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Fix negative lookbehind syntax in RegexSyntax.md #197

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2 changes: 1 addition & 1 deletion Documentation/Evolution/RegexSyntax.md
Original file line number Diff line number Diff line change
Expand Up @@ -337,7 +337,7 @@ These groups evaluate the input ahead or behind the current matching position, w
- `(?=`: A lookahead, which matches against the input following the current matching position.
- `(?!`: A negative lookahead, which ensures a negative match against the input following the current matching position.
- `(?<=`: A lookbehind, which matches against the input prior to the current matching position.
- `(?!<`: A negative lookbehind, which ensures a negative match against the input prior to the current matching position.
- `(?<!`: A negative lookbehind, which ensures a negative match against the input prior to the current matching position.

The above groups are all atomic, meaning that they will not be re-evaluated for backtracking. There are however also non-atomic variants:

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