Small documentation tweak for :g delimiters

[Tim Chase]

Shortly after the help for :v it reads

Instead of the '/' which surrounds the {pattern}, you can use any
other single byte character, but not an alphabetic character,
'\', '"' or '|'. This is useful if you want to include a '/' in
the search pattern or replacement string.

This makes it sounds like "!" should be a viable delimiter (as it
it is for a :s command per `:help pattern-delimiter`). However,
it ends up turning a :g command into a :v command.

So in addition to excluding backslash, double-quote, and bar, I'd
recommend adding "!" to the list here.

-tim

discovered by unthinkingly doing a

:g!/path/

and getting all lines that didn't contain "path" rather than all
lines that did contain "/path/". Using an alternate delimiter like

:g@/path/

worked as expected. And I often use "!" as my pattern-delimiter
in substitute commands when the pattern contains "/" characters

[Bram Moolenaar]

Thanks for the suggestion. I first thought this was only for ":global",
but using it with ":vglobal" gives an error "E477: No ! allowed".
Thus it can indeed be added to the list.

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[Owajigbanam Ogbuluijah]

If you check the documentation for help :v, you'd see it's marked as the same 

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[Tim Chase]

On 2023-05-01 21:37, Owajigbanam Ogbuluijah wrote:
> If you check the documentation for *help :v*, you'd see it's
> marked as the same

Yes, `:g!` and `:v` are the same. However, both can take alternate
delimiters (other than "/"). The documentation states that the
alternate delimter cannot be a backslash, a double-quote, or a bar.
But my initial email notes that "!" should be in included in that
list of prohibited characters (as Bram confirms) because it's viewed
as a negation to :g and is invalid for :v

-tim