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* * Support the environtmental var "DIFF_OPTIONS". Which can hold a set ofDavid E. O'Brien1999-11-261-0/+86
default options for diff. These options are interpreted first and can be overwritten by explicit command line parameters. * Add the "-o" option to specify old-traditional output style. * Add utility functions for env vars obtained from GNU Grep 2.3h. Notes: svn path=/head/; revision=53703