bug#34873: 27.0.50; Creating unibyte string in emacs modules

[lg.zevlg@gmail.com]

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16 марта 2019 г., в 8:30, Eli Zaretskii <eliz@gnu.org> написал(а):

>> From: Evgeny Zajcev <lg.zevlg@gmail.com>
>> Date: Fri, 15 Mar 2019 23:52:17 +0300
>> 
>> There is no possibility to create unibyte strings from emacs modules in order to create some binary data
>> representation
>> 
>> The only solution for now is to call `make_string` method and then apply `encode-coding-string' with utf-8
>> encoding to the result.  But on large data this became very slow
>> 
>> I used this patch to bypass the conversion steps and it works pretty nice
>> 
>> Ideally I would like to use user-ptr objects as `:data' in image specification, but solution with `make_data'
>> module method will be suitable enough
> 
> Please explain why you need to create a unibyte string for that.  I
> guess what's missing is more details regarding what you are trying to
> do (the single sentence above about :data wasn't enough for me), and
> how is your module involved in that, in particular why do you need a
> module to display an image in Emacs.

See this thread https://lists.gnu.org/archive/html/emacs-devel/2019-03/msg00465.html

I need this module, because all existing packages to manipulate images are not capable enough for me

—
lg


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