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diff -upr less-458_orig/lesskey.c less-458_work/lesskey.c
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--- less-458_orig/lesskey.c	2013-05-07 14:03:52.062104533 +0200
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+++ less-458_work/lesskey.c	2013-05-07 11:21:10.881991855 +0200
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@@ -217,7 +217,15 @@ extern char version[];
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 	void
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 usage(VOID_PARAM)
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 {
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-	fprintf(stderr, "usage: lesskey [-o output] [input]\n");
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+	fprintf(stderr, "usage: lesskey [-o output] [input]\n\n");
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+	fprintf(stderr,
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+			"  -o output\t- specify output file, otherwise $HOME/.less is used\n");
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+	fprintf(stderr,
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+			"  -i input\t- specify input file, otherwise standard input is used\n");
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+	fprintf(stderr,
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+			"  -V\t\t- print lesskey version\n");
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+	fprintf(stderr,
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+			"  -h\t\t- print this help\n");
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 	exit(1);
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 }
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