Set COLORDIFF to DIFF when stdout is not attached to a terminal.
tree9a57d818e3d017e40ee882cdad03ab77d00e3db6
-rw-r--r-- 21 .gitattributes
-rw-r--r-- 37 AUTHORS
-rw-r--r-- 35147 COPYING
-rwxr-xr-x 62518 svn-wrapper.sh