* Shell argument quoting woes
@ 2013-07-25 13:30 Thorsten Jolitz
0 siblings, 0 replies; 4+ messages in thread
From: Thorsten Jolitz @ 2013-07-25 13:30 UTC (permalink / raw
To: help-gnu-emacs
Hi List,
assume this works in a shell
,------------------------
| $ prg -'fun "strg" num'
`------------------------
with 'prg' being a shell-command (for bash on GNU/Linux) calling a program,
'fun' being a function defined in that program, 'strg' being a string argument
to that function, and 'num' being a numeric argument to that function.
The task is to make a string out of this in an Elisp program and give
this 'cmd' as single argument to an Elisp function that then does
something like
#+begin_src emacs-lisp
(let ((cmdlist (split-string cmd)))
(set-buffer (apply 'make-comint "buffer-name" (car cmdlist)
nil (cdr cmdlist) ) ))
#+end_src
Experimenting with (format "%s %S etc" ...) and (shell-quote-argument..) did
not result in anything that works. It seems the outcome is either
,--------------------
| prg -'fun strg num'
`--------------------
or
,------------------------
| prg -'fun \"strg\" num'
`------------------------
or
,--------------------------------
| prg\\ -\\'fun\\ \\\"strg\\\"\\ num\\'
`--------------------------------
or something similar, all resulting in errors.
Trying to replace the single quotes in that line with double-quote did not
work either.
How can I quote such a 'cmd' string in a way that it finally arrives as
,------------------------
| $ prg -'fun "strg" num'
`------------------------
?
--
cheers,
Thorsten
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Shell argument quoting woes
[not found] <mailman.1758.1374759057.12400.help-gnu-emacs@gnu.org>
@ 2013-07-25 14:51 ` Rustom Mody
2013-07-25 15:28 ` Thorsten Jolitz
[not found] ` <mailman.1765.1374766754.12400.help-gnu-emacs@gnu.org>
0 siblings, 2 replies; 4+ messages in thread
From: Rustom Mody @ 2013-07-25 14:51 UTC (permalink / raw
To: help-gnu-emacs
On Thursday, July 25, 2013 7:00:32 PM UTC+5:30, Thorsten Jolitz wrote:
Seems to me that this inside lisp
> ,------------------------
> | prg -'fun \"strg\" num'
> `------------------------
> How can I quote such a 'cmd' string in a way that it finally arrives as
should be this
>
> ,------------------------
> | $ prg -'fun "strg" num'
> `------------------------
at the shell... No?
Anyway heres some (not too great) hacking:
(with my recently learnt from Bastien's C-j!)
(setq cmd "prg -'fun \"strg\" num'")
"prg -'fun \"strg\" num'"
(setq x (split-string cmd "-"))
("prg " "'fun \"strg\" num'")
(setq p (car (split-string (car x))))
"prg"
(setq arg (cadr x))
"'fun \"strg\" num'"
; (make-comint "buffer-name" p nil (concat "-" arg))
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Shell argument quoting woes
2013-07-25 14:51 ` Rustom Mody
@ 2013-07-25 15:28 ` Thorsten Jolitz
[not found] ` <mailman.1765.1374766754.12400.help-gnu-emacs@gnu.org>
1 sibling, 0 replies; 4+ messages in thread
From: Thorsten Jolitz @ 2013-07-25 15:28 UTC (permalink / raw
To: help-gnu-emacs
Rustom Mody <rustompmody@gmail.com> writes:
> On Thursday, July 25, 2013 7:00:32 PM UTC+5:30, Thorsten Jolitz wrote:
> Seems to me that this inside lisp
>
>> ,------------------------
>> | prg -'fun \"strg\" num'
>> `------------------------
>> How can I quote such a 'cmd' string in a way that it finally arrives as
>
> should be this
>
>>
>> ,------------------------
>> | $ prg -'fun "strg" num'
>> `------------------------
>
> at the shell... No?
>
> Anyway heres some (not too great) hacking:
> (with my recently learnt from Bastien's C-j!)
>
> (setq cmd "prg -'fun \"strg\" num'")
> "prg -'fun \"strg\" num'"
> (setq x (split-string cmd "-"))
> ("prg " "'fun \"strg\" num'")
> (setq p (car (split-string (car x))))
> "prg"
> (setq arg (cadr x))
> "'fun \"strg\" num'"
> ; (make-comint "buffer-name" p nil (concat "-" arg))
I see, so the problem was actually the string-splitting by spaces and
not the quoting. Thanks!
--
cheers,
Thorsten
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Shell argument quoting woes
[not found] ` <mailman.1765.1374766754.12400.help-gnu-emacs@gnu.org>
@ 2013-07-25 16:46 ` Rustom Mody
0 siblings, 0 replies; 4+ messages in thread
From: Rustom Mody @ 2013-07-25 16:46 UTC (permalink / raw
To: help-gnu-emacs
On Thursday, July 25, 2013 8:58:51 PM UTC+5:30, Thorsten Jolitz wrote:
> I see, so the problem was actually the string-splitting by spaces and
> not the quoting. Thanks!
Actually ideal would be to split on only 1st space(s).
In languages like python this is possible.
I guess you can do it with a regexp in elisp:
Python 2.7.5+ (default, Jun 2 2013, 21:21:29)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> cmd="prg -'fun \"strg\" num'"
>>> cmd.split(" ", 1)
['prg', '-\'fun "strg" num\'']
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-07-25 13:30 Shell argument quoting woes Thorsten Jolitz
[not found] <mailman.1758.1374759057.12400.help-gnu-emacs@gnu.org>
2013-07-25 14:51 ` Rustom Mody
2013-07-25 15:28 ` Thorsten Jolitz
[not found] ` <mailman.1765.1374766754.12400.help-gnu-emacs@gnu.org>
2013-07-25 16:46 ` Rustom Mody
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