我想对可选择的表述加以组合。 在这一具体例子中,我想在之间打上“<>>。 而且,如果“run或swim之前通过(带白色空间)的字句与整个短语一致。 因此,在<>至<>>之前的表述组合必须是任择的。
我想,以下所有内容都是积极的:
swim through <-- match entire phrase
jump through <-- match entire phrase
hike through <-- match only the word "through"
为此,我可以使用以下表述:
(jumpW|swimW)?through
但是,无需添加<代码>即可完成同样的工作。 W 后<>jump和swim? 我正试图这样做:
(jump|swim)?W?through
但是,这只是一个正常的工作,因为它将包含在第3个例子中之前的空间。 我只希望通过<>><>m>一词,而不是它周围的白色空间。
什么:(?:jumpswim)W? 通过
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