suppress error messages and don't enter for loop when no tag files exist

bb.sh

@@ -720,7 +720,7 @@ all_tags() {
 
     echo "<h3>$template_tags_title</h3>" >> "$contentfile"
     echo "<ul>" >> "$contentfile"
-    for i in ./$prefix_tags*.html; do
+    for i in $(ls ./$prefix_tags*.html 2>/dev/null || echo ''); do
         echo -n "."
         nposts="$(grep -c "<\!-- text begin -->" $i)"
         tagname="$(echo $i | cut -c $((${#prefix_tags}+3))- | sed 's/\.html//g')"
@@ -837,7 +837,7 @@ rebuild_tags() {
         rm "$tmpfile"
     done
     # Now generate the tag files with headers, footers, etc
-    for i in $(ls -t ./$prefix_tags*.tmp.html); do
+    for i in $(ls -t ./$prefix_tags*.tmp.html 2>/dev/null || echo ''); do
         tagname="$(echo $i | cut -c $((${#prefix_tags}+3))- | sed 's/\.tmp\.html//g')"
         create_html_page "$i" "$prefix_tags$tagname.html" yes "$global_title &mdash; $template_tag_title \"$tagname\""
         rm "$i"