Re: Setting cedit= causes vimincr :I to fail

On 2013-03-19, Christian Brabandt wrote:
> On Tue, March 19, 2013 17:43, Gary Johnson wrote:
> > On 2013-03-19, Christian Brabandt wrote:
> >> On Fri, March 15, 2013 20:29, Gary Johnson wrote:
> >>
> >> > Should the function of "!" in :normal and of "nore" in mappings be
> >> > extended to also ignore any non-default settings of 'cedit'?
> >>
> >> I think, plugin writers should take care of properly escaping
> >> the cedit key by themselves. That is, if they issue a search like this
> >> :exe "norm! /"
> >> they need to take care to replace the cedit key by Ctrl-V cedit key.
> >
> > But the writer in this case was not trying to use the cedit key--he
> > was innocently using another key (<Esc>) that I had chosen to be the
> > cedit key.
>
> I don't see, how this is different from other settings that might
> interfer plugins (e.g. 'gdefault', 'magic', 'remap', 'ed').

That's why I suggested that the plugin function save the current
'cedit' setting, set the default, do the work of the function, then
restore the original setting before returning.

> Say you don't want to use the search() function,
> but want to use
> :exe variable
> with variable being something like 'norm! /....<Esc>'
>
> There shouldn't be a problem with first substituting that variable by
> :let variable = substitute(variable, &cedit, '^V'.&cedit, 'g')
> where ^V is the literal Ctrl-V (and not the 2 distinct characters ^ and V)

Maybe I'm just being thick this morning--haven't even finished my
first coffee--but I don't think you understand the problem. The
'cedit' key is used to open the command-line window. The plugin
writer doesn't want to open the command-line window. The plugin
writer doesn't even care that command-line window exists. All he
wants to do is execute a normal-mode command that ends with an
<Esc>,

exe 'norm! /\%'.leftcol."v\<Esc>"

which :help says should behave as follows in that context:

<Esc> When typed and 'x' not present in 'cpoptions', quit
Command-line mode without executing. In macros or
when 'x' present in 'cpoptions', start entered command.

Instead of getting that documented behavior, the normal-mode command
is interpreting that <Esc> as the cedit key and entering the
command-line window. The plugin writer just wants to execute his
command. I don't see any way to escape that <Esc> to make it do
what :help says it does and not enter the command-line window when
'cedit' is set to <Esc>.

I think if the &cedit character was escaped with ^V as you
suggested, that would place a literal &cedit in the text, which is
not what the plugin writer wants, either.

The only solution I see, without modifying Vim as I suggested, is to
save and restore 'cedit' as I also suggested.

Regards,
Gary

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