Re: Improving JSON pretty printing, how to represent floats?

["Herman, Géza" <geza.herman@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Herman, Géza <geza.herman@gmail.com>
>> Cc: Géza Herman <geza.herman@gmail.com>,
>>  emacs-devel@gnu.org
>> Date: Fri, 05 Apr 2024 15:16:44 +0200
>>
>>
>> Eli Zaretskii <eliz@gnu.org> writes:
>>
>> What if I open a .json file because I want to edit it a little 
>> bit
>> (renaming some members, etc.), but then I realize that the 
>> format of
>> the json is bad, so I reformat it.  But I want to maintain the
>> precision, because I intend to use the .json in some other 
>> software
>> which supports arbitrary floating point precision.
>
> Well, you can't.  It makes no sense.  Floats are objects with 
> certain
> semantics, they are not just arbitrary strings.

I wrote "arbirary floating point precision", not arbitrary string. 
There are libraries which work with arbirary precision floating 
point values, and I'm sure that there are JSON files which contain 
such numbers.  If a scientist uses Emacs to format their JSON 
files, they might get surprised that their values in the JSON file 
will be modified during a pretty formatting process. Again, this 
is simply a bad behavior.

Anyways, it don't want to argue about this further.  It's clear as 
day to me that a formatter should not change values in a JSON 
file, you have other opinion.

I thought that it made sense to improve this in Emacs (as it seems 
pretty trivial to do), but then I won't.