diff: tiny compat tweak
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -1298,6 +1298,8 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
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*/
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f1 = argv[0];
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f2 = argv[1];
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/* Compat: "diff file name_which_doesnt_exist" exits with 2 */
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xfunc_error_retval = 2;
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if (LONE_DASH(f1)) {
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fstat(STDIN_FILENO, &stb1);
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gotstdin++;
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@ -1308,6 +1310,7 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
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gotstdin++;
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} else
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xstat(f2, &stb2);
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xfunc_error_retval = 1;
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if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
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bb_error_msg_and_die("can't compare stdin to a directory");
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