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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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} |