GREP_COLOR_FILENAME,
        GREP_COLOR_FUNCTION,
        GREP_COLOR_LINENO,
+       GREP_COLOR_COLUMNNO,
        GREP_COLOR_MATCH_CONTEXT,
        GREP_COLOR_MATCH_SELECTED,
        GREP_COLOR_SELECTED,
        int prefix_length;
        regex_t regexp;
        int linenum;
+       int columnnum;
        int invert;
        int ignore_case;
        int status_only;
        int relative;
        int pathname;
        int null_following_name;
+       int only_matching;
        int color;
        int max_depth;
        int funcname;