Avoid external TR when replacing , with space.

No need for an external tool, Bash can do a global literal substitution itself.

todo.sh

@@ -775,12 +775,8 @@ _list() {
     fi
     items=$(
         sed = "$src"                                            \
-        | sed '''
+        | sed "N; s/^/     /; s/ *\(.\{$PADDING,\}\)\n/\1 /"    \
-            N
+        | grep -v "^[ 0-9]\+ *$"
-            s/^/     /
-            s/ *\([ 0-9]\{'"$PADDING"',\}\)\n/\1 /
-            /^[ 0-9]\+ *$/d
-         '''
     )
     if [ "${filter_command}" ]; then
         filtered_items=$(echo -n "$items" | eval "${filter_command}")
@@ -995,7 +991,7 @@ case $action in
 
     # Split multiple depri's, if comma separated change to whitespace separated
     # Loop the 'depri' function for each item
-    for item in $(echo $* | tr ',' ' '); do
+    for item in ${*//,/ }; do
         getTodo "$item"
 
 	if [[ "$todo" = \(?\)\ * ]]; then
@@ -1019,7 +1015,7 @@ case $action in
 
     # Split multiple do's, if comma separated change to whitespace separated
     # Loop the 'do' function for each item
-    for item in $(echo $* | tr ',' ' '); do
+    for item in ${*//,/ }; do
         getTodo "$item"
 
         # Check if this item has already been done