Re: How to get to the helppage of shiftwidth in options.txt?

On 2015-03-29 15:26, Peng Yu wrote:
> > > When I ":help shiftwidth", I get to eval.txt. But I'd like to
> > > get to options.txt. How to do so? Thanks.
> >
> > :help 'shiftwidth'
>
> What is the difference between with the single quote and without
> the single quote? Where is this difference documented?

By convention, Vim's settings are targeted in the help by putting
single-quotes around them. If they're unique, you can find them in
the help without the quotes, as Vim does a best-guess matching for
substrings. Thus if you do something like

:help formatexpr

it will take you to the same place as

:help 'formatexpr'

However, as you discovered, if you leave off the single-quotes and
some other target is found, it will take you there instead. E.g.

:help 'list' " takes you to the help on the 'list' setting
vs
:help list " takes you to the help on ":list"

So generally, if you want to find an option/setting, make sure to
include the single-quote. The conventions are listed at

:help help-context

which is visible right from the first page of just typing

:help

You can also hit control+D to have Vim show you the potential matches
such as

:help list<C-D>

which shows that there are Ex commands, settings, functions,
build-time options, variables, and data-types all containing the
search-term "list".

-tim


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