mutate $QUERY_TAG and TITLE into grepable format

sxbm

@@ -93,6 +93,14 @@ bm_list(){
       print COL_LINE_NUM NR ") " COL_LINK LINK " " COL_TITLE $0 ; }' \
       "$DATA_FILE"
 
+  # POSIX shell doesn't have arrays.
+  # Desperate times calls for desperate measures!
+  [ -n "$QUERY_TAG" ] &&
+    QUERY_TAG=$(echo "$QUERY_TAG" | sed 's/ *$//;s/ /" -e "/g;s/^/-e "/;s/$/"/')
+
+  [ -n "$QUERY_TITLE" ] &&
+    QUERY_TITLE=$(echo "$QUERY_TITLE" | sed 's/ *$//;s/ /" -e "/g;s/^/-e "/;s/$/"/')
+
   awk -v COL_LINK="$COL_LINK" -v COL_TITLE="$COL_TITLE" \
     -v COL_LINE_NUM=$COL_LINE_NUM -v QUERY_TITLE="$QUERY_TITLE" \
     ' BEGIN{IGNORECASE=1}