Re: !$ changes when mistyped?

["Benjamin R. Haskell" <zsh@xxxxxxxxxx>]

On Thu, 23 Sep 2010, Bart Schaefer wrote:

> On Sep 23,  4:22pm, Benjamin R. Haskell wrote:
> }
> } Is this behavior expected -- should history expansion/completion } 
> (terminology?)  change what '!$' references?  If so, is it 
> configurable?
>
> Quoth the documentation:
>
> --- 8< ---
> By default, a history reference with no event designator refers to the 
> same event as any preceding history reference on that command line; if 
> it is the only history reference in a command, it refers to the 
> previous command.  However, if the option CSH_JUNKIE_HISTORY is set, 
> then every history reference with no event specification _always_ 
> refers to the previous command.
>
> For example, `!' is the event designator for the previous command, so 
> `!!:1' always refers to the first word of the previous command, and 
> `!!$' always refers to the last word of the previous command.  With 
> CSH_JUNKIE_HISTORY set, then `!:1' and `!$' function in the same 
> manner as `!!:1' and `!!$', respectively.  Conversely, if 
> CSH_JUNKIE_HISTORY is unset, then `!:1' and `!$' refer to the first 
> and last words, respectively, of the same event referenced by the 
> nearest other history reference preceding them on the current command 
> line, or to the previous command if there is no preceding reference.
> --- 8< ---
>
> What the doc doesn't say, but which is true, is that history 
> references expanded by magic-space or completion are considered "the 
> nearest other history reference preceding" for this purpose.
>
> Hence you probably want CSH_JUNKIE_HISTORY.

Awesome.  Yes, this appears to be exactly what I was looking for.

--
Thanks,
Ben