Fix all Shellcheck SC2004 violations.

lib/suggest/suggest.sh

@@ -77,12 +77,12 @@ suggest () {
   ## get total
   count="${#found[@]}"
 
-  if (( ${count} == 1 )); then
+  if (( count == 1 )); then
     echo "${found[0]}"
-  elif (( ${count} > 0 )); then
-    printf "suggest: found %d result(s)\n" ${count}
+  elif (( count > 0 )); then
+    printf "suggest: found %d result(s)\n" "${count}"
     echo
-    for (( i = 0; i < ${count}; ++i )); do
+    for (( i = 0; i < count; ++i )); do
       printf "%d %s\n" $(echo -n ${found[$i]} | wc -c | tr -d ' ') "${found[$i]}"
     done | sort -n | awk '{ print $2 }' | xargs printf '  %s\n'
   else

lib/term/term.sh

@@ -53,8 +53,8 @@ term_move () {
   fi
 
   ## set state
-  (( _x = ${x} ))
-  (( _y = ${y} ))
+  (( _x = x ))
+  (( _y = y ))
 
   ## write
   printf "\e[%d;%d;f" ${y} ${x}
@@ -68,8 +68,8 @@ term_transition () {
     return 1
   fi
 
-  (( x = ${x} + ${_x} ))
-  (( y = ${y} + ${_y} ))
+  (( x = x + _x ))
+  (( y = y + _y ))
 
   term move "${x}" "${y}"
   return 0