Re: compatibility with Sun's original vi for command :su

Christian Brabandt wrote:

> On Mon, June 24, 2013 23:54, Paul Maier wrote:
> > Hi,
> >
> > the original vi on Sun took :su as :suspend,
> > whereas vim takes :su as :substitute.
> >
> > I am very used to typing :su.
> >
> > Would it be possible for VIM 7.4 to add a new compatibility flag to
> > cpoptions
> > about the meaning of :su ?
> >
> > suggested compatible flag: :su = :suspend, :s = :substitute
> > without the flag: :su = :substitute
> >
>
> Looks like a bug to me. POSIX also requires :su to be used for
> :suspend (http://pubs.opengroup.org/onlinepubs/007908799/xcu/ex.html)
>
> Do we need a new cpo setting here, or should it be enough to
> patch vim to take :su as :suspend?

The POSIX spec has a bug: it says that :s means :substitute, which means
anything starting with :s means :substitute, including :su. But then
:suspend can be abbreviated to :su, that's a conflict.

Relevant quotes:

For each of the commands listed below, the command can be
entered as the abbreviation (those characters in the Synopsis
command word preceding the [), the full command (all characters
shown for the command word, omitting the [ and ]), or any subset
of the characters of the full command down to the abbreviation.
For example, the args command (shown as ar[gs] in the Synopsis)
can be entered as ar, arg or args.

[...]

Substitute

Synopsis: [range] s[ubstitute] [/pattern/repl/[options] [count] [flags]]

[...]

Suspend

Synopsis: su[spend][!]


Making an exception for :su to mean :suspend instead of :substitute
would be weird.

--
GALAHAD: No. Look, I can tackle this lot single-handed!
GIRLS: Yes, yes, let him Tackle us single-handed!
"Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

/// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
\\\ help me help AIDS victims -- http://ICCF-Holland.org ///

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.