Matching a line without either of two words
I was wondering how to match a line without either of two words?
For example, I would like to match a line without neither Chapter nor Part . So neither of these two lines is a match:
("Chapter 2 The Economic Problem 31" "#74")
("Part 2 How Markets Work 51" "#94")
while this is a match
("Scatter Diagrams 21" "#64")
My python-style regex will be like (?<!(Chapter|Part)).*?n . I know it is not right and will appreciate your help.
尝试这个：
^(?!.*(Chapter|Part)).*
@MRAB's solution will work, but here's another option:
(?m)^(?:(?!b(?:Chapter|Part)b).)*$
The . matches one character at a time, after the lookahead checks that it's not the first character of Chapter or Part . The word boundaries ( b ) make sure it doesn't incorrectly match part of a longer word, like Partition .
The ^ and $ are start- and end anchors; they ensure that you match a whole line. $ is better than n because it also matches the end of the last line, which won't necessarily have a linefeed at the end. The (?m) at the beginning modifies the meaning of the anchors; without that, they only match at the beginning and end of the whole input, not of individual lines.
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