DragonFlyBSD

What? FreeBSD 11 grep executable from their userland, BSD license. ( FreeBSD: stable/11/usr.bin/grep/grep.c 280307 2015-03-21 00:21:30Z pfg )
why? because I saw it on this page as TODO: https://www.dragonflybsd.org/docs/developer/ProjectsPage/

* MAKEFILE *
Makefile has options to disable LZMA and bzip2 support (default = yes)
grep/Makefile:
MK_LZMA_SUPPORT =  "yes"/"no" 
MK_BZIP2_SUPPORT = "yes"/"no" 

NLS contingent on NLS being defined otherwise CFLAGS+= -DWITHOUT_NLS

* MISSING OPTION *
MK_GNU_GREP_COMPAT not done/verified right now since I didn't knew if it made sense to keep if/when you can still have gnu grep as well :/ (kindly advise)
grep/Makefile:
# .if ${MK_GNU_GREP_COMPAT} != "no" 
#CFLAGS+= -I${DESTDIR}/usr/include/gnu
#LIBADD+=       gnuregex
# .endif

• CHANGE TO ORIGINAL FUNCTIONALITY *
  grep/util.c:146
  I silenced a recursive warning message because it prints "warning: %s: recursive directory loop" to regular output, not stderr (rendering 2>/dev/null
  useless), if it would be better I'll check the warnx outputting function to see if I can redirect it to stderr. GNU grep does not print anything here either, I checked the source.

I haven't removed anything that compiled contrib gnu grep afaik, that might need to be checked

• INSTALLED EXECUTABLES *
  

  /usr/bin:
  [always]
  grep fgrep egrep zgrep zegrep zfgrep
  
  [MK_LZMA_SUPPORT]
  lzegrep lzgrep  xzegrep xzgrep lzfgrep xzfgrep
  
  [MK_BZIP2_SUPPORT]
  bzegrep bzgrep bzfgrep
  

(which are all symlinks to grep binary)

• INSTALLED MANPAGES *
  

  /usr/share/man/man1:
  egrep.1.gz zfgrep.1.gz bzegrep.1.gz lzgrep.1.gz xzfgrep.1.gz zgrep.1.gz lzfgrep.1.gz
  xzgrep.1.gz fgrep.1.gz zegrep.1.gz bzgrep.1.gz xzegrep.1.gz bzfgrep.1.gz
  pgrep.1.gz lzegrep.1.gz grep.1.gz
  

• TESTING *
  This grep was used by me through a few reboot and multiple make clean/buildkernel/buildworld as well as random personal usage. No errors were detected, nothing broke.

As always, I welcome all critiques and comments so I can learn and grow.