GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/tinfo/lib_acs.c Lines: 0 59 0.0 %
Date: 2017-11-07 Branches: 0 40 0.0 %

Line Branch Exec Source
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/* $OpenBSD: lib_acs.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
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 *                                                                          *
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 * Permission is hereby granted, free of charge, to any person obtaining a  *
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 * copy of this software and associated documentation files (the            *
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 * "Software"), to deal in the Software without restriction, including      *
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 * without limitation the rights to use, copy, modify, merge, publish,      *
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 * distribute, distribute with modifications, sublicense, and/or sell       *
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 * copies of the Software, and to permit persons to whom the Software is    *
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 * furnished to do so, subject to the following conditions:                 *
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 *                                                                          *
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 * The above copyright notice and this permission notice shall be included  *
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 * in all copies or substantial portions of the Software.                   *
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 *                                                                          *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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 *                                                                          *
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 * Except as contained in this notice, the name(s) of the above copyright   *
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 * holders shall not be used in advertising or otherwise to promote the     *
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 * sale, use or other dealings in this Software without prior written       *
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 * authorization.                                                           *
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 ****************************************************************************/
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/****************************************************************************
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 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
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 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
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 *     and: Thomas E. Dickey                        1996-on                 *
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 ****************************************************************************/
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#include <curses.priv.h>
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#include <term.h>		/* ena_acs, acs_chars */
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MODULE_ID("$Id: lib_acs.c,v 1.5 2010/01/12 23:22:06 nicm Exp $")
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#if BROKEN_LINKER || USE_REENTRANT
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#define MyBuffer _nc_prescreen.real_acs_map
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NCURSES_EXPORT_VAR(chtype *)
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_nc_acs_map(void)
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{
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    if (MyBuffer == 0)
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	MyBuffer = typeCalloc(chtype, ACS_LEN);
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    return MyBuffer;
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}
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#undef MyBuffer
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#else
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NCURSES_EXPORT_VAR(chtype) acs_map[ACS_LEN] =
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{
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    0
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};
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#endif
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NCURSES_EXPORT(void)
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_nc_init_acs(void)
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{
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    chtype *fake_map = acs_map;
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    chtype *real_map = SP != 0 ? SP->_acs_map : fake_map;
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    int j;
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    T(("initializing ACS map"));
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    /*
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     * If we're using this from curses (rather than terminfo), we are storing
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     * the mapping information in the SCREEN struct so we can decide how to
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     * render it.
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     */
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    if (real_map != fake_map) {
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	for (j = 1; j < ACS_LEN; ++j) {
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	    real_map[j] = 0;
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	    fake_map[j] = A_ALTCHARSET | j;
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	    if (SP)
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		SP->_screen_acs_map[j] = FALSE;
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	}
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    } else {
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	for (j = 1; j < ACS_LEN; ++j) {
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	    real_map[j] = 0;
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	}
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    }
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    /*
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     * Initializations for a UNIX-like multi-terminal environment.  Use
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     * ASCII chars and count on the terminfo description to do better.
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     */
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    real_map['l'] = '+';	/* should be upper left corner */
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    real_map['m'] = '+';	/* should be lower left corner */
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    real_map['k'] = '+';	/* should be upper right corner */
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    real_map['j'] = '+';	/* should be lower right corner */
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    real_map['u'] = '+';	/* should be tee pointing left */
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    real_map['t'] = '+';	/* should be tee pointing right */
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    real_map['v'] = '+';	/* should be tee pointing up */
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    real_map['w'] = '+';	/* should be tee pointing down */
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    real_map['q'] = '-';	/* should be horizontal line */
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    real_map['x'] = '|';	/* should be vertical line */
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    real_map['n'] = '+';	/* should be large plus or crossover */
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    real_map['o'] = '~';	/* should be scan line 1 */
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    real_map['s'] = '_';	/* should be scan line 9 */
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    real_map['`'] = '+';	/* should be diamond */
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    real_map['a'] = ':';	/* should be checker board (stipple) */
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    real_map['f'] = '\'';	/* should be degree symbol */
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    real_map['g'] = '#';	/* should be plus/minus */
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    real_map['~'] = 'o';	/* should be bullet */
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    real_map[','] = '<';	/* should be arrow pointing left */
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    real_map['+'] = '>';	/* should be arrow pointing right */
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    real_map['.'] = 'v';	/* should be arrow pointing down */
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    real_map['-'] = '^';	/* should be arrow pointing up */
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    real_map['h'] = '#';	/* should be board of squares */
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    real_map['i'] = '#';	/* should be lantern symbol */
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    real_map['0'] = '#';	/* should be solid square block */
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    /* these defaults were invented for ncurses */
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    real_map['p'] = '-';	/* should be scan line 3 */
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    real_map['r'] = '-';	/* should be scan line 7 */
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    real_map['y'] = '<';	/* should be less-than-or-equal-to */
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    real_map['z'] = '>';	/* should be greater-than-or-equal-to */
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    real_map['{'] = '*';	/* should be greek pi */
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    real_map['|'] = '!';	/* should be not-equal */
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    real_map['}'] = 'f';	/* should be pound-sterling symbol */
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    if (ena_acs != NULL) {
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	TPUTS_TRACE("ena_acs");
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	putp(ena_acs);
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    }
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#if NCURSES_EXT_FUNCS
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    /*
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     * Linux console "supports" the "PC ROM" character set by the coincidence
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     * that smpch/rmpch and smacs/rmacs have the same values.  ncurses has
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     * no codepage support (see SCO Merge for an example).  Outside of the
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     * values defined in acsc, there are no definitions for the "PC ROM"
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     * character set (assumed by some applications to be codepage 437), but we
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     * allow those applications to use those codepoints.
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     *
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     * test/blue.c uses this feature.
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     */
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#define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b))
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    if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) &&
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	PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) {
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	size_t i;
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	for (i = 1; i < ACS_LEN; ++i) {
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	    if (real_map[i] == 0) {
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		real_map[i] = i;
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		if (real_map != fake_map) {
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		    if (SP != 0)
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			SP->_screen_acs_map[i] = TRUE;
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		}
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	    }
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	}
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    }
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#endif
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    if (acs_chars != NULL) {
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	size_t i = 0;
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	size_t length = strlen(acs_chars);
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	while (i + 1 < length) {
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	    if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) {
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		real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET;
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		if (SP != 0)
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		    SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE;
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	    }
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	    i += 2;
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	}
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    }
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#ifdef TRACE
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    /* Show the equivalent mapping, noting if it does not match the
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     * given attribute, whether by re-ordering or duplication.
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     */
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    if (USE_TRACEF(TRACE_CALLS)) {
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	size_t n, m;
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	char show[ACS_LEN * 2 + 1];
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	for (n = 1, m = 0; n < ACS_LEN; n++) {
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	    if (real_map[n] != 0) {
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		show[m++] = (char) n;
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		show[m++] = (char) ChCharOf(real_map[n]);
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	    }
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	}
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	show[m] = 0;
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	if (acs_chars == NULL || strcmp(acs_chars, show))
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	    _tracef("%s acs_chars %s",
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		    (acs_chars == NULL) ? "NULL" : "READ",
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		    _nc_visbuf(acs_chars));
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	_tracef("%s acs_chars %s",
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		(acs_chars == NULL)
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		? "NULL"
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		: (strcmp(acs_chars, show)
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		   ? "DIFF"
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		   : "SAME"),
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		_nc_visbuf(show));
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	_nc_unlock_global(tracef);
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    }
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#endif /* TRACE */
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}