Adding an ANSI X3.64 SGR optimizer

ChangeLog

@@ -1,3 +1,8 @@
+2019-12-31  Markus Gans  <guru.mail@muenster.de>
+	* The new SGRoptimizer class allows several consecutive parameters 
+	  from the SGR (Select Graphic Rendition) attributes to be combined 
+	  into one
+
 2019-12-23  Markus Gans  <guru.mail@muenster.de>
 	* Correction for height and width alignment in adjustSize()
 	* Better setSize() implementation in some widgets

examples/background-color.cpp

@@ -127,10 +127,13 @@ Background::Background (finalcut::FWidget* parent)
   blue.setValue (0xec);
 
   // Set the initial palette values
+  if ( finalcut::FTerm::canChangeColorPalette() )
+  {
     finalcut::FTerm::setPalette ( finalcut::fc::LightMagenta
                                 , int(red.getValue())
                                 , int(green.getValue())
                                 , int(blue.getValue()) );
+  }
 
   // Quit button
   quit.setGeometry(FPoint(19, 8), FSize(10, 1));
@@ -168,6 +171,9 @@ Background::~Background()  // destructor
 //----------------------------------------------------------------------
 void Background::cb_changed (finalcut::FWidget*, FDataPtr)
 {
+  if ( ! finalcut::FTerm::canChangeColorPalette() )
+    return;
+
   finalcut::FTerm::setPalette ( finalcut::fc::LightMagenta
                               , int(red.getValue())
                               , int(green.getValue())
@@ -179,6 +185,9 @@ void Background::cb_changed (finalcut::FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void Background::cb_choice (finalcut::FWidget*, FDataPtr)
 {
+  if ( ! finalcut::FTerm::canChangeColorPalette() )
+    return;
+
   uChar r{}, g{}, b{};
   FDataPtr data_ptr = color_choice.getItemData();
   RGB* rgb = reinterpret_cast<RGB*>(data_ptr);
@@ -202,7 +211,10 @@ void Background::cb_choice (finalcut::FWidget*, FDataPtr)
 int main (int argc, char* argv[])
 {
   finalcut::FApplication app(argc, argv);
+
+  if ( finalcut::FTerm::canChangeColorPalette() )
     app.setBackgroundColor(finalcut::fc::LightMagenta);
+
   Background dialog(&app);
   app.setMainWidget(&dialog);
   dialog.show();

src/Makefile.am

@@ -62,6 +62,7 @@ libfinal_la_SOURCES = \
 	ftextview.cpp \
 	fvterm.cpp \
 	fevent.cpp \
+	sgr_optimizer.cpp \
 	foptiattr.cpp \
 	foptimove.cpp \
 	ftermbuffer.cpp \
@@ -111,6 +112,7 @@ finalcutinclude_HEADERS = \
 	include/final/fobject.h \
 	include/final/fpoint.h \
 	include/final/fsize.h \
+	include/final/sgr_optimizer.h \
 	include/final/foptiattr.h \
 	include/final/foptimove.h \
 	include/final/ftermbuffer.h \

src/Makefile.clang

@@ -31,6 +31,7 @@ INCLUDE_HEADERS = \
 	fcheckmenuitem.h \
 	fmessagebox.h \
 	ftooltip.h \
+	sgr_optimizer.h \
 	foptiattr.h \
 	foptimove.h \
 	ftermbuffer.h \
@@ -132,6 +133,7 @@ OBJS = \
 	ftermopenbsd.o \
 	ftermlinux.o \
 	fvterm.o \
+	sgr_optimizer.o \
 	foptiattr.o \
 	foptimove.o \
 	ftermbuffer.o \

src/Makefile.gcc

@@ -31,6 +31,7 @@ INCLUDE_HEADERS = \
 	fcheckmenuitem.h \
 	fmessagebox.h \
 	ftooltip.h \
+	sgr_optimizer.h \
 	foptiattr.h \
 	foptimove.h \
 	ftermbuffer.h \
@@ -132,6 +133,7 @@ OBJS = \
 	ftermopenbsd.o \
 	ftermlinux.o \
 	fvterm.o \
+	sgr_optimizer.o \
 	foptiattr.o \
 	foptimove.o \
 	ftermbuffer.o \

src/fapplication.cpp

@@ -320,6 +320,8 @@ void FApplication::showParameterUsage()
     << "     Disable terminal detection\n"
     << "  --no-color-change      "
     << "     Do not redefine the color palette\n"
+    << "  --no-sgr-optimizer     "
+    << "     Do not optimize SGR sequences\n"
     << "  --vgafont              "
     << "     Set the standard vga 8x16 font\n"
     << "  --newfont              "
@@ -415,6 +417,7 @@ void FApplication::cmd_options (const int& argc, char* argv[])
       {C_STR("no-optimized-cursor"),   no_argument,       0,  0 },
       {C_STR("no-terminal-detection"), no_argument,       0,  0 },
       {C_STR("no-color-change"),       no_argument,       0,  0 },
+      {C_STR("no-sgr-optimizer"),      no_argument,       0,  0 },
       {C_STR("vgafont"),               no_argument,       0,  0 },
       {C_STR("newfont"),               no_argument,       0,  0 },
 
@@ -469,6 +472,9 @@ void FApplication::cmd_options (const int& argc, char* argv[])
       if ( std::strcmp(long_options[idx].name, "no-color-change")  == 0 )
         getStartOptions().color_change = false;
 
+      if ( std::strcmp(long_options[idx].name, "no-sgr-optimizer")  == 0 )
+        getStartOptions().sgr_optimizer = false;
+
       if ( std::strcmp(long_options[idx].name, "vgafont")  == 0 )
         getStartOptions().vgafont = true;
 
@@ -819,7 +825,7 @@ void FApplication::closeDropDown()
 {
   // Close the open menu
 
-  if ( mouse && mouse->isMoved() )
+  if ( ! mouse || (mouse && mouse->isMoved()) )
     return;
 
   const auto& mouse_position = mouse->getPos();

src/foptiattr.cpp

@@ -24,6 +24,7 @@
 
 #include "final/fc.h"
 #include "final/foptiattr.h"
+#include "final/fstartoptions.h"
 
 namespace finalcut
 {
@@ -578,6 +579,9 @@ char* FOptiAttr::changeAttribute (FChar*& term, FChar*& next)
     changeAttributeSeparately (term, next);
   }
 
+  if ( FStartOptions::getFStartOptions().sgr_optimizer )
+    sgr_optimizer.optimize();
+
   return attr_buf;
 }
 
@@ -1651,14 +1655,12 @@ inline bool FOptiAttr::switchOff()
 //----------------------------------------------------------------------
 inline bool FOptiAttr::append_sequence (char seq[])
 {
-  if ( seq )
+  if ( ! seq )
-  {
+    return false;
+
   std::strncat (attr_ptr, seq, sizeof(attr_buf) - std::strlen(attr_ptr));
   attr_buf[sizeof(attr_buf) - 1] = '\0';
   return true;
 }
-  else
-    return false;
-}
 
 }  // namespace finalcut

src/fstartoptions.cpp

@@ -39,6 +39,7 @@ FStartOptions::FStartOptions()
   , mouse_support{true}
   , terminal_detection{true}
   , color_change{true}
+  , sgr_optimizer{true}
   , vgafont{false}
   , newfont{false}
   , encoding{fc::UNKNOWN}

src/ftermcapquirks.cpp

@@ -201,9 +201,9 @@ void FTermcapQuirks::linux()
                 "%?%p4%t;5%;m"
                 "%?%p9%t\016%e\017%;");
 
-  TCAP(fc::t_enter_alt_charset_mode) = C_STR("\016");
+  TCAP(fc::t_enter_alt_charset_mode) = C_STR(SO);
-  TCAP(fc::t_exit_alt_charset_mode) = C_STR("\017");
+  TCAP(fc::t_exit_alt_charset_mode) = C_STR(SI);
-  TCAP(fc::t_exit_attribute_mode) = C_STR(CSI "0m\017");
+  TCAP(fc::t_exit_attribute_mode) = C_STR(CSI "0m" SI);
   TCAP(fc::t_exit_bold_mode) = C_STR(CSI "22m");
   TCAP(fc::t_exit_blink_mode) = C_STR(CSI "25m");
   TCAP(fc::t_exit_reverse_mode) = C_STR(CSI "27m");

src/include/final/final.h

@@ -27,6 +27,7 @@
 #define USE_FINAL_H
 
 #include <final/emptyfstring.h>
+#include <final/sgr_optimizer.h>
 #include <final/fkey_map.h>
 #include <final/fapplication.h>
 #include <final/fbuttongroup.h>

src/include/final/foptiattr.h

@@ -23,9 +23,9 @@
 /*  Standalone class
  *  ════════════════
  *
- * ▕▔▔▔▔▔▔▔▔▔▔▔▏
+ *   ▕▔▔▔▔▔▔▔▔▔▔▔▏1     1▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏
- * ▕ FOptiAttr ▏
+ *   ▕ FOptiAttr ▏- - - -▕ SGRoptimizer ▏
- * ▕▁▁▁▁▁▁▁▁▁▁▁▏
+ *   ▕▁▁▁▁▁▁▁▁▁▁▁▏       ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏
  */
 
 #ifndef FOPTIATTR_H
@@ -59,6 +59,7 @@
 #include <algorithm>  // need for std::swap
 
 #include "final/fstring.h"
+#include "final/sgr_optimizer.h"
 
 namespace finalcut
 {
@@ -180,6 +181,8 @@ class FOptiAttr final
 
   private:
     // Typedefs and Enumerations
+    typedef char attributebuffer[SGRoptimizer::ATTR_BUF_SIZE];
+
     typedef struct
     {
       char* cap;
@@ -320,10 +323,12 @@ class FOptiAttr final
     FChar         off{};
     FChar         reset_byte_mask{};
 
+    SGRoptimizer  sgr_optimizer{attr_buf};
+
     int           max_color{1};
     int           attr_without_color{0};
     char*         attr_ptr{attr_buf};
-    char       attr_buf[8192]{'\0'};
+    char          attr_buf[SGRoptimizer::ATTR_BUF_SIZE]{'\0'};
     bool          ansi_default_color{false};
     bool          alt_equal_pc_charset{false};
     bool          monochron{true};

src/include/final/fstartoptions.h

@@ -78,9 +78,10 @@ class FStartOptions final
     uInt8 mouse_support       : 1;
     uInt8 terminal_detection  : 1;
     uInt8 color_change        : 1;
+    uInt8 sgr_optimizer       : 1;
     uInt8 vgafont             : 1;
     uInt8 newfont             : 1;
-    uInt8                     : 2;  // padding bits
+    uInt8                     : 1;  // padding bits
     fc::encoding encoding;
 
 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(UNIT_TEST)

src/include/final/sgr_optimizer.h

@@ -0,0 +1,93 @@
+/***********************************************************************
+* sgr_optimizer.h - Combines SGR (Select Graphic Rendition) attributes *
+*                                                                      *
+* This file is part of the Final Cut widget toolkit                    *
+*                                                                      *
+* Copyright 2019 Markus Gans                                           *
+*                                                                      *
+* The Final Cut is free software; you can redistribute it and/or       *
+* modify it under the terms of the GNU Lesser General Public License   *
+* as published by the Free Software Foundation; either version 3 of    *
+* the License, or (at your option) any later version.                  *
+*                                                                      *
+* The Final Cut is distributed in the hope that it will be useful,     *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of       *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
+* GNU Lesser General Public License for more details.                  *
+*                                                                      *
+* You should have received a copy of the GNU Lesser General Public     *
+* License along with this program.  If not, see                        *
+* <http://www.gnu.org/licenses/>.                                      *
+***********************************************************************/
+
+/*  Standalone class
+ *  ════════════════
+ *
+ * ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏
+ * ▕ SGRoptimizer ▏
+ * ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏
+ */
+
+#ifndef SGR_OPTIMIZER_H
+#define SGR_OPTIMIZER_H
+
+#if !defined (USE_FINAL_H) && !defined (COMPILE_FINAL_CUT)
+  #error "Only <final/final.h> can be included directly."
+#endif
+
+#include <vector>
+
+namespace finalcut
+{
+
+//----------------------------------------------------------------------
+// class SGRoptimizer
+//----------------------------------------------------------------------
+
+class SGRoptimizer final
+{
+  public:
+    // Constants
+    static constexpr std::size_t ATTR_BUF_SIZE{8192};
+
+    // Typedefs
+    typedef char attributebuffer[ATTR_BUF_SIZE];
+
+    // Constructors
+    SGRoptimizer (attributebuffer&);
+
+    // Destructor
+    virtual ~SGRoptimizer();
+
+    // Disable copy constructor
+    SGRoptimizer (const SGRoptimizer&) = delete;
+
+    // Disable assignment operator (=)
+    SGRoptimizer& operator = (const SGRoptimizer&) = delete;
+
+    // Method
+    void optimize();
+
+  private:
+    // Constants
+    static constexpr std::size_t NOT_SET = static_cast<std::size_t>(-1);
+
+    // Methods
+    void findParameter();
+    void combineParameter();
+
+    // Data member
+    attributebuffer& seq;
+
+    struct parameter
+    {
+      std::size_t start;
+      std::size_t end;
+    };
+
+    std::vector<parameter> csi_parameter{};
+};
+
+}  // namespace finalcut
+
+#endif  // SGR_OPTIMIZER_H

src/sgr_optimizer.cpp

@@ -0,0 +1,156 @@
+/***********************************************************************
+* sgr_optimizer.cpp - Combines SGR attributes                          *
+*                                                                      *
+* This file is part of the Final Cut widget toolkit                    *
+*                                                                      *
+* Copyright 2019 Markus Gans                                           *
+*                                                                      *
+* The Final Cut is free software; you can redistribute it and/or       *
+* modify it under the terms of the GNU Lesser General Public License   *
+* as published by the Free Software Foundation; either version 3 of    *
+* the License, or (at your option) any later version.                  *
+*                                                                      *
+* The Final Cut is distributed in the hope that it will be useful,     *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of       *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
+* GNU Lesser General Public License for more details.                  *
+*                                                                      *
+* You should have received a copy of the GNU Lesser General Public     *
+* License along with this program.  If not, see                        *
+* <http://www.gnu.org/licenses/>.                                      *
+***********************************************************************/
+
+#include <cstring>
+
+#include "final/fc.h"
+#include "final/sgr_optimizer.h"
+
+namespace finalcut
+{
+
+//----------------------------------------------------------------------
+// class SGRoptimizer
+//----------------------------------------------------------------------
+
+// constructors and destructor
+//----------------------------------------------------------------------
+SGRoptimizer::SGRoptimizer (attributebuffer& sequence)
+  : seq(sequence)
+{ }
+
+//----------------------------------------------------------------------
+SGRoptimizer::~SGRoptimizer()  // destructor
+{ }
+
+
+// public methods of SGRoptimizer
+//----------------------------------------------------------------------
+void SGRoptimizer::optimize()
+{
+  findParameter();
+  combineParameter();
+}
+
+
+// private methods of SGRoptimizer
+//----------------------------------------------------------------------
+void SGRoptimizer::findParameter()
+{
+  // Find ANSI X3.64 terminal SGR (Select Graphic Rendition) strings
+
+  std::size_t len = std::strlen(seq);
+  csi_parameter.clear();
+
+  if ( len < 6 )
+    return;
+
+  std::size_t start{NOT_SET};
+  bool esc{false}, csi{false};
+
+  // Find SGR parameter
+  for (std::size_t i = 0; i < len; i++)
+  {
+    if ( csi == true )
+    {
+      if ( start == NOT_SET )
+        start = i;
+
+      if ( (seq[i] >= '0' && seq[i] <= '9') || seq[i] == ';' )
+        continue;
+      else if ( seq[i] == 'm')
+      {
+        csi_parameter.push_back({start, i});
+      }
+
+      esc = csi = false;
+      start = NOT_SET;
+    }
+
+    if ( esc && seq[i] == '[' )  // Esc [
+      csi = true;
+
+    if ( seq[i] == ESC[0] )  // Esc
+      esc = true;
+  }
+}
+
+//----------------------------------------------------------------------
+void SGRoptimizer::combineParameter()
+{
+  // Combine SGR (Select Graphic Rendition) attributes
+
+  if ( csi_parameter.size() < 2 )
+    return;
+
+  const auto& first = csi_parameter.front();
+  std::size_t count = 1;
+  std::size_t read_pos{};
+  std::size_t write_pos = first.end;
+
+  if ( first.start == first.end )  // Esc [ m
+  {
+    seq[write_pos] = '0';
+    write_pos++;
+  }
+
+  seq[write_pos] = ';';
+  write_pos++;
+  const auto& begin = csi_parameter.cbegin() + 1;
+  const auto& end = csi_parameter.cend();
+
+  for (auto&& p : std::vector<parameter>(begin, end))
+  {
+    count++;
+
+    for (read_pos = p.start; read_pos <= p.end; read_pos++)
+    {
+      if ( seq[read_pos] == 'm' )
+      {
+        if ( p.start == p.end )  // Esc [ m
+        {
+          seq[write_pos] = '0';
+          write_pos++;
+        }
+
+        if ( count == csi_parameter.size() )
+          seq[write_pos] = 'm';
+        else
+          seq[write_pos] = ';';
+      }
+      else
+        seq[write_pos] = seq[read_pos];
+
+      write_pos++;
+    }
+  }
+
+  while ( seq[write_pos] != '\0' )
+  {
+    seq[write_pos] = seq[read_pos];
+    read_pos++;
+    write_pos++;
+  }
+}
+
+}  // namespace finalcut
+

test/foptiattr-test.cpp

@@ -68,6 +68,7 @@ class FOptiAttrTest : public CPPUNIT_NS::TestFixture
     void classNameTest();
     void noArgumentTest();
     void vga2ansiTest();
+    void sgrOptimizerTest();
     void fakeReverseTest();
     void ansiTest();
     void vt100Test();
@@ -90,6 +91,7 @@ class FOptiAttrTest : public CPPUNIT_NS::TestFixture
     CPPUNIT_TEST (classNameTest);
     CPPUNIT_TEST (noArgumentTest);
     CPPUNIT_TEST (vga2ansiTest);
+    CPPUNIT_TEST (sgrOptimizerTest);
     CPPUNIT_TEST (fakeReverseTest);
     CPPUNIT_TEST (ansiTest);
     CPPUNIT_TEST (vt100Test);
@@ -138,6 +140,149 @@ void FOptiAttrTest::noArgumentTest()
   delete ch;
 }
 
+//----------------------------------------------------------------------
+void FOptiAttrTest::sgrOptimizerTest()
+{
+  // Test with FOptiAttr
+  // -------------------
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = true;
+  finalcut::FOptiAttr oa;
+  oa.setDefaultColorSupport();  // ANSI default color
+  oa.setMaxColor (8);
+  oa.setNoColorVideo (3);       // Avoid standout (1) + underline mode (2)
+  oa.set_enter_bold_mode (C_STR(CSI "1m"));
+  oa.set_exit_bold_mode (C_STR(CSI "22m"));
+  oa.set_enter_dim_mode (C_STR(CSI "2m"));
+  oa.set_exit_dim_mode (C_STR(CSI "22m"));
+  oa.set_enter_italics_mode (C_STR(CSI "3m"));
+  oa.set_exit_italics_mode (C_STR(CSI "23m"));
+  oa.set_enter_underline_mode  (0);
+  oa.set_exit_underline_mode  (0);
+  oa.set_enter_blink_mode (C_STR(CSI "5m"));
+  oa.set_exit_blink_mode (C_STR(CSI "25m"));
+  oa.set_enter_reverse_mode (C_STR(CSI "7m"));
+  oa.set_exit_reverse_mode (C_STR(CSI "27m"));
+  oa.set_enter_standout_mode  (0);
+  oa.set_exit_standout_mode  (0);
+  oa.set_enter_secure_mode (C_STR(CSI "8m"));
+  oa.set_exit_secure_mode (C_STR(CSI "28m"));
+  oa.set_enter_protected_mode (0);
+  oa.set_exit_protected_mode (C_STR(CSI "0m"));
+  oa.set_enter_crossed_out_mode (C_STR(CSI "9m"));
+  oa.set_exit_crossed_out_mode (C_STR(CSI "29m"));
+  oa.set_enter_dbl_underline_mode (C_STR(CSI "21m"));
+  oa.set_exit_dbl_underline_mode (C_STR(CSI "24m"));
+  oa.set_set_attributes (C_STR(CSI "0;10"
+                               "%?%p3%t;7%;"
+                               "%?%p4%t;5%;"
+                               "%?%p5%t;2%;"
+                               "%?%p6%t;1%;"
+                               "%?%p7%t;8%;"
+                               "%?%p9%t;11%;m"));
+  oa.set_exit_attribute_mode (C_STR(CSI "0m"));
+  oa.set_enter_alt_charset_mode (C_STR(CSI "11m"));
+  oa.set_exit_alt_charset_mode (C_STR(CSI "10m"));
+  oa.set_enter_pc_charset_mode (C_STR(CSI "11m"));
+  oa.set_exit_pc_charset_mode (C_STR(CSI "10m"));
+  oa.set_a_foreground_color (C_STR(CSI "3%p1%dm"));
+  oa.set_a_background_color (C_STR(CSI "4%p1%dm"));
+  oa.set_foreground_color (0);
+  oa.set_background_color (0);
+  oa.set_term_color_pair (0);
+  oa.set_orig_pair (C_STR(CSI "39;49m"));
+  oa.set_orig_orig_colors (0);
+  oa.initialize();
+
+  finalcut::FChar* from = new finalcut::FChar();
+  finalcut::FChar* to = new finalcut::FChar();
+  CPPUNIT_ASSERT ( oa.changeAttribute(from, to) == 0 );
+
+  // Blue text on white background + bold + dim + italic
+  to->fg_color = finalcut::fc::Blue;
+  to->bg_color = finalcut::fc::White;
+  to->attr.bit.bold = true;
+  to->attr.bit.dim = true;
+  to->attr.bit.italic = true;
+  CPPUNIT_ASSERT ( *from != *to );
+  CPPUNIT_ASSERT_CSTRING ( oa.changeAttribute(from, to)
+                         , C_STR(CSI "0;10;2;1;3;34;47m") );
+  CPPUNIT_ASSERT ( *from == *to );
+  CPPUNIT_ASSERT ( oa.changeAttribute(from, to) == 0 );
+
+  // Yellow text on Black Yellow + bold
+  to->fg_color = finalcut::fc::Yellow;
+  to->bg_color = finalcut::fc::Black;
+  to->attr.bit.bold = true;
+  to->attr.bit.dim = false;
+  to->attr.bit.italic = false;
+  CPPUNIT_ASSERT ( *from != *to );
+  CPPUNIT_ASSERT_CSTRING ( oa.changeAttribute(from, to)
+                         , C_STR(CSI "0;10;1;33;40m") );
+  CPPUNIT_ASSERT ( *from == *to );
+  CPPUNIT_ASSERT ( oa.changeAttribute(from, to) == 0 );
+
+
+  // Test only the optimizer
+  // -----------------------
+  char buffer[8192] = { CSI "0;10m" CSI "11m"  CSI "36m" CSI "44m" };
+  finalcut::SGRoptimizer sgr_optimizer(buffer);
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;10;11;36;44m") );
+
+  std::strcpy(buffer, CSI "0;1m" CSI "34m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;1;34m") );
+
+  std::strcpy(buffer, CSI "m" CSI "34m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;34m") );
+
+  std::strcpy(buffer, CSI "1m" CSI "m" CSI "45m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "1;0;45m") );
+
+  std::strcpy(buffer, CSI "47m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "47m") );
+
+  std::strcpy(buffer, CSI "47m" CSI "m" CSI "1m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "47;0;1m") );
+
+  std::strcpy(buffer, CSI "49m" CSI "m" CSI "0m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "49;0;0m") );
+
+  std::strcpy(buffer, CSI "m" CSI "m" CSI "m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;0;0m") );
+
+  std::strcpy(buffer, CSI "m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "m") );
+
+  std::strcpy(buffer, CSI "0;10;1;7m" CSI "3m" CSI "39m" CSI "49m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;10;1;7;3;39;49m") );
+
+  std::strcpy(buffer, CSI "m" CSI "38;5;20m" CSI "48;5;229m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;38;5;20;48;5;229m") );
+
+  std::strcpy(buffer, CSI "m" CSI "1m" CSI "2m" CSI "3m" CSI "4m"
+                      CSI "5m" CSI "7m" CSI "8m" CSI "9m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;1;2;3;4;5;7;8;9m") );
+
+  std::strcpy(buffer, CSI "0m" CSI "46;36;1m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;46;36;1m") );
+
+  std::strcpy(buffer, CSI "m" CSI "38;2;0;139;139m" CSI "48;2;240;255;240m");
+  sgr_optimizer.optimize();
+  CPPUNIT_ASSERT_CSTRING ( buffer, C_STR(CSI "0;38;2;0;139;139;48;2;240;255;240m") );
+}
+
 //----------------------------------------------------------------------
 void FOptiAttrTest::vga2ansiTest()
 {
@@ -163,6 +308,7 @@ void FOptiAttrTest::vga2ansiTest()
 //----------------------------------------------------------------------
 void FOptiAttrTest::fakeReverseTest()
 {
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.setDefaultColorSupport();  // ANSI default color
   oa.setMaxColor (8);
@@ -251,6 +397,7 @@ void FOptiAttrTest::ansiTest()
 {
   // Simulate an ansi terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.setDefaultColorSupport();  // ANSI default color
   oa.setMaxColor (8);
@@ -718,6 +865,7 @@ void FOptiAttrTest::vt100Test()
 {
   // Simulate a vt100 terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.unsetDefaultColorSupport();  // No ANSI default color
   oa.setMaxColor (1);
@@ -1179,6 +1327,7 @@ void FOptiAttrTest::xtermTest()
 {
   // Simulate an xterm-256color terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.setDefaultColorSupport();  // ANSI default color
   oa.setMaxColor (256);
@@ -1660,6 +1809,7 @@ void FOptiAttrTest::rxvtTest()
 {
   // Simulate an rxvt terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.setDefaultColorSupport();  // ANSI default color
   oa.setMaxColor (8);
@@ -2131,6 +2281,7 @@ void FOptiAttrTest::linuxTest()
 {
   // Simulate a Linux terminal with 16 colors
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.setDefaultColorSupport();  // ANSI default color
   oa.setMaxColor (16);
@@ -2605,6 +2756,7 @@ void FOptiAttrTest::puttyTest()
 {
   // Simulate a putty-256color terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.unsetDefaultColorSupport();  // No ANSI default color
   oa.setMaxColor (256);
@@ -3087,6 +3239,7 @@ void FOptiAttrTest::teratermTest()
 {
   // Simulate a Tera Term terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.unsetDefaultColorSupport();  // No ANSI default color
   oa.setMaxColor (16);
@@ -3553,6 +3706,7 @@ void FOptiAttrTest::ibmColorTest()
 {
   // Simulate IBM color definitions
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   oa.unsetDefaultColorSupport();  // No ANSI default color
   oa.setMaxColor (8);
@@ -3991,6 +4145,7 @@ void FOptiAttrTest::wyse50Test()
 {
   // Simulate an Wyse-50 terminal
 
+  finalcut::FStartOptions::getFStartOptions().sgr_optimizer = false;
   finalcut::FOptiAttr oa;
   finalcut::FOptiAttr::termEnv optiattr_env =
   {