From d78e6ae325835380a7db31b482e791be3d94863c Mon Sep 17 00:00:00 2001
From: Elton Renda <erenda@equalexperts.com>
Date: Fri, 14 May 2021 13:01:28 +0200
Subject: [PATCH] refactor: clear the scrollback buffer properly on all
 terminals

---
 lxc/nginx-proxy-manager/install.sh | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lxc/nginx-proxy-manager/install.sh b/lxc/nginx-proxy-manager/install.sh
index 56acc86..0c2bf64 100644
--- a/lxc/nginx-proxy-manager/install.sh
+++ b/lxc/nginx-proxy-manager/install.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env sh
 set -euo pipefail
 
-trap trapexit EXIT EXIT SIGINT SIGTERM
+trap trapexit EXIT SIGTERM
 
 TEMPDIR=$(mktemp -d)
 TEMPLOG="$TEMPDIR/tmplog"
@@ -14,7 +14,7 @@ cd $TEMPDIR
 touch $TEMPLOG
 
 # Helpers
-log() { logs=$(cat $TEMPLOG | sed -e "s/34/32/g" | sed -e "s/info/success/g"); printf "\033c$logs\n\e[34m[info] $*\e[0m\n" | tee $TEMPLOG; }
+log() { logs=$(cat $TEMPLOG | sed -e "s/34/32/g" | sed -e "s/info/success/g"); clear && printf "\033c\e[3J$logs\n\e[34m[info] $*\e[0m\n" | tee $TEMPLOG; }
 runcmd() { 
   LASTCMD=$(grep -n "$*" "$0" | sed "s/[[:blank:]]*runcmd//");
   if [[ "$#" -eq 1 ]]; then
@@ -25,13 +25,14 @@ runcmd() {
 }
 trapexit() {
   status=$?
+  
   if [[ $status -eq 0 ]]; then
     logs=$(cat $TEMPLOG | sed -e "s/34/32/g" | sed -e "s/info/success/g")
-    printf "\033c$logs\n";
+    clear && printf "\033c\e[3J$logs\n";
   elif [[ -s $TEMPERR ]]; then
     logs=$(cat $TEMPLOG | sed -e "s/34/31/g" | sed -e "s/info/error/g")
     err=$(cat $TEMPERR | sed $'s,\x1b\\[[0-9;]*[a-zA-Z],,g' | rev | cut -d':' -f1 | rev | cut -d' ' -f2-) 
-    printf "\033c$logs\e[33m\n$0: line $LASTCMD\n\e[33;2;3m$err\e[0m\n"
+    clear && printf "\033c\e[3J$logs\e[33m\n$0: line $LASTCMD\n\e[33;2;3m$err\e[0m\n"
   else
     printf "\e[33muncaught error occurred\n\e[0m"
   fi