Simplify home_z_safely, respect HOME_AFTER_DEACTIVATE

Marlin/src/core/language.h

@@ -205,7 +205,6 @@
 #define STR_ERR_COLD_EXTRUDE_STOP           " cold extrusion prevented"
 #define STR_ERR_LONG_EXTRUDE_STOP           " too long extrusion prevented"
 #define STR_ERR_HOTEND_TOO_COLD             "Hotend too cold"
-#define STR_ERR_Z_HOMING_SER                "Home XY first"
 #define STR_ERR_EEPROM_WRITE                "Error writing to EEPROM!"
 
 #define STR_FILAMENT_CHANGE_HEAT_LCD        "Press button to heat nozzle"

Marlin/src/gcode/calibrate/G28.cpp

@@ -115,13 +115,8 @@
 #if ENABLED(Z_SAFE_HOMING)
 
   inline void home_z_safely() {
-
+    // Disallow Z homing if X or Y homing is needed
-    // Disallow Z homing if X or Y are unknown
+    if (axis_unhomed_error(_BV(X_AXIS) | _BV(Y_AXIS))) return;
-    if (!TEST(axis_known_position, X_AXIS) || !TEST(axis_known_position, Y_AXIS)) {
-      LCD_MESSAGEPGM(MSG_ERR_Z_HOMING);
-      SERIAL_ECHO_MSG(STR_ERR_Z_HOMING_SER);
-      return;
-    }
 
     if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("home_z_safely >>>");
 

Marlin/src/lcd/language/language_an.h

@@ -165,7 +165,6 @@ namespace Language_an {
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY                 = _UxGT("Error de temperatura");
   PROGMEM Language_Str MSG_ERR_MAXTEMP                     = _UxGT("Error: Temp Max");
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Error: Temp Min");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY first");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPRESORA ATURADA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Per favor reinic.");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d");

Marlin/src/lcd/language/language_ca.h

@@ -156,7 +156,6 @@ namespace Language_ca {
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY                 = _UxGT("THERMAL RUNAWAY");
   PROGMEM Language_Str MSG_ERR_MAXTEMP                     = _UxGT("Err: TEMP MAXIMA");
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Err: TEMP MINIMA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY primer");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPRESSORA PARADA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Reinicieu");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_cz.h

@@ -413,7 +413,6 @@ namespace Language_cz {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("NÍZ. TEPL. PODL.");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err: MAXTEMP KOMORA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err: MINTEMP KOMORA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Domů XY první");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("TISK. ZASTAVENA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Proveďte reset");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d");

Marlin/src/lcd/language/language_da.h

@@ -141,7 +141,6 @@ namespace Language_da {
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Fejl: Min temp");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_BED                 = _UxGT("Fejl: Maks Plade temp");
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Fejl: Min Plade temp");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY først");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("PRINTER STOPPET");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Reset Venligst");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // Kun et bogstav

Marlin/src/lcd/language/language_de.h

@@ -404,7 +404,6 @@ namespace Language_de {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("BETT ") LCD_STR_THERMOMETER _UxGT(" UNTERSCHRITTEN");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err:Gehäuse max Temp");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err:Gehäuse min Temp");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Vorher XY homen");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("DRUCKER GESTOPPT");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Bitte neustarten");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("t"); // One character only

Marlin/src/lcd/language/language_en.h

@@ -455,7 +455,6 @@ namespace Language_en {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err: MINTEMP BED");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err: MAXTEMP CHAMBER");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err: MINTEMP CHAMBER");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY First");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("PRINTER HALTED");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Please Reset");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_es.h

@@ -424,7 +424,6 @@ namespace Language_es {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err:TEMP. MIN CAMA");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err:TEMP. MÁX CÁMARA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err:TEMP. MIN CÁMARA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Origen XY Primero");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPRESORA DETENIDA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Por favor, reinicie");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_eu.h

@@ -243,7 +243,6 @@ namespace Language_eu {
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Err: Tenp Minimoa");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_BED                 = _UxGT("Err: Ohe Tenp Max");
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err: Ohe Tenp Min");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Etxera XY lehenengo");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("INPRIMA. GELDIRIK");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Berrabia. Mesedez");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_fr.h

@@ -399,7 +399,6 @@ namespace Language_fr {
   PROGMEM Language_Str MSG_THERMAL_RUNAWAY                 = _UxGT("Err THERMIQUE");
   PROGMEM Language_Str MSG_ERR_MAXTEMP                     = _UxGT("Err TEMP. MAX");
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Err TEMP. MIN");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Origine XY Premier");
 
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPR. STOPPÉE");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Redémarrer SVP");

Marlin/src/lcd/language/language_gl.h

@@ -446,7 +446,6 @@ namespace Language_gl {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Erro:TEMP MÍN CAMA");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Erro:TEMP MÁX CÁMARA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Erro:TEMP MÍN CÁMARA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Orixe XY Primeiro");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPRESORA DETIDA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Debe reiniciar!");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_hu.h

@@ -448,7 +448,6 @@ namespace Language_hu {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Hiba: MIN ÁGY HÖFOK");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Hiba: MAX KAMRA HÖFOK");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Hiba: MIN KAMRA HÖFOK");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("XY Kezdöpont");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("A NYOMTATÓ LEFAGYOTT");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Indítsd újra!");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("n"); // Csak egy karakter

Marlin/src/lcd/language/language_it.h

@@ -453,7 +453,6 @@ namespace Language_it {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err: TEMP MIN PIATTO");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err: TEMP MAX CAMERA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err: TEMP MIN CAMERA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY prima");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("STAMPANTE FERMATA");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Riavviare prego");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("g"); // Un solo carattere

Marlin/src/lcd/language/language_jp_kana.h

@@ -183,7 +183,6 @@ namespace Language_jp_kana {
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("エラー:サイテイオンミマン");          // "Err: MINTEMP"
   PROGMEM Language_Str MSG_ERR_MAXTEMP_BED                 = _UxGT("エラー:ベッド サイコウオンチョウカ");    // "Err: MAXTEMP BED"
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("エラー:ベッド サイテイオンミマン");     // "Err: MINTEMP BED"
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("サキニ XY ヲフッキサセテクダサイ");     // "Home XY first"
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("プリンターハテイシシマシタ");         // "PRINTER HALTED"
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("リセットシテクダサイ");              // "Please reset"
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d");                          // One character only

Marlin/src/lcd/language/language_nl.h

@@ -163,7 +163,6 @@ namespace Language_nl {
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Err: Min. temp");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_BED                 = _UxGT("Err: Max.tmp bed");
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err: Min.tmp bed");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY Eerst");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("PRINTER GESTOPT");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Reset A.U.B.");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); //  One character only. Keep English standard

Marlin/src/lcd/language/language_pl.h

@@ -394,7 +394,6 @@ namespace Language_pl {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Błąd: MINTEMP STÓŁ");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Błąd: MAXTEMP KOMORA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Błąd: MINTEMP KOMORA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Najpierw Home XY");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("Drukarka zatrzym.");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Proszę zresetować");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_pt_br.h

@@ -360,7 +360,6 @@ namespace Language_pt_br {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Erro:Temp Mesa Mín");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Erro:Temp Câmara Máx");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Erro:Temp Câmara Min");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY Primeiro");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("IMPRESSORA PAROU");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Favor resetar");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d");

Marlin/src/lcd/language/language_ro.h

@@ -451,7 +451,6 @@ namespace Language_ro {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Err: MINTEMP BED");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Err: MAXTEMP CHAMBER");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Err: MINTEMP CHAMBER");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Home XY First");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("PRINTER HALTED");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Please Reset");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d"); // One character only

Marlin/src/lcd/language/language_ru.h

@@ -536,7 +536,6 @@ namespace Language_ru {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Ошибка: Т стола мин.");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Ошибка:Т камеры макс");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Ошибка:Т камеры мин.");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Паркуй XY сначала");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("ПРИНТЕР ОСТАНОВЛЕН");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Сделайте сброс");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("д"); // One character only

Marlin/src/lcd/language/language_sk.h

@@ -439,7 +439,6 @@ namespace Language_sk {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Chyba: MINTEMP PODL.");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Chyba: MAXTEMP KOMO.");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Chyba: MINTEMP KOMO.");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Najskôr os XY domov");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("TLAČIAREŇ ZASTAVENÁ");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Reštartuje ju");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("d");

Marlin/src/lcd/language/language_tr.h

@@ -423,7 +423,6 @@ namespace Language_tr {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Hata: MIN.SIC. TABLA");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("Hata: MAX.SIC ODA");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("Hata: MIN.SIC ODA");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Önce XY Sıfırla");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("YAZICI DURDURULDU");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Lütfen Resetleyin");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("G"); // One character only

Marlin/src/lcd/language/language_uk.h

@@ -533,7 +533,6 @@ namespace Language_uk {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("МІНІМАЛЬНА Т") LCD_STR_DEGREE _UxGT(" СТОЛУ");
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("ПЕРЕГРІВ КАМЕРИ");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("МІНІМАЛЬНА Т") LCD_STR_DEGREE _UxGT(" КАМЕРИ");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Першим дім по XY");
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("ПРИНТЕР ЗУПИНЕНО");
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Перезавантажте");
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("д"); // One character only

Marlin/src/lcd/language/language_vi.h

@@ -335,7 +335,6 @@ namespace Language_vi {
   PROGMEM Language_Str MSG_ERR_MINTEMP                     = _UxGT("Điều sai: nhiệt độ tối thiểu");         // Err: MINTEMP
   PROGMEM Language_Str MSG_ERR_MAXTEMP_BED                 = _UxGT("Điều sai: nhiệt độ bàn tối đa");        // Err: MAXTEMP BED
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("Điều sai: nhiệt độ bàn tối thiểu");     // Err: MINTEMP BED
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("Về nhà XY Trước");                      // Home XY First
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("MÁY IN ĐÃ DỪNG LẠI");                   // PRINTER HALTED
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("Xin bặt lại");                          // Please reset
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("n");                                    // d - ngày - One character only

Marlin/src/lcd/language/language_zh_CN.h

@@ -444,7 +444,6 @@ namespace Language_zh_CN {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("错误：最低热床温度");     //"Err: MINTEMP BED"
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("错误：最高机箱温度");
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("错误：最低机箱温度");
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("归位 XY 先");     // "Home XY First"
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("打印停机");     //"PRINTER HALTED"
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("请重置");     //"Please reset"
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("天");     //"d" // One character only

Marlin/src/lcd/language/language_zh_TW.h

@@ -391,7 +391,6 @@ namespace Language_zh_TW {
   PROGMEM Language_Str MSG_ERR_MINTEMP_BED                 = _UxGT("錯誤：最低熱床溫度");     //"Err: MINTEMP BED"
   PROGMEM Language_Str MSG_ERR_MAXTEMP_CHAMBER             = _UxGT("錯誤：最高機箱溫度");   //"Err: MAXTEMP CHAMBER"
   PROGMEM Language_Str MSG_ERR_MINTEMP_CHAMBER             = _UxGT("錯誤：最低機箱溫度");   //"Err: MINTEMP CHAMBER"
-  PROGMEM Language_Str MSG_ERR_Z_HOMING                    = _UxGT("歸位 XY 先");     //"Home XY First"
   PROGMEM Language_Str MSG_HALTED                          = _UxGT("印表機停機");     //"PRINTER HALTED"
   PROGMEM Language_Str MSG_PLEASE_RESET                    = _UxGT("請重置");     //"Please reset"
   PROGMEM Language_Str MSG_SHORT_DAY                       = _UxGT("天");     //"d" // One character only