I like to use vimdiff as a git diff/merge tool. The problem is when I resize the host terminal window to a new size: of the two split panes, the leftmost remain of the same width, while the rightmost is extended to full window size.

Is there a command to make the split panes equal width after the windows has been resized? Or a setting that makes the panes always be of same size? I looked into `:set equalalways` but it does not seem to do what I am asking.