The saved attributes could potentially get out of sync.

wincon/pdcdisp.c

@@ -83,9 +83,6 @@ void PDC_gotoyx(int row, int col)
 void _set_ansi_color(short f, short b, attr_t attr)
 {
     char esc[64], *p;
-    static short oldf = -1;
-    static short oldb = -1;
-    static short oldu = 0;
     short tmp, underline;
 
     if (f < 16)
@@ -104,7 +101,7 @@ void _set_ansi_color(short f, short b, attr_t attr)
 
     p = esc + sprintf(esc, "\x1b[");
 
-    if (f != oldf)
+    if (f != pdc_oldf)
     {
         if (f < 8)
             p += sprintf(p, "%d", f + 30);
@@ -113,10 +110,10 @@ void _set_ansi_color(short f, short b, attr_t attr)
         else
             p += sprintf(p, "38;5;%d", f);
 
-        oldf = f;
+        pdc_oldf = f;
     }
 
-    if (b != oldb)
+    if (b != pdc_oldb)
     {
         if (strlen(esc) > 2)
             p += sprintf(p, ";");
@@ -128,10 +125,10 @@ void _set_ansi_color(short f, short b, attr_t attr)
         else
             p += sprintf(p, "48;5;%d", b);
 
-        oldb = b;
+        pdc_oldb = b;
     }
 
-    if (underline != oldu)
+    if (underline != pdc_oldu)
     {
         if (strlen(esc) > 2)
             p += sprintf(p, ";");
@@ -141,7 +138,7 @@ void _set_ansi_color(short f, short b, attr_t attr)
         else
             p += sprintf(p, "24");
 
-        oldu = underline;
+        pdc_oldu = underline;
     }
 
     if (strlen(esc) > 2)

wincon/pdcscrn.c

@@ -31,6 +31,7 @@ static short ansitocurs[16] =
 };
 
 short pdc_curstoreal[16], pdc_curstoansi[16];
+short pdc_oldf, pdc_oldb, pdc_oldu;
 
 enum { PDC_RESTORE_NONE, PDC_RESTORE_BUFFER };
 
@@ -88,6 +89,13 @@ static DWORD old_console_mode = 0;
 
 static bool is_nt;
 
+static void _reset_old_colors(void)
+{
+    pdc_oldf = -1;
+    pdc_oldb = -1;
+    pdc_oldu = 0;
+}
+
 static HWND _find_console_handle(void)
 {
     TCHAR orgtitle[1024], temptitle[1024];
@@ -184,6 +192,8 @@ static int _set_console_infoex(void)
 static int _set_colors(void)
 {
     SetConsoleTextAttribute(pdc_con_out, 7);
+    _reset_old_colors();
+
     if (pSetConsoleScreenBufferInfoEx)
         return _set_console_infoex();
     else
@@ -368,6 +378,7 @@ int PDC_scr_open(int argc, char **argv)
         pdc_curstoreal[realtocurs[i]] = i;
         pdc_curstoansi[ansitocurs[i]] = i;
     }
+    _reset_old_colors();
 
     std_con_out =
     pdc_con_out = GetStdHandle(STD_OUTPUT_HANDLE);

wincon/pdcwin.h

@@ -17,6 +17,7 @@ extern HANDLE pdc_con_out, pdc_con_in;
 extern DWORD pdc_quick_edit;
 extern DWORD pdc_last_blink;
 extern short pdc_curstoreal[16], pdc_curstoansi[16];
+extern short pdc_oldf, pdc_oldb, pdc_oldu;
 
 extern int PDC_get_buffer_rows(void);
 extern void PDC_blink_text(void);