youtube/feed: show usage for gopher too - frontends - front-ends for some sites (experiment)
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       ---
 (DIR) commit e6b4a7a9a5af5d5b9c3387799751d696d7fa2222
 (DIR) parent 7f35bd62ab42c3e5da539b6faa1fef27ad331ed9
 (HTM) Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Sun,  2 Jul 2023 13:40:02 +0200
       
       youtube/feed: show usage for gopher too
       
       Diffstat:
         M youtube/feed.c                      |      10 ++++++----
       
       1 file changed, 6 insertions(+), 4 deletions(-)
       ---
 (DIR) diff --git a/youtube/feed.c b/youtube/feed.c
       @@ -1038,16 +1038,18 @@ isvalidchannel(const char *s)
        void
        usage(void)
        {
       -        const char *msg = "Bad Request, path should be the channel id + file extension, for example: UCrbvoMC0zUvPL8vjswhLOSw.json";
       +        const char *line1 = "Bad Request, path should be the channel id + file extension, for example: UCrbvoMC0zUvPL8vjswhLOSw.json";
       +        const char *line2 = "Supported extensions are: [atom|gph|html|json|tsv|txt]";
        
                if (cgimode) {
                        if (godmode) {
       -                        printf("3%s\tErr\t%s\t%s\r\n", msg, server_name, server_port);
       +                        printf("3%s\tErr\t%s\t%s\r\n", line1, server_name, server_port);
       +                        printf("3%s\tErr\t%s\t%s\r\n", line2, server_name, server_port);
                        } else {
                                fputs("Status: 400 Bad Request\r\n", stdout);
                                fputs("Content-Type: text/plain; charset=utf-8\r\n\r\n", stdout);
       -                        printf("400 %s\n", msg);
       -                        fputs("Supported extensions are: [atom|gph|html|json|tsv|txt]\n", stdout);
       +                        printf("400 %s\n", line1);
       +                        printf("\n%s", line2);
                        }
                        exit(0);
                } else {