From e304d6c11507ce17bec0fef6a7b40d6aa0c320f0 Mon Sep 17 00:00:00 2001
From: Nick Bradshaw <github@goose.ws>
Date: Wed, 10 Jan 2024 16:01:47 -0500
Subject: [PATCH] Cleaned up the bash a bit to avoid any problems from
 unexpected spaces or characters, hopefully that's okay!

---
 Pre-Consume-Script-Examples.md | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/Pre-Consume-Script-Examples.md b/Pre-Consume-Script-Examples.md
index 1a0280a..bd1530b 100644
--- a/Pre-Consume-Script-Examples.md
+++ b/Pre-Consume-Script-Examples.md
@@ -11,28 +11,31 @@ This wiki page is a repository of example [pre-consume scripts](https://docs.pap
 set -e -o pipefail
 export LC_ALL=C
 
-#IN="$1"
-IN="$DOCUMENT_WORKING_PATH"
-
-PAGES=$(pdfinfo "$IN" | grep -a ^Pages: | tr -dc '0-9')
 THRESHOLD=0.002
 
+#IN="$1"
+IN="${DOCUMENT_WORKING_PATH}"
+
+PAGES=$(pdfinfo "${IN}" | grep -a "^Pages:" | tr -dc '0-9')
+
 non_blank() {
-  for i in $(seq 1 $PAGES) ; do
-    PERCENT=$(gs -o -  -dFirstPage=${i} -dLastPage=${i} -sDEVICE=inkcov "${IN}" | grep CMYK | nawk 'BEGIN { sum=0; } {sum += $1 + $2 + $3 + $4;} END { printf "%.5f\n", sum } ')
-    if awk "BEGIN { exit !($PERCENT > $THRESHOLD) }"; then
-      echo $i
+for (( i="1"; i<="${PAGES}"; i++ )); do
+PERCENT=$(gs -o -  -dFirstPage="${i}" -dLastPage="${i}" -sDEVICE=inkcov "${IN}" | grep CMYK | nawk 'BEGIN { sum=0; } {sum += $1 + $2 + $3 + $4;} END { printf "%.5f\n", sum } ')
+    if awk "BEGIN { exit !(${PERCENT} > ${THRESHOLD}) }"; then
+        echo "${i}"
     else
-      >&2 echo Color-sum is $PERCENT: will remove blank page $i of $IN
+        >&2 echo "Color-sum is ${PERCENT}: will remove blank page ${i} of ${IN}"
     fi
-  done
+done
 }
 
-NON_BLANK=$(non_blank)
+NON_BLANK="$(non_blank)"
+NON_BLANK="$(tr '\n' ' ' <<<"${NON_BLANK}")"
+NON_BLANK="${NON_BLANK% }"
 
-if [ -n "$NON_BLANK" ]; then
-  NON_BLANK=$(echo $NON_BLANK  | tr ' ' ",")
-  qpdf "$IN" --replace-input --pages . $NON_BLANK --
+if [ -n "${NON_BLANK}" ]; then
+    NON_BLANK=$(echo "${NON_BLANK}" | tr ' ' ",")
+    qpdf "${IN}" --replace-input --pages . "${NON_BLANK}" --
 fi
 ```