How to get isearch-string, but only if I was in isearch?

How to get isearch-string, but only if I was in isearch?

[Marcin Borkowski]

Hi all,

I'd like my command to use isearch-string as a default value, but only
if that command was triggered (using M-x, for instance) during isearch.
I tried this naive approach:

(when (memq last-command '(isearch-forward isearch-backward))
  isearch-string)

to no avail, since it turned out that last-command was (in my case)
isearch-printing-char.  Is there a way for an Emacs command to "know"
that isearch was active when it was invoked?  (I could use an approach
similar to the above, but with a longer list of commands, including
most/all things from isearch-mode-map, but this seems fragile and far
from elegant.)

A similar thing to what I want happens with M-% and C-M-% during
isearch, but AFAICT these are just bound to special "wrapper" commands
in isearch-mode-map, and I don't want to have to bind my command to any
key (I use it seldom enough that I just use M-x).

TIA,

--
Marcin Borkowski

Re: How to get isearch-string, but only if I was in isearch?

[Michael Heerdegen]

Marcin Borkowski <mbork@mbork.pl> writes:

> Is there a way for an Emacs command to "know" that isearch was active
> when it was invoked?

Looking at how things are implemented...maybe there isn't.

>  (I could use an approach similar to the above, but with a longer list
> of commands, including most/all things from isearch-mode-map, but this
> seems fragile and far from elegant.)

Maybe you could use `isearch-mode-end-hook' in some clever way?


Regards,

Michael.

Re: How to get isearch-string, but only if I was in isearch?

[Marcin Borkowski]

On 2017-02-13, at 02:41, Michael Heerdegen <michael_heerdegen@web.de> wrote:

> Marcin Borkowski <mbork@mbork.pl> writes:
>
>> Is there a way for an Emacs command to "know" that isearch was active
>> when it was invoked?
>
> Looking at how things are implemented...maybe there isn't.

Well, after I sent my message, it occurred to me that I could check if
the first 7 characters of (symbol-name last-command) are "isearch".  Not
exactly a clean method (neither extremely reliable), but might work.

>>  (I could use an approach similar to the above, but with a longer list
>> of commands, including most/all things from isearch-mode-map, but this
>> seems fragile and far from elegant.)
>
> Maybe you could use `isearch-mode-end-hook' in some clever way?

Hm.  I could use it to set 'this-command to 'isearch.  I wonder what
could break then, though...

> Regards,
>
> Michael.

Thanks a lot!

-- 
Marcin Borkowski

Re: How to get isearch-string, but only if I was in isearch?

[Marcin Borkowski]

On 2017-02-13, at 06:09, Marcin Borkowski <mbork@mbork.pl> wrote:

> On 2017-02-13, at 02:41, Michael Heerdegen <michael_heerdegen@web.de> wrote:
>
>> Marcin Borkowski <mbork@mbork.pl> writes:
>>
>>> Is there a way for an Emacs command to "know" that isearch was active
>>> when it was invoked?
>>
>> Looking at how things are implemented...maybe there isn't.
>
>> Maybe you could use `isearch-mode-end-hook' in some clever way?
>
> Hm.  I could use it to set 'this-command to 'isearch.  I wonder what
> could break then, though...

Correction: 'last-command.  See here for a solution:
http://mbork.pl/2017-02-18_Using_isearch-string_on_exit_from_isearch

Thanks,

--
Marcin Borkowski