Re: vimrc: identify "small" version vs "huge" version

On 2020-10-02, ping song wrote:
> experts:
> I found in centos 7 there is /usr/bin/vi and /usr/bin/vim, with same version,
> patches.
> but vi is the "small" version and "vim" is the huge one. 
> obviously both will use same .vimrc, and when vi is used a lot of errors pop up
> because of the much less features compiled.
> how do I differ these two in  my .vimrc file?

Unfortunately, the small version does not include the +eval feature,
which means that you can't use :if/:else/:endif along with has() in
the usual manner to skip features in your vimrc that your vim
doesn't support. However, without the +eval feature, vim will
simply skip over any :if/:endif construct it finds. Therefore, you
can still use :if/:endif to avoid commands and options that the
small version doesn't understand. (You can't use :else here.
Without the +eval feature, vim will also skip over :else blocks.)

For example:

if eval
set some_option_not_in_small_version
endif

See

:help :version
:help :if

Regards,
Gary

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