diff --git a/generate_pa11y_ci_urls_from_git_diff.sh b/generate_pa11y_ci_urls_from_git_diff.sh
index 96e21c466a..cccff755bf 100644
--- a/generate_pa11y_ci_urls_from_git_diff.sh
+++ b/generate_pa11y_ci_urls_from_git_diff.sh
@@ -3,21 +3,39 @@
 # Export the list as a CommonJS module for the pa11y-ci configuration to use.
 # Typical usage: generate_pa11y_ci_urls_from_git_diff.sh gh-pages > .pa11yci.js
 
-base_ref=$1
-if [ -z "$base_ref" ]; then
-  echo "No Git base ref provided. Usage: $0 <base_ref>"
-  exit 1
-fi
-
-changed_files=$(git diff --name-only $base_ref)
-
-echo -n "module.exports=[";
-for file in $changed_files; do
-  if [[ $file == _posts/* ]]; then
-    echo -n "'/$(./url_of_post.sh $file)',";
-  elif [[ $file == *.html && ! $file == _includes/* && ! $file == _layouts/* ]]; then
-    echo -n "'/$(./url_of_page.sh $file)',";
+function generate_pa11y_ci_urls_from_git_diff {
+  base_ref=$1
+  if [ -z "$base_ref" ]; then
+    echo "No Git base ref provided. Usage: $0 <base_ref>"
+    exit 1
   fi
-done
-echo -n "];";
+
+  changed_files=$(git diff --name-only $base_ref)
+
+  echo -n "module.exports=[";
+  for file in $changed_files; do
+    if [[ $file == _posts/* ]]; then
+      echo -n "'/$(url_of_post $file)',";
+    elif [[ $file == *.html && ! $file == _includes/* && ! $file == _layouts/* ]]; then
+      echo -n "'/$(url_of_page $file)',";
+    fi
+  done
+  echo -n "];";
+}
+
+function url_of_page {
+  echo $1 | sed "s/\(\/\?index\)\?\.html$//";
+}
+
+function url_of_post {
+  year="\([0-9][0-9][0-9][0-9]\)"
+  month="\([0-9][0-9]\)"
+  day="\([0-9][0-9]\)"
+  slug="\(.*\)"
+  file_ext="\(html\|markdown\|md\)"
+
+  echo $1 | sed "s/^_posts\/$year-$month-$day-$slug\.$file_ext$/\1\/\2\/\3\/\4.html/";
+}
+
+generate_pa11y_ci_urls_from_git_diff $1
 
diff --git a/url_of_page.sh b/url_of_page.sh
deleted file mode 100644
index 7d245a4258..0000000000
--- a/url_of_page.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-echo $1 | sed "s/\(\/\?index\)\?\.html$//";
-
diff --git a/url_of_post.sh b/url_of_post.sh
deleted file mode 100644
index a639436393..0000000000
--- a/url_of_post.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-year="\([0-9][0-9][0-9][0-9]\)"
-month="\([0-9][0-9]\)"
-day="\([0-9][0-9]\)"
-slug="\(.*\)"
-file_ext="\(html\|markdown\|md\)"
-
-echo $1 | sed "s/^_posts\/$year-$month-$day-$slug\.$file_ext$/\1\/\2\/\3\/\4.html/";
-