Monday, July 30, 2012

Re: when to use ' or "

Ben Schmidt wrote:
> On 30/07/12 1:10 PM, Bee wrote:
> > On Jul 29, 7:24 pm, Ben Fritz<fritzophre...@gmail.com> wrote:
> >> On Friday, July 27, 2012 7:02:52 PM UTC-5, Bee wrote:
> >>> I tend to use ' around strings passed as arguments to functions or
> >>
> >>> commands, and use " for comments.
> >>
> >>> Comments... Please
> >>
> >> I use " for strings when I need to use special characters, e.g.
> >>
> >> :execute "nnoremap \<CR>" MyFuncResult()
> >>
> >> I also use " for strings which contain ' characters, like:
> >>
> >> :echo "I don't like to double up the ' characters"
> >>
> >> I use ' everywhere else, especially when I want to include a literal backslash or a " character in a string.
> >
> > Would your first example be simpler,
> > since ' suppresses special chars:
> >
> > :execute 'nnoremap<CR>' MyFuncResult()
>
> Perhaps it wasn't the best example. This example from :help :normal is
> perhaps more instructive (it moves the cursor to the next window).
>
> :exe "normal \<c-w>\<c-w>"
>
> The :normal command doesn't understand <>-notation, so it needs bona
> fide control-W characters in its argument. Using :execute with a
> double-quoted string and the \< escape inside it (:help expr-quote)
> facilitates that, while still keeping the code readable, representable
> and printable in valid Unicode text, etc..
>
> Ben.

Thank you for the clear explanation, and the valuable information.

Bill

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