New command line switch "--no-terminal-data-request"

ChangeLog

@@ -1,3 +1,7 @@
+2020-02-25  Markus Gans  <guru.mail@muenster.de>
+	* New command line switch "--no-terminal-data-request" to disable 
+	  font and title determination
+
 2020-02-19  Markus Gans  <guru.mail@muenster.de>
 	* Some small code improvements
 	* SGRoptimizer improved

src/fapplication.cpp

@@ -320,6 +320,8 @@ void FApplication::showParameterUsage()
     << "    Disable cursor optimization\n"
     << "  --no-terminal-detection   "
     << "    Disable terminal detection\n"
+    << "  --no-terminal-data-request"
+    << "    Do not determine terminal font and title\n"
     << "  --no-color-change         "
     << "    Do not redefine the color palette\n"
     << "  --no-sgr-optimizer        "
@@ -418,6 +420,7 @@ void FApplication::cmd_options (const int& argc, char* argv[])
       {C_STR("no-mouse"),                 no_argument,       nullptr,  0 },
       {C_STR("no-optimized-cursor"),      no_argument,       nullptr,  0 },
       {C_STR("no-terminal-detection"),    no_argument,       nullptr,  0 },
+      {C_STR("no-terminal-data-request"), no_argument,       nullptr,  0 },
       {C_STR("no-color-change"),          no_argument,       nullptr,  0 },
       {C_STR("no-sgr-optimizer"),         no_argument,       nullptr,  0 },
       {C_STR("vgafont"),                  no_argument,       nullptr,  0 },
@@ -471,6 +474,9 @@ void FApplication::cmd_options (const int& argc, char* argv[])
       if ( std::strcmp(long_options[idx].name, "no-terminal-detection")  == 0 )
         getStartOptions().terminal_detection = false;
 
+      if ( std::strcmp(long_options[idx].name, "no-terminal-data-request")  == 0 )
+        getStartOptions().terminal_data_request = false;
+
       if ( std::strcmp(long_options[idx].name, "no-color-change")  == 0 )
         getStartOptions().color_change = false;
 

src/fstartoptions.cpp

@@ -38,6 +38,7 @@ FStartOptions::FStartOptions()
   : cursor_optimisation{true}
   , mouse_support{true}
   , terminal_detection{true}
+  , terminal_data_request{true}
   , color_change{true}
   , sgr_optimizer{true}
   , vgafont{false}

src/fterm.cpp

@@ -1846,6 +1846,9 @@ void FTerm::init_captureFontAndTitle()
 {
   // Save the used xterm font and window title
 
+  if ( ! FStartOptions::getFStartOptions().terminal_data_request )
+    return;
+
   xterm->captureFontAndTitle();
   const auto& font = xterm->getFont();
   const auto& title = xterm->getTitle();

src/include/final/fstartoptions.h

@@ -77,11 +77,11 @@ class FStartOptions final
     uInt8 cursor_optimisation   : 1;
     uInt8 mouse_support         : 1;
     uInt8 terminal_detection    : 1;
+    uInt8 terminal_data_request : 1;
     uInt8 color_change          : 1;
     uInt8 sgr_optimizer         : 1;
     uInt8 vgafont               : 1;
     uInt8 newfont               : 1;
-    uInt8                     : 1;  // padding bits
     fc::encoding encoding;
 
 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(UNIT_TEST)