Replace backticks in config with $(...)

This applies e24777fa2c to todo.cfg, too, and adds a verification to the existing test.

Note: Because todo.cfg is preprocessed by test-lib, we use the original config from the working copy, not the copy inside the test fixture.

.gitignore

@@ -1,3 +1,6 @@
 VERSION-FILE
 tests/test-results
 tests/trash\ directory.*
+done.txt
+report.txt
+todo.txt

tests/t0100-code-nobacktick.sh

@@ -9,8 +9,15 @@ On failure, it will print each offending line number and line.
 '
 . ./test-lib.sh
 
+backtick_check()
+{
+    sed -n -e 's/\(^\|[ \t]\)#.*//' -e '/`/{' -e '=;p' -e '}' "$@"
+}
+
 test_todo_session 'no old-style backtick command substitution' <<EOF
->>> sed -n -e 's/\(^\|[ \t]\)#.*//' -e '/\`/{' -e '=;p' -e '}' "$(which todo.sh)"
+>>> backtick_check bin/todo.sh
+
+>>> backtick_check ../../todo.cfg
 EOF
 
 test_done

todo.cfg

@@ -2,7 +2,7 @@
 
 # Your todo.txt directory
 #export TODO_DIR="/Users/gina/Documents/todo"
-export TODO_DIR=`dirname "$0"`
+export TODO_DIR=$(dirname "$0")
 
 # Your todo/done/report.txt locations
 export TODO_FILE="$TODO_DIR/todo.txt"

todo_completion

@@ -58,7 +58,7 @@ _todo()
                             # a safety check of the ls action output.
                             local todo=$( \
                                 eval TODOTXT_VERBOSE=0 $_todo_sh '-@ -+ -p -x command ls "^ *${cur} "' | \
-                                sed -e 's/^ *[0-9]\+ //' -e 's/\((.) \)[0-9]\{2,4\}-[0-9]\{2\}-[0-9]\{2\} /\1/' \
+                                sed -e 's/^ *[0-9]\{1,\} //' -e 's/\((.) \)[0-9]\{2,4\}-[0-9]\{2\}-[0-9]\{2\} /\1/' \
                                     -e 's/\([xX] \)\([0-9]\{2,4\}-[0-9]\{2\}-[0-9]\{2\} \)\{1,2\}/\1/' \
                                     -e 's/[[:space:]]*$//' \
                                     -e '1q' \