* about readline
@ 2006-03-11 14:56 William Xu
2006-03-11 15:09 ` Neil Jerram
0 siblings, 1 reply; 6+ messages in thread
From: William Xu @ 2006-03-11 14:56 UTC (permalink / raw)
Hi,
I'd like to control the completing candicates when doing readline
completion. For instance, suppose there's a variable
readline-completing-string with value "foo bar", then completions will
be based on either "foo" or "bar". Is there such a variable in readline?
--
William
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: about readline
2006-03-11 14:56 about readline William Xu
@ 2006-03-11 15:09 ` Neil Jerram
2006-03-11 15:42 ` William Xu
0 siblings, 1 reply; 6+ messages in thread
From: Neil Jerram @ 2006-03-11 15:09 UTC (permalink / raw)
Cc: guile-user
William Xu <william.xwl@gmail.com> writes:
> Hi,
>
> I'd like to control the completing candicates when doing readline
> completion. For instance, suppose there's a variable
> readline-completing-string with value "foo bar", then completions will
> be based on either "foo" or "bar". Is there such a variable in readline?
Yes, please see with-readline-completion-function in
ice-9/readline.scm.
Neil
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: about readline
2006-03-11 15:09 ` Neil Jerram
@ 2006-03-11 15:42 ` William Xu
2006-03-11 17:03 ` Neil Jerram
0 siblings, 1 reply; 6+ messages in thread
From: William Xu @ 2006-03-11 15:42 UTC (permalink / raw)
Neil Jerram <neil@ossau.uklinux.net> writes:
> William Xu <william.xwl@gmail.com> writes:
>
>> Hi,
>>
>> I'd like to control the completing candicates when doing readline
>> completion. For instance, suppose there's a variable
>> readline-completing-string with value "foo bar", then completions will
>> be based on either "foo" or "bar". Is there such a variable in readline?
>
> Yes, please see with-readline-completion-function in
> ice-9/readline.scm.
While this is a function? It seems the very variable is
*readline-completion-function*, but which is not exported from the
module?
Also, i have no clue how to contruct a proper `completer' for
with-readline-completion-function. The docstring is too simple...
--
William
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: about readline
2006-03-11 15:42 ` William Xu
@ 2006-03-11 17:03 ` Neil Jerram
2006-03-12 11:19 ` William Xu
0 siblings, 1 reply; 6+ messages in thread
From: Neil Jerram @ 2006-03-11 17:03 UTC (permalink / raw)
Cc: guile-user
William Xu <william.xwl@gmail.com> writes:
> While this is a function? It seems the very variable is
> *readline-completion-function*, but which is not exported from the
> module?
Yes. I guess the point is to protect the normal value of
*readline-completion-function* from being permanently lost. Is this
interface a problem in practice for you?
> Also, i have no clue how to contruct a proper `completer' for
> with-readline-completion-function. The docstring is too simple...
It is a bit odd, but basically follows the corresponding C interface.
Here's an example which worked some time ago for me. (I haven't
tested it recently.)
...
(with-readline-completion-function
(command-completion-function commands)
(lambda ()
...))
...
(define (command-completion-function commands)
;; commands is a list of strings representing the possible
;; completions.
(letrec ((cmds '())
(regexp #f)
(completer (lambda (text continue?)
(if continue?
(if (null? cmds)
#f
(let ((cmd (car cmds)))
(set! cmds (cdr cmds))
(if (string-match regexp cmd)
cmd
(completer text #t))))
(begin
(set! cmds commands)
(set! regexp
(string-append "^" (regexp-quote text)))
(completer text #t))))))
completer))
Regards,
Neil
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: about readline
2006-03-11 17:03 ` Neil Jerram
@ 2006-03-12 11:19 ` William Xu
2006-03-12 14:38 ` Neil Jerram
0 siblings, 1 reply; 6+ messages in thread
From: William Xu @ 2006-03-12 11:19 UTC (permalink / raw)
Neil Jerram <neil@ossau.uklinux.net> writes:
> William Xu <william.xwl@gmail.com> writes:
>
>> While this is a function? It seems the very variable is
>> *readline-completion-function*, but which is not exported from the
>> module?
>
> Yes. I guess the point is to protect the normal value of
> *readline-completion-function* from being permanently lost. Is this
> interface a problem in practice for you?
Hmm, not really. I think i'm okay with it at present.
>> Also, i have no clue how to contruct a proper `completer' for
>> with-readline-completion-function. The docstring is too simple...
>
> It is a bit odd, but basically follows the corresponding C interface.
> Here's an example which worked some time ago for me. (I haven't
> tested it recently.)
>
[...]
That works. Thanks. And i thought maybe this function can be included in
readline module. It is very useful.
--
William
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-03-12 14:38 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2006-03-11 14:56 about readline William Xu
2006-03-11 15:09 ` Neil Jerram
2006-03-11 15:42 ` William Xu
2006-03-11 17:03 ` Neil Jerram
2006-03-12 11:19 ` William Xu
2006-03-12 14:38 ` Neil Jerram
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