Full text search

[Luke Mauldin]

Is there a recommended way to do a full text search of commits that include 
changed text. For example if I wanted “svn log” to show me all of that commits 
that have an added or deleted line that contains “foo”, is that possible? Git 
has similar functionality in “git log -S foo”
Using “svn diff -r:HEAD | grep foo” gets me close but that just gives me the 
lines that changed and not the commit that they changed.