diff --git a/bb.sh b/bb.sh
index 2a08eca..6973d07 100755
--- a/bb.sh
+++ b/bb.sh
@@ -161,23 +161,8 @@ global_variables_check() {
 
 # Test if the markdown script is working correctly
 test_markdown() {
-    [[ -z $markdown_bin ]] && return 1
-    [[ -z $(which diff) ]] && return 1
-
-    in=/tmp/md-in-${RANDOM}.md
-    out=/tmp/md-out-${RANDOM}.html
-    good=/tmp/md-good-${RANDOM}.html
-    echo -e "line 1\n\nline 2" > "$in"
-    echo -e "<p>line 1</p>\n\n<p>line 2</p>" > "$good"
-    "$markdown_bin" "$in" > "$out" 2> /dev/null
-    diff $good $out &> /dev/null # output is irrelevant, we'll check $?
-    if (($? != 0)); then
-        rm -f "$in" "$good" "$out"
-        return 1
-    fi
-    
-    rm -f "$in" "$good" "$out"
-    return 0
+    [[ -n $markdown_bin ]] &&
+        [[ $("$markdown_bin" <<< $'line 1\n\nline 2') == $'<p>line 1</p>\n\n<p>line 2</p>' ]]
 }
 
 
@@ -220,7 +205,7 @@ disqus_body() {
     echo '<div id="disqus_thread"></div>
             <script type="text/javascript">
             /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
-               var disqus_shortname = '\'$global_disqus_username\''; // required: replace example with your forum shortname
+               var disqus_shortname = '"'$global_disqus_username'"'; // required: replace example with your forum shortname
 
             /* * * DONT EDIT BELOW THIS LINE * * */
             (function() {
@@ -238,7 +223,7 @@ disqus_footer() {
     [[ -z $global_disqus_username ]] && return
     echo '<script type="text/javascript">
         /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
-        var disqus_shortname = '\'$global_disqus_username\''; // required: replace example with your forum shortname
+        var disqus_shortname = '"'$global_disqus_username'"'; // required: replace example with your forum shortname
 
         /* * * DONT EDIT BELOW THIS LINE * * */
         (function () {
@@ -388,7 +373,7 @@ twitter() {
 # Return 0 (bash return value 'true') if the input file is an index, feed, etc
 # or 1 (bash return value 'false') if it is a blogpost
 is_boilerplate_file() {
-    name=$(clean_filename "$1")
+    name=${1#./}
     case $name in
     ( "$index_file" | "$archive_index" | "$tags_index" | "$footer_file" | "$header_file" | "$global_analytics_file" | "$prefix_tags"* )
         return 0 ;;
@@ -400,14 +385,6 @@ is_boilerplate_file() {
     esac
 }
 
-# Filenames sometimes have leading './' or other oddities which need to be cleaned
-#
-# $1 the file name
-# returns the clean file name
-clean_filename() {
-    echo "${1#./}" # Delete leading './'
-}
-
 # Adds all the bells and whistles to format the html page
 # Every blog post is marked with a <!-- entry begin --> and <!-- entry end -->
 # which is parsed afterwards in the other functions. There is also a marker
@@ -445,14 +422,16 @@ create_html_page() {
         echo '</div></div></div>' # title, header, headerholder
         echo '<div id="divbody"><div class="content">'
 
-        file_url=$(clean_filename "$filename")
-        file_url=$(sed 's/.rebuilt//g' <<< "$file_url") # Get the correct URL when rebuilding
+        file_url=${filename#./}
+        file_url=${file_url%.rebuilt} # Get the correct URL when rebuilding
         # one blog entry
         if [[ $index == no ]]; then
             echo '<!-- entry begin -->' # marks the beginning of the whole post
             echo "<h3><a class=\"ablack\" href=\"$file_url\">"
             # remove possible <p>'s on the title because of markdown conversion
-            echo "$title" | sed 's/<\/*p>//g'
+            title=${title//<p>/}
+            title=${title//<\/p>/}
+            echo "$title"
             echo '</a></h3>'
             if [[ -z $timestamp ]]; then
                 echo "<div class=\"subtitle\">$(LC_ALL=$date_locale date +"$date_format") &mdash; "
@@ -684,14 +663,13 @@ all_tags() {
     {
         echo "<h3>$template_tags_title</h3>"
         echo "<ul>"
-        for i in ./$prefix_tags*.html; do
+        for i in $prefix_tags*.html; do
             [[ -f "$i" ]] || break
             echo -n "." 1>&3
             nposts=$(grep -c "<\!-- text begin -->" "$i")
-            tagname=$(echo "$i" | cut -c "$((${#prefix_tags}+3))-" | sed 's/\.html//g')
-            i=$(clean_filename "$i")
-            word=$template_tags_posts_singular
-            (($nposts > 1)) && word=$template_tags_posts
+            tagname=${i#"$prefix_tags"}
+            tagname=${tagname%.html}
+            ((nposts > 1)) && word=$template_tags_posts || word=$template_tags_posts_singular
             echo "<li><a href=\"$i\">$tagname</a> &mdash; $nposts $word</li>"
         done
         echo "" 1>&3
@@ -810,7 +788,8 @@ rebuild_tags() {
     rm "$tmpfile"
     # Now generate the tag files with headers, footers, etc
     while IFS='' read -r i; do
-        tagname=$(echo "$i" | cut -c "$((${#prefix_tags}+3))-" | sed 's/\.tmp\.html//g')
+        tagname=${i#./"$prefix_tags"}
+        tagname=${tagname%.tmp.html}
         create_html_page "$i" "$prefix_tags$tagname.html" yes "$global_title &mdash; $template_tag_title \"$tagname\""
         rm "$i"
     done < <(ls -t ./"$prefix_tags"*.tmp.html 2>/dev/null)
@@ -828,24 +807,23 @@ get_post_title() {
 #
 # $2 if "-n", tags will be sorted by number of posts
 list_tags() {
-    if [[ $2 ]] && [[ $2 == -n ]]; then do_sort=1; else do_sort=0; fi
+    if [[ $2 == -n ]]; then do_sort=1; else do_sort=0; fi
 
     ls ./$prefix_tags*.html &> /dev/null
     (($? != 0)) && echo "No posts yet. Use 'bb.sh post' to create one" && return
 
     lines=""
-    for i in ./$prefix_tags*.html; do
+    for i in $prefix_tags*.html; do
         [[ -f "$i" ]] || break
         nposts=$(grep -c "<\!-- text begin -->" "$i")
-        tagname=$(echo "$i" | cut -c "$((${#prefix_tags}+3))-" | sed 's/\.html//g')
-        i=$(clean_filename "$i")
-        word=$template_tags_posts_singular
-        (($nposts > 1)) && word=$template_tags_posts
+        tagname=${i#"$prefix_tags"}
+        tagname=${tagname#.html}
+        ((nposts > 1)) && word=$template_tags_posts || word=$template_tags_posts_singular
         line="$tagname # $nposts # $word"
         lines+=$line\\n
     done
 
-    if (( $do_sort == 1 )); then
+    if (( do_sort == 1 )); then
         echo -e "$lines" | column -t -s "#" | sort -nrk 2
     else
         echo -e "$lines" | column -t -s "#" 
@@ -895,7 +873,7 @@ make_rss() {
             get_post_title "$i"
             echo '</title><description><![CDATA[' 
             get_html_file_content 'text' 'entry' $cut_do <"$i"
-            echo "]]></description><link>$global_url/$(clean_filename "$i")</link>" 
+            echo "]]></description><link>$global_url/${i#./}</link>" 
             echo "<guid>$global_url/$i</guid>" 
             echo "<dc:creator>$global_author</dc:creator>" 
             echo "<pubDate>$(LC_ALL=C date -r "$i" +"%a, %d %b %Y %H:%M:%S %z")</pubDate></item>"
@@ -923,7 +901,7 @@ create_includes() {
         echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'
         echo '<html xmlns="http://www.w3.org/1999/xhtml"><head>'
         echo '<meta http-equiv="Content-type" content="text/html;charset=UTF-8" />'
-        echo '<meta name="viewport" content="width=device-width, initial-scale=1.0">'
+        echo '<meta name="viewport" content="width=device-width, initial-scale=1.0" />'
         printf '<link rel="stylesheet" href="%s" type="text/css" />\n' "${css_include[@]}"
         if [[ -z $global_feedburner ]]; then
             echo "<link rel=\"alternate\" type=\"application/rss+xml\" title=\"$template_subscribe_browser_button\" href=\"$blog_feed\" />"
@@ -952,7 +930,7 @@ delete_includes() {
 create_css() {
     # To avoid overwriting manual changes. However it is recommended that
     # this function is modified if the user changes the blog.css file
-    [[ -n $css_include ]] && return || css_include=('main.css' 'blog.css')
+    (( ${#css_include[@]} > 0 )) && return || css_include=('main.css' 'blog.css')
     if [[ ! -f blog.css ]]; then 
         # blog.css directives will be loaded after main.css and thus will prevail
         echo '#title{font-size: x-large;}
@@ -1125,7 +1103,7 @@ do_main() {
     # Test for existing html files
     if ls ./*.html &> /dev/null; then
         # We're going to back up just in case
-        tar cfz ".backup.tar.gz" *.html &&
+        tar -c -z -f ".backup.tar.gz" -- *.html &&
             chmod 600 ".backup.tar.gz"
     elif [[ $1 == rebuild ]]; then
         echo "Can't find any html files, nothing to rebuild"