From 6c6e8281d5f16c4446562762c6422eb0163aa3a1 Mon Sep 17 00:00:00 2001
From: JustAnotherArchivist <JustAnotherArchivist@users.noreply.github.com>
Date: Wed, 29 Mar 2023 08:15:55 +0000
Subject: [PATCH] Fix log_loop emitting an empty line on zero output

---
 codearchiver-bot | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/codearchiver-bot b/codearchiver-bot
index d4fc2e6..09f9a6e 100755
--- a/codearchiver-bot
+++ b/codearchiver-bot
@@ -27,8 +27,8 @@ function log {
 
 function log_loop {
 	prefix="$1"
-	# If the output does not end with a LF, add one. Then replace CRLF with LF and replace remaining CR with LF.
-	{ lastchar="$(tee /dev/fd/42 | tail -c 1 | xxd -p)"; if [[ "${lastchar}" != '0a' ]]; then printf '\n'; fi } 42>&1 |
+	# If there is output and it does not end with a LF, add one. Then replace CRLF with LF and replace remaining CR with LF.
+	{ lastchar="$(tee /dev/fd/42 | tail -c 1 | xxd -p)"; if [[ "${lastchar}" && "${lastchar}" != '0a' ]]; then printf '\n'; fi } 42>&1 |
 	  sed -u 's,\r$,,; s,\r,\n,g' |
 	  while IFS= read -r line; do log "${prefix}${line}"; done
 }