vimindent variable is not defined

[physixcat]

Steps to reproduce

1. vim --clean test.vim
2. :set indentexpr?
   this returns vimindent.Expr()
3. :echo vimindent.Expr()
   this returns E121: Undefined variable: vimindent

Expected behaviour

vimindent should be defined

This can be temporarily sidestepped by using the old(?) function
:set indentexpr=GetVimIndent()
once inside the session. Trying to do it with an autocommand Filetype or modeline will not work, because then GetVimIndent won't be defined.

Version of Vim

9.1.16

Environment

OS: Debian Sid
terminal: st
$TERM: tmux-256color
shell: 5.2.21

Logs and stack traces

No response

[chrisbra]

This is vim9 script. That is currenntly only valid when evaluating from within vim9 script context. I think it was discussed before, that one cannot easily call exported vim9 functions.

[physixcat]

I see. Thank you for clarifying. Problem seems to be that when older plugins check indentexpr for a vim filetype, they will run into the same undefined var issue.

Example: https://github.com/Thyrum/vim-stabs

If you load this plugin, edit a *.vim file, and toggle on autoindent, you get the same error

So the function is being called outside of the vim9 script context all the time

[monkoose]

To prevent described error, I guess instead of

vim/runtime/indent/vim.vim

Lines 17 to 19 in 13a0144

	import autoload '../autoload/dist/vimindent.vim'
	setlocal indentexpr=vimindent.Expr()

setlocal indentexpr=dist#vimindent#Expr() should be used.