LibVT: Rename escape$D to CUB (Cursor Backward)

Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/5cdfc582426
Pull-request: https://github.com/SerenityOS/serenity/pull/1137
Reviewed-by: https://github.com/awesomekling

Libraries/LibVT/Terminal.cpp

@@ -344,8 +344,9 @@ void Terminal::CUF(const ParamVector& params)
     set_cursor(m_cursor_row, new_column);
 }
 
-void Terminal::escape$D(const ParamVector& params)
+void Terminal::CUB(const ParamVector& params)
 {
+    // CUB – Cursor Backward
     int num = 1;
     if (params.size() >= 1)
         num = params[0];
@@ -622,7 +623,7 @@ void Terminal::execute_escape_sequence(u8 final)
         CUF(params);
         break;
     case 'D':
-        escape$D(params);
+        CUB(params);
         break;
     case 'H':
         escape$H(params);

Libraries/LibVT/Terminal.h

@@ -151,7 +151,7 @@ private:
     void CUU(const ParamVector&);
     void CUD(const ParamVector&);
     void CUF(const ParamVector&);
-    void escape$D(const ParamVector&);
+    void CUB(const ParamVector&);
     void escape$H(const ParamVector&);
     void ED(const ParamVector&);
     void EL(const ParamVector&);