Re: [PATCH v2] completion: improve doc for complex aliases

"Philippe Blain via GitGitGadget" [off-list ref] writes:

From: Philippe Blain <redacted>

The completion code can be told to use a particular completion for
aliases that shell out by using ': git <cmd> ;' as the first command of
the alias. This only works if <cmd> and the semicolon are separated by a
space, since if the space is missing __git_aliased_command returns (for
example) 'checkout;' instead of just 'checkout', and then
__git_complete_command fails to find a completion for 'checkout;'.

The examples have that space but it's not clear if it's just for
style or if it's mandatory. Explicitly mention it.

Signed-off-by: Philippe Blain <redacted>
---
    completion: improve doc for complex aliases
    
    Changes since v1:
    
     * fixed the typo pointed out by Eric
     * added an explanation of why the space is mandatory, as suggested by
       Linus

Thanks for the investigation. The commit message reads much better now.

This LGTM, but I think Junio's review comments [1] are worth
considering. I'll respond there also.

[1] https://lore.kernel.org/git/xmqqo7i6khxv.fsf@gitster.g/#t (local)