Index: subversion/svn/main.c =================================================================== --- subversion/svn/main.c (revision 20915) +++ subversion/svn/main.c (working copy) @@ -98,7 +98,33 @@ N_("specify a password ARG")}, #ifndef AS400 {"extensions", 'x', 1, - N_("pass ARG to --diff-cmd as options (default: '-u')")}, + N_("Default: '-u'. When Subversion is invoking an\n" + " " + " external diff program, ARG is simply passed along\n" + " " + " to the program. But when Subversion is using its\n" + " " + " default internal diff implementation, or when\n" + " " + " Subversion is displaying blame annotations, ARG\n" + " " + " could be any of the following:\n" + " " + " -u (--unified):\n" + " " + " Output 3 lines of unified context.\n" + " " + " -b (--ignore-space-change):\n" + " " + " Ignore changes in the amount of white space.\n" + " " + " -w (--ignore-all-space):\n" + " " + " Ignore all white space.\n" + " " + " --ignore-eol-style:\n" + " " + " Ignore changes in EOL style")}, #endif {"targets", svn_cl__targets_opt, 1, N_("pass contents of file ARG as additional args")},