bug#19829: 25.0.50; Design of commands operating on rectangular regions

[Stefan Monnier <monnier@iro.umontreal.ca>]

> Here is a composite patch with implementation of rectangular regions
> based on three different use cases:

Looks pretty good, thanks.

> +(defun region ()
> +  `(region
> +    (positions ,@(funcall region-extract-function 'positions))))

I don't think we want such a short name.  How 'bout `region-boundaries'?
Also, why `(region (positions ,@<foo>)) rather than something simpler
like `(region ,@<foo>)?

> -(defun query-replace (from-string to-string &optional delimited start end backward)
> +(defun query-replace (from-string to-string &optional delimited start end backward region)
[...]
> +	   (if (use-region-p) (region-beginning))
> +	   (if (use-region-p) (region-end))
> +	   (nth 3 common)
> +	   (if (use-region-p) (region)))))

I think we should re-use one of START or END rather than add a REGION argument.


        Stefan