линии печати, соответствующие шаблонам (print lines that match patterns)
Ошибки (баги) (Bugs)
Reporting Bugs
Email bug reports to the bug-reporting address ⟨bug-
grep@gnu.org⟩. An email archive
⟨https://lists.gnu.org/mailman/listinfo/bug-grep⟩ and a bug
tracker ⟨https://debbugs.gnu.org/cgi/pkgreport.cgi?package=grep⟩
are available.
Known Bugs
Large repetition counts in the {n,m} construct may cause grep to
use lots of memory. In addition, certain other obscure regular
expressions require exponential time and space, and may cause
grep to run out of memory.
Back-references are very slow, and may require exponential time.
