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fixes #1836

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Ilya Kantor 2020-04-03 01:54:22 +03:00
parent 6f45ce77c9
commit a55b99cc5f
1 changed files with 3 additions and 3 deletions
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9-regular-expressions/14-regexp-lookahead-lookbehind/article.md
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@ -26,10 +26,10 @@ More complex tests are possible, e.g. `pattern:X(?=Y)(?=Z)` means:
1. Find `pattern:X`. 1. Find `pattern:X`.
2. Check if `pattern:Y` is immediately after `pattern:X` (skip if isn't). 2. Check if `pattern:Y` is immediately after `pattern:X` (skip if isn't).
3. Check if `pattern:Z` is immediately after `pattern:Y` (skip if isn't). 3. Check if `pattern:Z` is also immediately after `pattern:X` (skip if isn't).
4. If both tests passed, then it's the match. 4. If both tests passed, then the `pattern:X` is a match, otherwise continue searching.
In other words, such pattern means that we're looking for `pattern:X` followed by `pattern:Y` and `pattern:Z` at the same time. In other words, such pattern means that we're looking for `pattern:X` followed by `pattern:Y` and `pattern:Z` at the same time.
That's only possible if patterns `pattern:Y` and `pattern:Z` aren't mutually exclusive. That's only possible if patterns `pattern:Y` and `pattern:Z` aren't mutually exclusive.