removed accursed alacritty_sixel_hack, hurrah!

src/lib/input.c

@@ -665,11 +665,11 @@ ruts_numeric(int* numeric, unsigned char c){
 // ought be fed to the machine, and -1 on an invalid state transition.
 static int
 pump_control_read(init_state* inits, unsigned char c){
-  fprintf(stderr, "state: %2d char: %1c %3d %02x\n", inits->state, isprint(c) ? c : ' ', c, c);
+//fprintf(stderr, "state: %2d char: %1c %3d %02x\n", inits->state, isprint(c) ? c : ' ', c, c);
   if(c == NCKEY_ESC){
-    if(inits->state != STATE_NULL && inits->state != STATE_DCS && inits->state != STATE_DCS_DRAIN && inits->state != STATE_XTVERSION2 && inits->state != STATE_XTGETTCAP3 && inits->state != STATE_DA_DRAIN){
+    /*if(inits->state != STATE_NULL && inits->state != STATE_DCS && inits->state != STATE_DCS_DRAIN && inits->state != STATE_XTVERSION2 && inits->state != STATE_XTGETTCAP3 && inits->state != STATE_DA_DRAIN){
       fprintf(stderr, "Unexpected escape in state %d\n", inits->state);
-    }
+    }*/
     inits->state = STATE_ESC;
     return 0;
   }
@@ -684,7 +684,7 @@ pump_control_read(init_state* inits, unsigned char c){
       }else if(c == 'P'){
         inits->state = STATE_DCS;
       }else if(c == '\\'){
-        fprintf(stderr, "string terminator -- parse previous response FIXME\n");
+//fprintf(stderr, "string terminator -- parse previous response FIXME\n");
         // FIXME only now do we parse e.g. XTGETTCAP response
         inits->state = STATE_NULL;
       }

src/lib/termdesc.c

@@ -94,7 +94,6 @@ apply_term_heuristics(tinfo* ti, const char* termname, int fd){
     setup_kitty_bitmaps(ti, fd);
   }else if(strstr(termname, "alacritty")){
     termname = "Alacritty";
-    ti->alacritty_sixel_hack = true;
     ti->quadrants = true;
     // ti->sextants = true; // alacritty https://github.com/alacritty/alacritty/issues/4409 */
     ti->RGBflag = true;

src/lib/termdesc.h

@@ -144,13 +144,6 @@ typedef struct tinfo {
   bool sextants;  // do we have (good, vetted) Unicode 13 sextant support?
   bool braille;   // do we have Braille support? (linux console does not)
 
-  // alacritty went rather off the reservation for their sixel support. they
-  // reply to DSA with CSI?6c, meaning VT102, but no VT102 had Sixel support,
-  // so if the TERM variable contains "alacritty", *and* we get VT102, we go
-  // ahead and query XTSMGRAPHICS.
-  // FIXME we can get rid of this with proper input handling #1469
-  bool alacritty_sixel_hack;
-
   // mlterm resets the cursor (i.e. makes it visible) any time you print
   // a sprixel. we work around this spiritedly unorthodox decision.
   bool sprixel_cursor_hack; // do sprixels reset the cursor? (mlterm)