Re: shell-command-on-region but with command line arguments

[Bruno Barbier <brubar.cs@gmail.com>]

Luca Ferrari <fluca1978@gmail.com> writes:

> The problem is that I'm using (shell-command-on-region) that does not
> allow me to insert arguments to the command, and I don't know how the
> command is effectively invoked (e.g., piping the region to standard
> input, using a temporary file) so I'm not able to "append" my
> arguments.

The command will receive the region as its standard input (see the help
of the command shell-command-on-region):
   "Execute string COMMAND in inferior shell with region as input."


Couldn't you just customize your own shell command string ?

Something like:

    (defun my-on-region (where how)
      (interactive "sWhere: \nsHow: \n")
      (let ((b (if mark-active (min (point) (mark)) (point-min)))
            (e (if mark-active (max (point) (mark)) (point-max)))
            ;; Build a command that uses the arguments WHERE and
            ;; HOW, and also display the standard input.
            (perl (format "echo \"BEGIN Where=%s, How=%s\"; cat; echo \"\nEND\"" 
                          (shell-quote-argument where) 
                          (shell-quote-argument how))))
        (shell-command-on-region b e perl)))

Bruno