

If you're using Python, swap to Python-style named group syntax:

(?P<s>.*?)(?P<p>(?:[.!]\n?|\n))

内容的提问来源于stack exchange，提问作者craig