ENH: Improved 'del ITEM# TERM' command.

- Condensing whitespace around TERM into a single space and removing leading/trailing spaces if at the beginning/end of the task.
- Proper error message if TERM not found.
- Aligned verbose removal message with the verbose output of the 'replace' command.
In addition, removed (accidental) printing of the task (without leading ITEM#) when checking for existence of the task; using empty check of task text as done elsewhere.

tests/t1800-del.sh

@@ -0,0 +1,112 @@
+#!/bin/sh
+
+test_description='basic del functionality
+'
+. ./test-lib.sh
+
+test_todo_session 'del usage' <<EOF
+>>> todo.sh del B
+usage: todo.sh del ITEM# [TERM]
+=== 1
+EOF
+
+test_todo_session 'del nonexistant item' <<EOF
+>>> todo.sh -f del 42
+42: No such task.
+=== 1
+
+>>> todo.sh -f del 42 Roses
+42: No such task.
+=== 1
+EOF
+
+cat > todo.txt <<EOF
+(B) smell the uppercase Roses +flowers @outside
+(A) notice the sunflowers
+stop
+EOF
+test_todo_session 'basic del' <<EOF
+>>> todo.sh -p list
+2 (A) notice the sunflowers
+1 (B) smell the uppercase Roses +flowers @outside
+3 stop
+--
+TODO: 3 of 3 tasks shown
+
+>>> todo.sh -f del 1
+1: (B) smell the uppercase Roses +flowers @outside
+TODO: 1 deleted.
+
+>>> todo.sh -p list
+2 (A) notice the sunflowers
+3 stop
+--
+TODO: 2 of 2 tasks shown
+EOF
+
+cat > todo.txt <<EOF
+(B) smell the uppercase Roses +flowers @outside
+(A) notice the sunflowers
+(C) stop
+EOF
+test_todo_session 'basic del TERM' <<EOF
+>>> todo.sh -p list
+2 (A) notice the sunflowers
+1 (B) smell the uppercase Roses +flowers @outside
+3 (C) stop
+--
+TODO: 3 of 3 tasks shown
+
+>>> todo.sh del 1 uppercase
+1: (B) smell the uppercase Roses +flowers @outside
+got 'uppercase' removed to become
+1: (B) smell the Roses +flowers @outside
+
+>>> todo.sh -p list
+2 (A) notice the sunflowers
+1 (B) smell the Roses +flowers @outside
+3 (C) stop
+--
+TODO: 3 of 3 tasks shown
+
+>>> todo.sh del 1 "the Roses"
+1: (B) smell the Roses +flowers @outside
+got 'the Roses' removed to become
+1: (B) smell +flowers @outside
+
+>>> todo.sh del 1 m
+1: (B) smell +flowers @outside
+got 'm' removed to become
+1: (B) sell +flowers @outside
+
+>>> todo.sh del 1 @outside
+1: (B) sell +flowers @outside
+got '@outside' removed to become
+1: (B) sell +flowers
+
+>>> todo.sh del 1 sell
+1: (B) sell +flowers
+got 'sell' removed to become
+1: (B) +flowers
+EOF
+
+cat > todo.txt <<EOF
+(B) smell the uppercase Roses +flowers @outside
+(A) notice the sunflowers
+(C) stop
+EOF
+test_todo_session 'del nonexistant TERM' <<EOF
+>>> todo.sh del 1 dung
+1: (B) smell the uppercase Roses +flowers @outside
+'dung' not found; no removal done.
+=== 1
+
+>>> todo.sh -p list
+2 (A) notice the sunflowers
+1 (B) smell the uppercase Roses +flowers @outside
+3 (C) stop
+--
+TODO: 3 of 3 tasks shown
+EOF
+
+test_done

todo.sh

@@ -776,37 +776,50 @@ case $action in
     errmsg="usage: $TODO_SH del ITEM# [TERM]"
     item=$2
     [ -z "$item" ] && die "$errmsg"
+    [[ "$item" = +([0-9]) ]] || die "$errmsg"
+    DELETEME=$(sed "$item!d" "$TODO_FILE")
+    [ -z "$DELETEME" ] && die "$item: No such task."
 
     if [ -z "$3" ]; then
-
+        if  [ $TODOTXT_FORCE = 0 ]; then
-        [[ "$item" = +([0-9]) ]] || die "$errmsg"
+            echo "Delete '$DELETEME'?  (y/n)"
-        if sed -ne "$item p" "$TODO_FILE" | grep "^."; then
+            read ANSWER
-            DELETEME=$(sed "$item!d" "$TODO_FILE")
+        else
-
+            ANSWER="y"
-            if  [ $TODOTXT_FORCE = 0 ]; then
+        fi
-                echo "Delete '$DELETEME'?  (y/n)"
+        if [ "$ANSWER" = "y" ]; then
-                read ANSWER
+            if [ $TODOTXT_PRESERVE_LINE_NUMBERS = 0 ]; then
+                # delete line (changes line numbers)
+                sed -i.bak -e $item"s/^.*//" -e '/./!d' "$TODO_FILE"
             else
-                ANSWER="y"
+                # leave blank line behind (preserves line numbers)
+                sed -i.bak -e $item"s/^.*//" "$TODO_FILE"
             fi
-            if [ "$ANSWER" = "y" ]; then
+            if [ $TODOTXT_VERBOSE -gt 0 ]; then
-                if [ $TODOTXT_PRESERVE_LINE_NUMBERS = 0 ]; then
+                echo "$item: $DELETEME"
-                    # delete line (changes line numbers)
+                echo "TODO: $item deleted."
-                    sed -i.bak -e $item"s/^.*//" -e '/./!d' "$TODO_FILE"
-                else
-                    # leave blank line behind (preserves line numbers)
-                    sed -i.bak -e $item"s/^.*//" "$TODO_FILE"
-                fi
-                [ $TODOTXT_VERBOSE -gt 0 ] && echo "TODO: '$DELETEME' deleted."
-            else
-                echo "TODO: No tasks were deleted."
             fi
         else
-            die "$item: No such task."
+            echo "TODO: No tasks were deleted."
         fi
     else
-        sed -i.bak -e $item"s/$3/ /g"  "$TODO_FILE"
+        sed -i.bak \
-        [ $TODOTXT_VERBOSE -gt 0 ] && echo "TODO: $3 removed from $item."
+            -e $item"s/^\((.) \)\{0,1\} *$3 */\1/g" \
+            -e $item"s/ *$3 *\$//g" \
+            -e $item"s/  *$3 */ /g" \
+            -e $item"s/ *$3  */ /g" \
+            -e $item"s/$3//g" \
+            "$TODO_FILE"
+        newtodo=$(sed "$item!d" "$TODO_FILE")
+        if [ "$DELETEME" = "$newtodo" ]; then
+            [ $TODOTXT_VERBOSE -gt 0 ] && echo "$item: $DELETEME"
+            die "'$3' not found; no removal done."
+        fi
+        if [ $TODOTXT_VERBOSE -gt 0 ]; then
+            echo "$item: $DELETEME"
+            echo "got '$3' removed to become"
+            echo "$item: $newtodo"
+        fi
     fi
     ;;