Fri Jul 5 12:22:51 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
This commit is contained in:
Roland McGrath
parent
a0da2d51da
commit
66219c0794
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@ -5,6 +5,7 @@ Fri Jul 5 17:34:47 1996 Miles Bader <miles@gnu.ai.mit.edu>
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* login/pututline_r.c (pututline_r): Since we assign RESULT from
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lseek now, check that it's >= 0, not == 0.
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Fri Jul 5 12:22:51 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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Wed Jul 3 13:28:04 1996 Miles Bader <miles@gnu.ai.mit.edu>
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* login/login.c (login): Make a copy of *UT, fill in various
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@ -14,7 +15,6 @@ Wed Jul 3 13:28:04 1996 Miles Bader <miles@gnu.ai.mit.edu>
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* login/getutline_r.c (getutline_r): When we return ESRCH, mark
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UTMP_DATA->ubuf invalid (by setting UTMP_DATA->loc_utmp to 0).
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Fri Jul 5 12:22:51 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* hurd/hurdsig.c (_hurd_internal_post_signal): In case of handled
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signal during critical section doing interruptible RPC, if
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17
FAQ
17
FAQ
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@ -1,7 +1,7 @@
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Frequently Asked Question on GNU C Library
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As every FAQ this one also tries to answer questions the user might have
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when using the pacakge. Please make sure you read this before sending
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when using the package. Please make sure you read this before sending
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questions or bug reports to the maintainers.
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The GNU C Library is very complex. The building process exploits the
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@ -39,6 +39,9 @@ please let me know.
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[Q9] ``Why does getlogin() always return NULL on my Linux box?''
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[Q10] ``Where are the DST_* constants found in <sys/time.h> on many
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systems?''
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q1] ``What systems does the GNU C Library run on?''
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@ -259,6 +262,18 @@ means to support the new techniques later.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q10] ``Where are the DST_* constants found in <sys/time.h> on many
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systems?''
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[A10] {UD} These constants come from the old BSD days and are not used
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today anymore (even the Linux based glibc does not implement the handling
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although the cosntants are defined).
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Instead GNU libc contains the zone database handling and compatibility
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code for POSIX TZ environment variable handling.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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Answers were given by:
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{UD} Ulrich Drepper, <drepper@cygnus.com>
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@ -28,8 +28,8 @@ struct keyword_t ;
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#define MIN_WORD_LENGTH 3
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#define MAX_WORD_LENGTH 17
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#define MIN_HASH_VALUE 3
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#define MAX_HASH_VALUE 185
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/* maximum key range = 183, duplicates = 0 */
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#define MAX_HASH_VALUE 132
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/* maximum key range = 130, duplicates = 0 */
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#ifdef __GNUC__
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inline
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@ -39,19 +39,19 @@ hash (register const char *str, register int len)
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{
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static const unsigned char asso_values[] =
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{
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 186, 186, 186,
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186, 186, 186, 186, 186, 186, 186, 0, 0, 0,
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0, 0, 186, 0, 186, 186, 0, 186, 0, 35,
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186, 186, 0, 0, 0, 5, 186, 186, 186, 0,
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186, 186, 186, 186, 186, 15, 186, 0, 0, 5,
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15, 10, 55, 30, 15, 75, 186, 20, 5, 40,
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10, 0, 0, 186, 35, 30, 0, 70, 186, 10,
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20, 75, 186, 186, 186, 186, 186, 186,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 133, 133, 133,
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133, 133, 133, 133, 133, 133, 133, 0, 0, 0,
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0, 0, 133, 0, 133, 133, 0, 133, 0, 20,
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133, 133, 0, 0, 0, 5, 133, 133, 133, 5,
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133, 133, 133, 133, 133, 5, 133, 0, 60, 0,
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15, 10, 20, 40, 5, 20, 133, 0, 45, 40,
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10, 0, 0, 133, 15, 50, 0, 30, 0, 10,
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15, 15, 133, 133, 133, 133, 133, 133,
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};
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register int hval = len;
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@ -59,16 +59,16 @@ hash (register const char *str, register int len)
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{
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default:
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case 5:
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hval += asso_values[(int) str[4]];
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hval += asso_values[str[4]];
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case 4:
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case 3:
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case 2:
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hval += asso_values[(int) str[1]];
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hval += asso_values[str[1]];
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case 1:
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hval += asso_values[(int) str[0]];
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hval += asso_values[str[0]];
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break;
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}
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return hval + asso_values[(int) str[len - 1]];
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return hval + asso_values[str[len - 1]];
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}
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#ifdef __GNUC__
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@ -86,113 +86,104 @@ locfile_hash (register const char *str, register int len)
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{"LC_TIME", tok_lc_time, 0},
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{"LC_CTYPE", tok_lc_ctype, 0},
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{"",},
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{"alpha", tok_alpha, 0},
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{"t_fmt", tok_t_fmt, 0},
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{"LC_MESSAGES", tok_lc_messages, 0},
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{"",}, {"",},
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{"",},
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{"charconv", tok_charconv, 0},
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{"UNDEFINED", tok_undefined, 0},
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{"LC_NUMERIC", tok_lc_numeric, 0},
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{"",}, {"",},
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{"position", tok_position, 0},
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{"",},
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{"t_fmt", tok_t_fmt, 0},
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{"",},
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{"collating-element", tok_collating_element, 0},
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{"positive_sign", tok_positive_sign, 0},
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{"",},
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{"abmon", tok_abmon, 0},
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{"collating-symbol", tok_collating_symbol, 0},
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{"",}, {"",}, {"",},
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{"cntrl", tok_cntrl, 0},
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{"",}, {"",},
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{"backward", tok_backward, 0},
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{"",},
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{"d_fmt", tok_d_fmt, 0},
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{"",}, {"",}, {"",},
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{"p_sep_by_space", tok_p_sep_by_space, 0},
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{"position", tok_position, 0},
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{"copy", tok_copy, 0},
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{"print", tok_print, 0},
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{"",},
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{"toupper", tok_toupper, 0},
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{"negative_sign", tok_negative_sign, 0},
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{"",},
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{"LC_COLLATE", tok_lc_collate, 0},
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{"LC_MONETARY", tok_lc_monetary, 0},
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{"positive_sign", tok_positive_sign, 0},
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{"",},
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{"d_fmt", tok_d_fmt, 0},
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{"",}, {"",},
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{"era", tok_era, 0},
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{"n_sep_by_space", tok_n_sep_by_space, 0},
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{"blank", tok_blank, 0},
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{"p_sep_by_space", tok_p_sep_by_space, 0},
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{"LC_COLLATE", tok_lc_collate, 0},
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{"noexpr", tok_noexpr, 0},
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{"tolower", tok_tolower, 0},
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{"mon", tok_mon, 0},
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{"day", tok_day, 0},
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{"era_t_fmt", tok_era_t_fmt, 0},
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{"space", tok_space, 0},
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{"",},
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{"mon_thousands_sep", tok_mon_thousands_sep, 0},
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{"thousands_sep", tok_thousands_sep, 0},
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{"",},
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{"alt_digits", tok_alt_digits, 0},
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{"",},
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{"punct", tok_punct, 0},
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{"LC_MONETARY", tok_lc_monetary, 0},
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{"comment_char", tok_comment_char, 0},
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{"",},
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{"charclass", tok_charclass, 0},
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{"t_fmt_ampm", tok_t_fmt_ampm, 0},
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{"p_sign_posn", tok_p_sign_posn, 0},
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{"charmap", tok_charmap, 0},
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{"n_sep_by_space", tok_n_sep_by_space, 0},
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{"digit", tok_digit, 0},
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{"order_start", tok_order_start, 0},
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{"forward", tok_forward, 0},
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{"negative_sign", tok_negative_sign, 0},
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{"",},
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{"nostr", tok_nostr, 0},
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{"yesstr", tok_yesstr, 0},
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{"d_t_fmt", tok_d_t_fmt, 0},
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{"",},
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{"era_d_fmt", tok_era_d_fmt, 0},
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{"",},
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{"alpha", tok_alpha, 0},
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{"era_d_t_fmt", tok_era_d_t_fmt, 0},
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{"",},
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{"mon", tok_mon, 0},
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{"order_end", tok_order_end, 0},
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{"t_fmt_ampm", tok_t_fmt_ampm, 0},
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{"xdigit", tok_xdigit, 0},
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{"mon_thousands_sep", tok_mon_thousands_sep, 0},
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{"",}, {"",}, {"",},
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{"collating-symbol", tok_collating_symbol, 0},
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{"yesexpr", tok_yesexpr, 0},
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{"era_year", tok_era_year, 0},
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{"charclass", tok_charclass, 0},
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{"upper", tok_upper, 0},
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{"p_sign_posn", tok_p_sign_posn, 0},
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{"",},
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{"thousands_sep", tok_thousands_sep, 0},
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{"",},
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{"graph", tok_graph, 0},
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{"",},
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{"mon_decimal_point", tok_mon_decimal_point, 0},
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{"p_cs_precedes", tok_p_cs_precedes, 0},
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{"",},
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{"punct", tok_punct, 0},
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{"space", tok_space, 0},
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{"n_sign_posn", tok_n_sign_posn, 0},
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{"forward", tok_forward, 0},
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{"",},
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{"decimal_point", tok_decimal_point, 0},
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{"",},
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{"from", tok_from, 0},
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{"lower", tok_lower, 0},
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{"order_start", tok_order_start, 0},
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{"",},
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{"",}, {"",},
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{"n_cs_precedes", tok_n_cs_precedes, 0},
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{"copy", tok_copy, 0},
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{"nostr", tok_nostr, 0},
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{"",},
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{"abmon", tok_abmon, 0},
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{"escape_char", tok_escape_char, 0},
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{"",}, {"",}, {"",},
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{"alnum", tok_alnum, 0},
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{"",},
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{"d_t_fmt", tok_d_t_fmt, 0},
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{"day", tok_day, 0},
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{"order_end", tok_order_end, 0},
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{"digit", tok_digit, 0},
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{"",}, {"",}, {"",}, {"",},
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{"graph", tok_graph, 0},
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{"int_curr_symbol", tok_int_curr_symbol, 0},
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{"",}, {"",},
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{"backward", tok_backward, 0},
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{"",},
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{"abday", tok_abday, 0},
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{"",}, {"",}, {"",}, {"",},
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{"currency_symbol", tok_currency_symbol, 0},
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{"frac_digits", tok_frac_digits, 0},
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{"",},
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{"grouping", tok_grouping, 0},
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{"",},
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{"currency_symbol", tok_currency_symbol, 0},
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{"cntrl", tok_cntrl, 0},
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{"",}, {"",}, {"",}, {"",},
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{"int_curr_symbol", tok_int_curr_symbol, 0},
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{"blank", tok_blank, 0},
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{"",}, {"",}, {"",}, {"",},
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{"int_frac_digits", tok_int_frac_digits, 0},
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{"",}, {"",}, {"",}, {"",},
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{"alt_digits", tok_alt_digits, 0},
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{"",}, {"",}, {"",}, {"",},
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{"am_pm", tok_am_pm, 0},
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{"",}, {"",}, {"",}, {"",},
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{"alnum", tok_alnum, 0},
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{"",},
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{"mon_grouping", tok_mon_grouping, 0},
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{"",}, {"",}, {"",},
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{"xdigit", tok_xdigit, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"am_pm", tok_am_pm, 0},
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{"yesstr", tok_yesstr, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"from", tok_from, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"",},
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{"upper", tok_upper, 0},
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{"frac_digits", tok_frac_digits, 0},
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{"yesexpr", tok_yesexpr, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"abday", tok_abday, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"era_year", tok_era_year, 0},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
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{"",}, {"",}, {"",},
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{"int_frac_digits", tok_int_frac_digits, 0},
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};
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if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
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