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zeertzjqandlipengyu
116d15e6b6
Problem: Deeply nested regexp groups can cause uncontrolled recursion
in the regexp compiler and exhaust the C stack.
Solution: Limit recursive regexp parsing depth in both the backtracking
and NFA compilers (lipengyu)
closes: vim/vim#20731
https://github.com/vim/vim/commit/a79cd6bfc3e85e1d9f1ec48eda76c7385b44bf69
Co-authored-by: lipengyu <lipengyu@kylinos.cn>