Fix usage - ploot - simple plotting tools
 (HTM) git clone git://bitreich.org/ploot git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/ploot
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       ---
 (DIR) commit ac4424743683149959a82c1f76e46d5869ca31c2
 (DIR) parent 10701fcb904d7b0ecc8c57e3b61f82e02970b4b0
 (HTM) Author: Michal Josef Špaček <michal.josef.spacek@gmail.com>
       Date:   Tue, 28 Apr 2020 22:38:56 +0200
       
       Fix usage
       
       There is no -3 option.
       
       Diffstat:
         M ploot-text.c                        |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/ploot-text.c b/ploot-text.c
       @@ -12,7 +12,7 @@ char *arg0 = NULL;
        void
        usage(void)
        {
       -        fprintf(stderr, "usage: %s [-123] text\n", arg0);
       +        fprintf(stderr, "usage: %s [-12] text\n", arg0);
                exit(100);
        }