Re: bin/39883: tput support for setaf terminfo sequence is broken

["Mikel Ward" <mikel%mikelward.com@localhost>]

tgetnum(3) and tgetstr(3) both say "setaf" is an unknown attribute,
but if you skip those and just call tgetstr(3) as tput(1) does, you
end up getting a string back!

-----
tstr.c
-----
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termcap.h>

int main(int argc, char **argv)
{
        const char *attr;
        const char *term;
        char *tstr;
        int id;
        char termbuf[1024];
        /*char attrbuf[1024];*/
        char *attrbuf = malloc(1024);
        char *oldattrbuf = attrbuf;

        /*attr = "setaf";*/
        if (argc < 2) {
                fprintf(stderr, "Usage: tstr <attribute>\n");
                exit(2);
        }
        attr = argv[1];

        memset(attrbuf, 0, 1024);

        term = getenv("TERM");
        if (term == NULL) {
                fprintf(stderr, "Cannot get TERM environment variable\n");
                exit(1);
        }

        if (tgetent(termbuf, term) != 1) {
                fprintf(stderr, "Cannot get termcap entry for %s\n", term);
                exit(1);
        }

        id = tgetnum(attr);
        if (id == -1) {
                int flag;

                flag = tgetflag(attr);

                if (flag != 1) {
                        fprintf(stderr, "Warning: %s is not a known
attribute\n", attr);
                }
                else {
                        fprintf(stderr, "Can't happen: tgetnum and
tgetflag disagree\n");
                        exit(1);
                }
        }

        tstr = tgetstr(attr, (char **)&attrbuf);
        if (tstr == NULL) {
                fprintf(stderr, "string is null\n");
                exit(1);
        }

        fprintf(stdout, "%s", tstr);
        exit(0);
}
-----

# cc -g -o tstr tstr.c -ltermcap
# ./tstr setaf | od -c
Warning: setaf is not a known attribute
0000000  033   [   m
0000003