Shell integration: Better fix for multi-line prompts in bash

Also fix bash redrawing only the last PS2 prompt

shell-integration/kitty.bash

@@ -40,7 +40,12 @@ _ksi_main() {
     fi
 
     if [[ "${_ksi_prompt[mark]}" == "y" ]]; then 
-        PS1="\[\e]133;A;does_not_redraw_multiline_prompt\a\]$PS1"
+        # bash does not redraw the leading lines in a multiline prompt so
+        # mark them as secondary prompts
+        local secondary_prompt="\[\e]133;A;k=s\a\]"
+        PS1=${PS1//\n/\n"$secondary_prompt"}
+        PS1="\[\e]133;A\a\]$PS1"
+        PS2="\[\e]133;A;k=s\a\]$PS2"
         PS0="\[\e]133;C\a\]$PS0"
     fi