grep-3.3

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

NEWS

• Noteworthy changes in release 3.2 (2018-12-20) [stable]

Changes in behavior

The --files-without-match (-L) option now causes grep to succeed when a file is listed, instead of when a line is selected. This resembles what git-grep does.

Bug fixes

The --recursive (-r) option no longer fails on MS-Windows. [bug introduced in grep 2.11]

Improvements

An over-30x performance improvement when many 'or'd expressions share a common prefix, thanks to improvements in gnulib's dfa.c, by Norihiro Tanaka. See gnulib commits v0.1-2110-ge648401be, v0.1-2111-g4299106ce, v0.1-2117-g617a60974

An additional 3-23% speed-up when searching large files, via increased initial buffer size.

grep now diagnoses stack overflow. Before grep-2.6, the included regexp code would detect it. Since 2.6, grep defaulted to using glibc's regexp, which lost that capability.

[Bruce Dubbs]

• Noteworthy changes in release 3.3 (2018-12-20) [stable]

Bug fixes

Some uses of \b in the C locale and with the DFA matcher would fail, e.g., the following would print nothing (it should print the input line):

echo 123-x|LC_ALL=C grep '.\bx'

Using a multibyte locale, using certain regexp constructs (some ranges, backreferences), or forcing use of the PCRE matcher via --perl-regexp (-P) would avoid the bug. [bug introduced in grep 2.3]

[Douglas R. Reno]

Fixed at r11495