bug#22239: fgrep -i slow in 2.21

On 04/11/2016 12:14 AM, Ondřej Cífka wrote: > You're probably right about the locale. I'm using cs_CZ.UTF-8. With > LC_ALL=C, both variants run faster and the difference is > insignificant. > > With cs_CZ.UTF-8, on my machine, your test case takes 2.322s with -i > and 0.464s without -i. > > I teste

bug#22793: grep -E assertion failure with back references

> This is still a glibc bug, not a grep bug; it's just that we don't have a fix. I finally got around to finding the correct glibc bug report for this grep bug. Here it is: https://sourceware.org/bugzilla/show_bug.cgi?id=11053 I added a comment to the glibc bug, saying that it causes grep Bug#22