* How to travel into the future?
@ 2017-02-14 8:54 Marcin Borkowski
2017-02-14 9:05 ` Yuri Khan
2017-02-14 14:39 ` Drew Adams
0 siblings, 2 replies; 3+ messages in thread
From: Marcin Borkowski @ 2017-02-14 8:54 UTC (permalink / raw
To: Help Gnu Emacs mailing list
Hi list,
I'd like to use in my code the M-n facility in history to enable the
user to have access to a reasonable default value, as described in
(info "(emacs) Minibuffer History").
How should I do it? Should I use read-string? If so, do I have to put
the default into the history variable and use the (HISTVAR . POSITION)
argument to read-string? If so, should I then manually delete the
default (which might have been used or not by the user) from the history
variable afterwards?
Any pointers?
TIA,
--
Marcin Borkowski
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to travel into the future?
2017-02-14 8:54 How to travel into the future? Marcin Borkowski
@ 2017-02-14 9:05 ` Yuri Khan
2017-02-14 14:39 ` Drew Adams
1 sibling, 0 replies; 3+ messages in thread
From: Yuri Khan @ 2017-02-14 9:05 UTC (permalink / raw
To: Marcin Borkowski; +Cc: Help Gnu Emacs mailing list
On Tue, Feb 14, 2017 at 3:54 PM, Marcin Borkowski <mbork@mbork.pl> wrote:
> I'd like to use in my code the M-n facility in history to enable the
> user to have access to a reasonable default value, as described in
> (info "(emacs) Minibuffer History").
> How should I do it? Should I use read-string? If so, do I have to put
> the default into the history variable and use the (HISTVAR . POSITION)
> argument to read-string? If so, should I then manually delete the
> default (which might have been used or not by the user) from the history
> variable afterwards?
As far as I understand: (describe-function 'read-string)
Fourth arg DEFAULT-VALUE is the default value or the list of default values.
If non-nil, it is used for history commands, and as the value (or the first
element of the list of default values) to return if the user enters the
empty string.
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: How to travel into the future?
2017-02-14 8:54 How to travel into the future? Marcin Borkowski
2017-02-14 9:05 ` Yuri Khan
@ 2017-02-14 14:39 ` Drew Adams
1 sibling, 0 replies; 3+ messages in thread
From: Drew Adams @ 2017-02-14 14:39 UTC (permalink / raw
To: Marcin Borkowski, Help Gnu Emacs mailing list
> I'd like to use in my code the M-n facility in history to enable the
> user to have access to a reasonable default value, as described in
> (info "(emacs) Minibuffer History").
> How should I do it? Should I use read-string? If so, do I have to put
> the default into the history variable and use the (HISTVAR . POSITION)
> argument to read-string? If so, should I then manually delete the
> default (which might have been used or not by the user) from the history
> variable afterwards?
>
> Any pointers?
Just provide a list of default values (strings) as argument
DEFAULT to `completing-read', `read-string', or similar.
`C-h f read-string':
Fourth arg DEFAULT-VALUE is the default value or the list of default values.
If non-nil, it is used for history commands, and as the value (or the first
element of the list of default values) to return if the user enters the
empty string.
^ permalink raw reply [flat|nested] 3+ messages in thread
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