How make function to run a shell command ON BUFFER??

How make function to run a shell command ON BUFFER??

[Christian Seberino]

pychecker is a function that checks Python code..

e.g.

pychecker myprogram.py


How make an Emacs function to run pychecker on buffer???

I guess function will have to run a shell command with the 1 and only
argument being the name of buffer.

Chris

Re: How make function to run a shell command ON BUFFER??

[Kevin Rodgers]

Christian Seberino wrote:

> pychecker is a function that checks Python code..
> 
> e.g.
> 
> pychecker myprogram.py
> 
> 
> How make an Emacs function to run pychecker on buffer???
> 
> I guess function will have to run a shell command with the 1 and only
> argument being the name of buffer.

(defun pychecker (file)
   "*Run the external \"pychecker\" program on FILE.
The output is displayed in the *compilation* buffer, which `\\[next-error]'
and `M-x compile-goto-error' parse to find each line of matched text."
   (interactive (let* ((default-file (and buffer-file-name
                                          (file-name-nondirectory
                                           buffer-file-name)))
                       (prompt (if default-file
                                   (format "File (default: %s): " default-file)
                                 "File: ")))
                  (list (read-file-name prompt nil default-file))))
   (compile (format "pychecker %s" file)))

-- 
Kevin Rodgers

Re: How make function to run a shell command ON BUFFER??

[Dan Anderson]

seberino@spawar.navy.mil (Christian Seberino) writes:

> pychecker is a function that checks Python code..
> 
> e.g.
> 
> pychecker myprogram.py
> 
> 
> How make an Emacs function to run pychecker on buffer???

        C-x  h marks  the entire  buffer.  M-|  lets you  run  a shell
command on the marked region.  So C-x h M-| pychecker RET should do it
for you.

        I'd suggest  creating a macro  or lisp function but  I've been
having problems  myself with doing  something similar in  Perl.  Emacs
hides  the output from  the shell  command --  which makes  running my
buffer through Perl to check for syntax errors problematic.

-Dan

How make function to run a shell command ON BUFFER??

[Yehudah Rubinsky]

 >pychecker is a function that checks Python code.. e.g.
 >pychecker myprogram.py

 >How make an Emacs function to run pychecker on buffer???
 >I guess function will have to run a shell command with the 1 and only
 >argument being the name of buffer.

Pyhton mode's Ctl-c Ctl-c runs the python interpreter against the buffer. 
The good new is this will check the syntax of the python code, including 
the use of C-x` to step to each error in turn. The bad news is that it will 
actually  run the python code, which may have undesirable side effects.

Best,
Yehudah Rubinsky