id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
3988	grep-2.26	bdubbs@…	bdubbs@…	"New minor version.

* Noteworthy changes in release 2.26 (2016-10-02) [stable]

** Bug fixes

  Grep no longer omits output merely because it follows an output line suppressed due to encoding errors.  [bug introduced in grep-2.21]

  In the Shift_JIS locale, grep no longer mistakenly matches in the
  middle of a multibyte character. [bug present since ""the beginning""]

** Improvements

  grep can be much faster now when standard output is /dev/null.

  grep -F is now typically much faster when many patterns are given,
  as it now uses the Aho-Corasick algorithm instead of the
  Commentz-Walter algorithm in that case.

  grep -iF is typically much faster in a multibyte locale, if the
  pattern and its case counterparts contain only single byte characters.

  grep with complicated expressions (e.g., back-references) and without
  -i now uses the regex fastmap for better performance.

  In multibyte locales, grep now handles leading ""."" in patterns more
  efficiently.

  grep now prints a ""FILENAME:LINENO: "" prefix when diagnosing an
  invalid regular expression that was read from an '-f'-specified file."	task	closed	normal	8.0	Book	SVN	normal	fixed