sed: illegal option -- r

[massipasquesi]

Problem :

# git++ help
Available commands:
sed: illegal option -- r
usage: sed script [-Ealn] [-i extension] [file ...]
       sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
  help        	
sed: illegal option -- r
usage: sed script [-Ealn] [-i extension] [file ...]
       sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
  list        	
sed: illegal option -- r
usage: sed script [-Ealn] [-i extension] [file ...]
       sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
  version     	
sed: illegal option -- r
usage: sed script [-Ealn] [-i extension] [file ...]
       sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
  hello       	

Solution on OSX with brew:
brew install gnu-sed --default-names

If still not working remove default sed binarie in /bon/sed and make a symlink :
sudo ln -s /usr/local/bin/gnu-sed /bin/sed