grep: extend functionality, add man page entry, add unit test. walkchangerevs now returns a two-tuple. Its behaviour is also extensively commented. The annotate command's getname function has been factored out to a new function, trimname, so it can be shared between annotate and grep. The behaviour of grep has been beefed up, so that it now performs a number of useful functions.

     1

Is there an error message when trying to diff non-existing files?

     2

not: No such file or directory

     3

found: No such file or directory

     4

Is there an error message when trying to add non-existing files?

     5

not: No such file or directory

     6

found: No such file or directory