Re: [vile] Using '\' char in key bindings

[Thomas Dickey]

On Sat, 25 Sep 2010, address@hidden wrote:

> I'm curious as to why this happened? I assume it was the '\' char that
> requires the double quotes so is there something special about backslash? More
> specifically what escape functionality exists on the right hand side of
> key bindings, if it does exist?

in scripts -

http://invisible-island.net/vile/macros.html#strings-id

I mostly use single-quoted strings in macros since they're simpler.

> Also, I've been reading the vileinit.rc from the distribution and I have a
> question about procedures. Is there a way to pass them arguments and have some
> type of $1 $2 $N expansions in the procedure? If not is there a way to achieve
> this with setting some type of user variable prior to calling the procedure?

yes - it supports $1, etc.

http://invisible-island.net/vile/macros.html#named-id

Parameters can be typed, so that vile can prompt for missing parameters
and do it in a sensible manner.

Generally speaking, user-variables are "global".  However the macros 
support a directive named "~local" which can save/restore variables on an 
internal stack to avoid conflict.  (There's no way to access the stack
from a script).

> Thanks again,
> Wayne
>
> On Fri, Sep 24, 2010 at 05:12:50PM -0400, Thomas Dickey wrote:
> > On Fri, 24 Sep 2010, address@hidden wrote:
> >
> > > I can interactively set this key binding.
> > >
> > > bind-key paste-from-primary ^X-\
> > >
> > > And the binding works. However if I place that line in my .vilerc and start
> > > xvile I get the following error message:
> >
> > I see how to make it work.  What I did was
> >
> > :show-history
> >
> > and saw that it was stored as
> >
> > bind-key paste-from-primary "^X-\\"
> >
> > and sourcing that seems to work (no error messages, etc).
> >
> > > [Not a proper key-sequence]
> > >
> > > I've tried doubling the '\' in case it is being interpreted as an escape
> > > character, same result.
> >
> > In a script, vile recognizes quoted strings (double- and single-quotes),
> > and those are supposed to match(*) the way the history mechanism
> > saves/restores tokens.  Interactively, it translates to/from that form.
> >
> > (*) if it doesn't, that's a bug of course
> >
> > --
> > Thomas E. Dickey
> > http://invisible-island.net
> > ftp://invisible-island.net
>
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--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net