Reload All Buffers in Vim

In vim :e edits the current file (reloads from disk), which is useful if the file has been changed outside of vim and you want to load those changes into your buffer in vim.

I ran into a scenario where I ran a formatter outside of vim, and wanted to reload all files open in buffers in my vim session. I took a guess that :ea would edit all (like :wa writes all, :qa quits all) - but alas, swing and a miss.

The way to do this is with :bufdo e. bufdo executes the command - in this case e - in each buffer in the buffer list.