How do I edit a log message that I already committed in Subversion

Edit a log message that I already committed in Subversion on Linux :

You can use svn proedit command to edit the logs, But sometimes it will give an error like this : 

"svn: None of the environment variables SVN_EDITOR, VISUAL or EDITOR are set, and no 'editor-cmd' run-time configuration option was found"

So the solution is Set SVN_EDITOR Environment Variable To Vim.
Here the command to export the path :

# export SVN_EDITOR=vim

To permanently set this environment variable put the below line in your ~/.bash_profile file.

# export SVN_EDITOR=vim

Now you can edit the SVN log :

# svn propedit -r N --revprop svn:log URL

                         OR

# svn propset -r N --revprop svn:log "new log message" URL

Here N will be the Rev no

URL is your SVN path

When you run this propedit command, and just in case you see this message

"DAV request failed; it's possible that the repository's pre-revprop-change hook either failed or is non-existen"

Its because Subversion doesn't allow you to modify log messages because they are unversioned and will be lost permanently.

Go to the hooks directory on your Subversion server (replace ~/svn/reponame with the directory of your repository)

# cd ~/svn/reponame/hooks

Remove the extension
# mv pre-revprop-change.tmpl pre-revprop-change

Make it executable (cannot do chmod +x!)

#chmod 755 pre-revprop-change

Now edit, it will work..!

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