Modified isearch

Modified isearch

[Peter West]

I want to bind a variation of isearch to the C-c R key, based on 
comments in the Emacs Wiki page on isearch. Here are the suggestions 
from the wiki for leaving point at the beginning of the match.

     (add-hook 'isearch-mode-end-hook 'my-goto-match-beginning)
     (defun my-goto-match-beginning ()
       (when (and isearch-forward isearch-other-end)
         (goto-char isearch-other-end)))
     (defadvice isearch-exit (after my-goto-match-beginning activate)
       "Go to beginning of match."
       (when (and isearch-forward isearch-other-end)
         (goto-char isearch-other-end)))
With this hook, both ‘C-g’ and ‘RET’ exit the search at the begining of 
the search string.
...
Another way to get the functionality of jumping to the beginning of the 
search-term is simply adding a little wrapper function and binding it to 
a different key. I find C-v a good candidate, you don’t usually want to 
jump to next page when searching:

     (define-key isearch-mode-map (kbd "C-v") 
'my-isearch-forward-to-beginning)
     (defun my-isearch-forward-to-beginning ()
       "Do a forward search and jump to the beginning of the search-term."
       (interactive)
       (isearch-repeat 'forward)
       (goto-char isearch-other-end))

----------------

What I want to do is to invoke normal isearch and isearch-regexp 
functions (forward functions at least), and have the mark reset to the 
beginning of the matched text. So I tried this:


  (define-key search-map (kbd "C-c R") 'my-set-mark-point-around-isearch)
      (defun my-set-mark-point-around-isearch ()
        "Do a forward search and set mark to the beginning of the 
search-term."
        (interactive)
        (isearch-forward)
        (push-mark isearch-other-end))


No luck.  Can anyone advise me of the way to achieve this?

Thanks.

P

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RE: Modified isearch

[Drew Adams]

> What I want to do is to invoke normal isearch and isearch-regexp
> functions (forward functions at least), and have the mark reset to
> the beginning of the matched text.  Can anyone advise me of the
> way to achieve this?

Yes, just use Isearch+:

http://www.emacswiki.org/cgi-bin/wiki/IsearchPlus#isearchp-set-region-flag

Set option `isearchp-set-region-flag' to non-nil.
That automatically sets the region around the last search target.

And you can toggle this behavior anytime during Isearch, using
`C-SPC' (bound to command `isearchp-toggle-set-region').

And you can manually set the region around the last search
target using `M-x set-region-around-search-target'.

Re: Modified isearch

[Michael Heerdegen]

Peter West <lists@pbw.id.au> writes:

> What I want to do is to invoke normal isearch and isearch-regexp
> functions (forward functions at least), and have the mark reset to the
> beginning of the matched text. So I tried this:
>
>
>  (define-key search-map (kbd "C-c R") 'my-set-mark-point-around-isearch)
>      (defun my-set-mark-point-around-isearch ()
>        "Do a forward search and set mark to the beginning of the
> search-term."
>        (interactive)
>        (isearch-forward)
>        (push-mark isearch-other-end))
>
>
> No luck.

Works well for me.  When I hit C-x C-x is see that the mark has been set
accordingly.  Or do you want the region to be activated?  Then use the
third argument of `push-mark'.


Regards,

Michael.

Re: Modified isearch

[Peter West]

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Thanks Drew.

That will do nicely.

I would still like, at some time, to understand isearch and elisp well enough to be able to write such a function as required.


Peter West

...for he had healed many, and all who had diseases pressed upon him, to touch him.

On 24 Jan 2014, at 3:28 am, Drew Adams <drew.adams@oracle.com> wrote:

>> What I want to do is to invoke normal isearch and isearch-regexp
>> functions (forward functions at least), and have the mark reset to
>> the beginning of the matched text.  Can anyone advise me of the
>> way to achieve this?
> 
> Yes, just use Isearch+:
> 
> http://www.emacswiki.org/cgi-bin/wiki/IsearchPlus#isearchp-set-region-flag
> 
> Set option `isearchp-set-region-flag' to non-nil.
> That automatically sets the region around the last search target.
> 
> And you can toggle this behavior anytime during Isearch, using
> `C-SPC' (bound to command `isearchp-toggle-set-region').
> 
> And you can manually set the region around the last search
> target using `M-x set-region-around-search-target'.


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RE: Modified isearch

[Drew Adams]

> Thanks Drew.  That will do nicely.
> 
> I would still like, at some time, to understand isearch and elisp well
> enough to be able to write such a function as required.

With that ambition, you surely will.  FWIW, I too am still learning
when it comes to the Isearch code (as well as other libraries).
Fortunately, there are plenty of others who understand more and are
helpful.  And most important of all is the availability of the source
code.  Thank sharing and free software for that.