is_control_egc: admit NUL

2 years ago · db2f6c06b5
parent a5e9928621
commit db2f6c06b5
1 changed files with 1 additions and 1 deletions
--- a/src/lib/internal.h
+++ b/src/lib/internal.h
@ -1427,7 +1427,7 @@ plane_blit_sixel(sprixel* spx, fbuf* f, int leny, int lenx,
 static inline bool
 is_control_egc(const unsigned char* egc, int bytes){
  if(bytes == 1){
-    if(*egc && iscntrl(*egc)){
+    if(*egc < 0x20 || *egc == 0x7f){ // includes NUL terminator
      return true;
    }
  }else if(bytes == 2){