Command-mode tab completion doesn't work, produces "^I" output

[Alex Payne]

When attempting to tab-complete paths and commands in command mode in
the latest build of MacVim, the expected behavior does not happen.
Instead, every press of the tab key outputs "^I" (ctrl-I), the
equivalent to the tab key. Nothing in my .vimrc or .gvimrc remaps
this key.

[Nico Weber]

Hi,

this is usually the result of running in vi-compatible mode. What's
the output of `:set compatible?`? (should be 'nocompatible'). Put `set
compatible` as first line into your .vimrc to fix this.

HTH,
Nico

[Alex Payne]

With "set compatible" as the first line of my .vimrc I'm able to tab-
complete command names in command mode but not filesystem paths.

[Nico Weber]

> With "set compatible" as the first line of my .vimrc I'm able to tab-
> complete command names in command mode but not filesystem paths.

Oh, I'm sorry, it has to be `set nocompatible` of course. Does that
help?

[Alex Payne]

Unfortunately, no. My previous setting was "set nocompatible". As I
said in my previous post, "set compatible" allowed me to tab-complete
commands, but not filesystem paths.

[Nico Weber]

> Unfortunately, no. My previous setting was "set nocompatible". As I
> said in my previous post, "set compatible" allowed me to tab-complete
> commands, but not filesystem paths.

Strange. Does it work if you launch MacVim with `mvim -u NONE -U NONE -
N` (that tells it to skip your .vimrc, your .gvimrc, your plugins, but
_does_ start MacVim in nocompatible mode)? If so, please post
your .vimrc/.gvimrc files.

Where do you try to complete file system paths? This only works in
places where vim expects a file (e.g. behind `:e `). If you try it
after e.g. `:echo` for testing, it won't work.

Nico