Would be great to have PowerShell auto-completion support

[mateialexandru]

What would be a good starting point to test out different characters for PowerShell auto-complete? Is (M-x shell) + activating PowerShell inside + using send-buffer commands good enough? Or should we start with PowerShell as default shell?

Any instructions for setting up a test environment with the purpose of understanding PowerShell auto-complete key sequences, would be great!

[CeleritasCelery]

I am glad you are interested in trying this! The different completion styles are defined here (you will need to view it in Emacs to see the special characters.

emacs-native-shell-complete/native-complete.el

Lines 56 to 66 in 01d8a20

	(defcustom native-complete-style-suffix-alist
	'((bash . "\e*'� echo '�")
	(zsh . "�y�")
	(csh . "�y�")
	(sqlite . "\t\ty�")
	(default . "\ty�"))
	"Alist mapping style symbols to strings appended to completion candidates.
	The keys should be the same as the possible values of
	`native-complete-style-regex-alist'."
	:type '(alist :key-type symbol :value-type string)
	:options '(bash zsh csh sqlite default))

For each type of shell we define a set of character codes to send to the shell to get it to display the completion candidates. For example with zsh we send C-d which prints all candidates, then send y because it will sometimes ask for a confirmation, then send C-u to clear the prompt to that point. This is different for the different shells.

What we need is the sequence for powershell. I usually start using the shell in a regular terminal (i.e. Windows Terminal or the powershell.exe). From there I can google or find in the docs what sequence is need to get it to print the completions for the current commandline. Like if I started with git st I would expect it to complete git status among others.

Once I have found the key sequence, I would do exactly what you describe. Try using powershell in M-x shell and then use comint-simple-send to see if it will print the completions in shell. From there it is pretty easy to add a new completion style.