How to set SVN_EDITOR environment variable in Windows Server

On a newly installed workstation or server, you might encountered the following subversion error when you commit a change:

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

So you haven't set the default SVN_EDITOR environment variable, yet. The error message continues:

svn: E205007: Commit failed (details follow):
svn: E205007: Could not use external editor to fetch log message; consider setting the $SVN_EDITOR environment variable or using the --message (-m) or --file (-F) options

svn: E205007: None of the environment variables SVN_EDITOR, VISUAL or EDITOR are set, and no ‘editor-cmd' run-time configuration option was found

You can fix this error by setting a SVN_EDITOR environment variable in Windows. To set SVN_EDITOR temporarily, issue the following command on your cmd.exe command-line:

set SVN_EDITOR=notepad.exe

You can use SETX to set a permanent environment variable in Windows:

setx SVN_EDITOR C:\Windows\System32\notepad.exe

A PowerShell one-liner:

[System.Environment]::SetEnvironmentVariable("SVN_EDITOR", "C:\Windows\System32\notepad.exe", "User")

Of course you can also set an editor-cmd configuration in your subversion config file. Then you wouldn't have to set an environment variable. Locate the svn config file in your %USERPROFILE% and add/change the editor-cmd line:

[helpers]
editor-cmd = C:\Windows\System32\notepad.exe

Set SVN_Editor environment variable in Bash (Linux)

export SVN_EDITOR=vim

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

vim ~/.bash_profile
export SVN_EDITOR=vim
# save file

and execute source ~/.bashrc to apply the changes immediately.