K 10 svn:author V 5 dougb K 8 svn:date V 27 2009-05-16T22:22:31.373791Z K 7 svn:log V 588 Enhance the safety of the -U option: 1. In several places make sure that the mtree database is not empty using the -s argument to test instead of -f. (I thought I'd already changed this, but obviously not.) 2. When deriving the list of changed files use a colon-delimited list. 3. If the list of changed files is empty, unset the variable, and test for a non-empty CHANGED in diff_loop() before entering that routine. Enhance the speed of the -U option by using an internal case statement instead of echoing the variable to an external grep for every file. Fix indentation on one line. END