Re: move/copy question

[Thomas Dickey]

On Thu, Jun 06, 2024 at 05:05:30AM +0000, david sowerby wrote:
> According to the O'Reilly book Vile doesn't have the vi 'move' command (or
> the 'copy' one either?) But checking through Vile's "show-commands" they are
> both described -- 'move-til' and 'copy-til'.  But they don't work :-(
> ...........or am I doing something wrong?  A search in the Archives gives no
> result.  Another month another question.

They are in the symbol table for completeness, but as the message says,
not implemented.  The reason for the omission is that (without a lot of
work, of course), the vi-compatible syntax wouldn't work with the way
vile's ":" line is parsed:

        + vi works by reading the whole line all at once, and picking out what
          it needs.

        + vile works by accepting the line in steps which allow for
          name-completion and scrolling through the history.

          The basic scheme of parsing in steps dates from the early 1990s.
          Later in the 1990s, I did a lot of the name-completion and
          history mechanism.

          While _that_ has some quirks (which I've gotten used to, and
          overlook), getting that to work well took a lot of time :-)

The archives don't go back that far, of course (looks like that began in
January 2006).  Paul Fox used to run a mailing list on his machine.
I'm not aware of an archive for that, and don't have a complete set.

There was some occasional discussion of the above points, and I probably
have some relevant mail, but digging it out would take some work :-(

The code in its current form dates from 1996, with some reformatting in 2001:

1.277        (pgf      01-May-96): /* ARGSUSED */
1.277        (pgf      01-May-96): int
1.290        (tom      15-Mar-97): unimpl(int f GCC_UNUSED, int n GCC_UNUSED)
1.277        (pgf      01-May-96): {
1.453        (tom      21-Aug-01):     mlwarn("[Sorry, that vi command is 
unimplemented in vile ]");
1.453        (tom      21-Aug-01):     return FALSE;
1.277        (pgf      01-May-96): }
1.277        (pgf      01-May-96): 
1.277        (pgf      01-May-96): int
1.277        (pgf      01-May-96): opercopy(int f, int n)
1.277        (pgf      01-May-96): {
1.453        (tom      21-Aug-01):     return unimpl(f, n);
1.277        (pgf      01-May-96): }
1.277        (pgf      01-May-96): 
1.277        (pgf      01-May-96): int
1.277        (pgf      01-May-96): opermove(int f, int n)
1.277        (pgf      01-May-96): {
1.453        (tom      21-Aug-01):     return unimpl(f, n);
1.277        (pgf      01-May-96): }

but the unimpl and related functions date from 1991:

REV:1.6                 main.c              1991/05/31 11:12:19       pgf

   changed args to execute(), and
   added linespec character class, and
   added unimplemented ex functions

All of this is in RCS, but I've exported stuff to git -

https://invisible-island.net/personal/git-exports.html
https://github.com/ThomasDickey/vile-snapshots
https://github.com/ThomasDickey/pgf-vile-snapshots

-- 
Thomas E. Dickey <dickey@invisible-island.net>
https://invisible-island.net

signature.asc
Description: PGP signature