I'm trying to make a regex to match unescaped comma characters in a string.
The rule I'm looking for is "A comma not preceded by an even number of backslashes".
Test cases:
True abc,abc
False abc\,abc
True abc\\,abc
False abc\\\,abc
True abc\\\\,abc
False abc\\\\\,abc
I tried to use a negative look-behind: (?<!(\\\\+)),
but Python gives me error: look-behind requires fixed-width pattern
.
Try this regex: (?<!\\\\)(?:\\\\\\\\)*,
Explanation:
(?<!\\) Matches if the preceding character is not a backslash
(?:\\\\)* Matches any number of occurrences of two backslashes
, Matches a comma
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