Add Edit The Current Command Prompt as a Bash TIL

bash/edit-the-current-command-prompt.md

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+# Edit The Current Command Prompt
+
+A neat feature of `bash` is the ability to open whatever the current state of
+the command prompt is into your default editor.
+
+Let's say we have a really long command that we've just tried to run, but it
+failed and we need to make a small change somewhere in the middle. Instead of
+holding the left arrow key for 30 seconds, we can instead hit `CTRL-X CTRL-E`.
+
+This pops us into our `EDITOR` (or maybe `VISUAL`, not sure which). In my case,
+that is `nvim`. I now have access to all the features I'm used to in `nvim` for
+quickly navigating to and editing, searching and replacing, or whatever.
+
+Once I've got the command how I like it, I can save and exit (`:wq`) and the
+updated command will be executed.
+
+This is similar to [the `fc` builtin](unix/fix-previous-command-with-fc.md),
+which also happens to be available for `zsh`.