Can you edit a log if you made a mistake when specifying some commit comments?
                +1 
                A: 
                
                
              Open the log messages window (Show Log), right click on log message and choose "Edit log message".
                  Otávio Décio
                   2009-09-18 18:43:24
                
              I get this error though: "a DAV request failed; It's possible that the repository's pre-revprop-change hook either failed or is non-existet"  oh well.  Thanks for that did not see it before.
                  CoffeeAddict
                   2009-09-18 18:49:10
                You may need to add a hook for property changes; I had this error after upgrading from 1.4 to 1.6.
                  Otávio Décio
                   2009-09-18 18:58:03
                +1 I wondered how to do this.
                  Jon Seigel
                   2009-09-18 19:14:58
                
                +2 
                A: 
                
                
              
            By default, you cannot edit the log message. In order to change this default behavior, you (or your SVN administrator) need to set up an appropriate pre-revprop-change hook.
The online "Version Control with Subversion" book describes what a pre-revprop-change hook is and how to set one up.
This StackOverflow entry has pre-revprop-change content that you can cut-and-paste to enable log message edits.
                  Brandon E Taylor
                   2009-09-18 18:52:37