t.c

#include <sys/types.h>

#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void
chk(f, str)
        char *f, *str;
{
        char *s;
        int ch, l, ok, pc;

        if (freopen(f, "r", stdin) == NULL) {
                fprintf(stderr, "%s: %s\n", f, strerror(errno));
                exit (1);
        }

        for (l = 1, ok = 1, s = str; (ch = getchar()) != EOF;) {
                if (ch == '\n')
                        ++l;
                if (!ok || ch != *s) {
                        s = str;
                        ok = !isalpha(ch) && !isdigit(ch) && ch != '_';
                        continue;
                }
                if (*++s != '\0')
                        continue;

                /* Match. */
                printf("%s: %d: %s", f, l, str);
                for (pc = 1; (ch = getchar()) != EOF;) {
                        switch (ch) {
                        case '(':
                                ++pc;
                                break;
                        case ')':
                                --pc;
                                break;
                        case '\n':
                                ++l;
                                break;
                        }
                        if (ch == '\n')
                                putchar(' ');
                        else
                                putchar(ch);
                        if (pc <= 0) {
                                putchar('\n');
                                break;
                        }
                }
                s = str;
        }
}

int
main(int argc, char *argv[])
{
        int r;

        for (r = 0; *++argv != NULL;) {
                chk(*argv, "F_ISSET(");
                chk(*argv, "F_CLR(");
                chk(*argv, "F_SET(");
        }
        return (0);
}

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