Trim the given strings in a redirect.

When I create a redirect the source is very often a copy/past out of the recent logs. While copiing the text it often has some whitespace (space, tab and so on) in front or at the end of the string. Yesterday I detected this is the reason why some entries are on top of the regular list instead of the alphabetical place. After starting an edit, without changing anything, and pressing the save button the trim has been performed somehow.
Please trim the entry as the default action before sending the result to the database.
Thanks.