No need to prepare (clear) zui-process-buffer* output variables

zui-list

@@ -204,10 +204,6 @@ trap "REPLY=-2; reply=(); return" TERM INT QUIT
         [[ "$ZUILIST_CURRENT_SEGMENT" -gt "$nseg" ]] && ZUILIST_CURRENT_SEGMENT="$nseg"
         integer active_segment="$ZUILIST_CURRENT_SEGMENT"
 
-        # Prepare output variables for zui-process-buffer
-        local ZUI_PB_WORDS="" ZUI_PB_WORDS_BEGINNINGS="" ZUI_PB_SPACES=""
-        local ZUI_PB_SELECTED_WORD="" ZUI_PB_LEFT="" ZUI_PB_RIGHT=""
-
         # Lets find interesting segment and mark it with \7...\31
         zui-process-buffer "$element"
         integer size="${#ZUI_PB_WORDS}" i

zui-process-buffer

@@ -19,10 +19,13 @@ local MBEGIN MEND MATCH mbegin mend match
 local buf="${1:-$BUFFER}"
 local cursor="${2:-$CURSOR}"
 
+# All output variables are either overwritten or cleared
 ZUI_PB_WORDS=( "${(Z+n+)buf}" )
 ZUI_PB_SPACES=( )
 ZUI_PB_WORDS_BEGINNINGS=( )
 ZUI_PB_SELECTED_WORD="-1"
+ZUI_PB_LEFT=""
+ZUI_PB_RIGHT=""
 
 # (Z+n+) will return 1 element for buf that is empty or only whitespace
 if [[ "$buf" = ( |$'\t')# ]]; then

zui-process-buffer2

@@ -17,6 +17,7 @@ local MBEGIN MEND MATCH mbegin mend match
 
 local buf="${1:-$BUFFER}"
 
+# All output variables are either overwritten or cleared
 ZUI_PB2_WORDS=( "${(Z+n+)buf}" )
 ZUI_PB2_QWORDS=( )
 ZUI_PB2_SPACES=( )