pxltrm.patch

diff --git a/pxltrm b/pxltrm
index 54da9b2..e81512a 100755
--- a/pxltrm
+++ b/pxltrm
@@ -72,7 +72,9 @@ hex_to_rgb() {
 }
 
 get_pos() {
-    IFS='[;' read -p $'\e[6n' -d R -rs _ y x _
+       printf  $'\e[6n'
+    #IFS='[;' read -p $'\e[6n' -d R -rs _ y x _
+    IFS='[;' read -d R -rs _ y x _
 }
 
 print_color() {
@@ -86,19 +88,22 @@ print_color() {
 
 paint() {
     get_pos
-    printf '%b' "\\e[${y};${x}H${2}${1}\\b"
-    hist+=("$_")
+    local a="\\e[${y};${x}H${2}${1}\\b"
+    #printf '%b' "\\e[${y};${x}H${2}${1}\\b"
+    #hist+=("$_")
+    printf %b "$a"
+    hist+=("$a")
 }
 
 prompt() {
     printf '\e[s\e[%s;H\e[m' "$((LINES-1))"
 
     case "$1" in
-        s) read -rp "save file: " f; save_file > "${f:-/dev/null}" ;;
-        o) read -rp "load file: " f; [[ -f "$f" ]] && load_file "$f" ;;
-        c) read -rp "input color: " color ;;
-        b) read -rp "input brush: " brush_char ;;
-        a) read -n 1 -rp "clear? [y/n]: " y; [[ "$y" == y ]] && clear_screen ;;
+        s)printf "save file: "; read -r f; save_file > "${f:-/dev/null}" ;;
+        o) printf "load file: "; read -r f; [[ -f "$f" ]] && load_file "$f" ;;
+        c)printf "input color: ";  read -r color ;;
+        b)printf "input brush: "; read -r brush_char ;;
+        a) printf "clear? [y/n]: "; read -n 1 -r y; [[ "$y" == y ]] && clear_screen ;;
     esac
 
     printf '\e[u'
@@ -119,14 +124,15 @@ cursor() {
 
         e) paint " " ;;
         d) print_color; paint "${brush_char:=█}" "$print_col" ;;
-        u) (("${#hist}">0))  && undo; status_line ;;
-        r) (("${#undos}">1)) && redo; status_line ;;
+        u) (("${#hist[0]}">0))  && undo; status_line ;;
+        r) (("${#undos[0]}">1)) && redo; status_line ;;
 
         a|b|c|o|s) prompt "${1: -1}" ;;
     esac
 }
 
 main() {
+    shopt -s eval_unsafe_arith 2>/dev/null
     clear_screen
     get_term_size
     status_line