Regex（Zotero）与ENG \ s + DOGS的哪些解决方法与ENG DOGS或ENGDOGS相匹配？

Question

表达式需要换行符和空格，但它们也不会出现。 0空间可能性。

ENG\s+DOGS需要匹配：

ENG DOGS 

ENGDOGS 

ENG [line break]
DOGS

Answer 1

您需要改为使用*量词。

ENG\s*DOGS

正则表达式：

ENG           # 'ENG'
 \s*          # whitespace (\n, \r, \t, \f, and " ") (0 or more times)
 DOGS         # 'DOGS'

以下量词被认可。

*      Match 0 or more times
+      Match 1 or more times
?      Match 1 or 0 times
{n}    Match exactly n times
{n,}   Match at least n times
{n,m}  Match at least n but not more than m times

Answer 2

这样做：

/ENG\s*DOGS/

Match the characters “ENG” literally «ENG»
Match a single character that is a “whitespace character” (spaces, tabs, and line breaks) «\s*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
Match the characters “DOGS” literally «DOGS»