linux-kernel - Re: [RFC 0/1] mconf: Emacs-like isearch

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Date:   Wed, 6 Jun 2018 16:31:44 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Dirk Gouders <dirk@...ders.net>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 0/1] mconf: Emacs-like isearch

On 06/06/2018 03:32 PM, Dirk Gouders wrote:
> Randy Dunlap <rdunlap@...radead.org> writes:
> 
>> On 06/06/2018 02:56 PM, Dirk Gouders wrote:
>>> Hello,
>>>
>>> being an Emacs user, I frequently find myself pressing CTRL-s in mconf
>>> to search for some menu entry, especially in large menus.
>>>
>>> I decided to implement a basic isearch in mconf and would like to hear
>>> if others find this functionality useful, as well.
>>>
>>> The new functionality is started with pressing CTRL-s followed by
>>> characters that form the search string.  To search for further
>>> occurences of an entered string, press CTRL-s instead of further
>>> characters.
>>>
>>> For example: to navigate to the USB device drivers, press CTRL-s de ENTER ENTER usb ENTER ENTER
>>
>> Not being an emacs user, what is the "de" for above?
> 
> "de" (with my .config) causes a match for "Device Drivers" --
> no other menu entry matching the string "de" is befor that entry.
> 

Device Drivers is the first match for me also.

To get to the USB drivers, I have to enter:
	CTRL-s de ENTER ENTER CTRL-s usb ENTER ENTER

>>
>>> Pressing just CTRL-s subsequently results in line-by-line navigation
>>> through the menu (search for empty strings).
>>>
>>> The isearch is terminated by pressing either ESC ESC or ENTER.
>>>
>>> Because I expect that errors are found in the code and changes are requested, I
>>> completely left out the documentation part and will add it to V2
>>> should anyone find this functionality useful.
>>
>> Hm, it seems to take 2 entries of Ctrl-s to begin the search??
>> No, it takes 2 entries of Ctrl-s to display the "isearch:" prompt,
>> but entering one Ctrl-s + a string will display it also.
>>
>> Anyway, I am having trouble getting the USB drivers example to work.
> 
> Yes, I should have stated that this example explains what _I_ have to do to
> navigate to the USB device drivers.  Probably, "de" in your case matches
> some other menu entry and the navigation requires more or other input.
> 
> I'm sorry for causing confusion.

No problem.

Thanks.

> Dirk
> 
>>> Thanks,
>>>
>>> Dirk
>>>
>>> Dirk Gouders (1):
>>>   Emacs-like isearch for mconf.
>>>
>>>  scripts/kconfig/lxdialog/dialog.h  |   5 ++
>>>  scripts/kconfig/lxdialog/menubox.c | 140 ++++++++++++++++++++++++++++++++++++-
>>>  scripts/kconfig/lxdialog/util.c    |   1 +
>>>  3 files changed, 145 insertions(+), 1 deletion(-)
>>>
>>
>> thanks,


-- 
~Randy