GNU bug report logs - #59212
29.0.50; [PATCH] Set default value of bookmark Type

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From: Gabriel <gabriel376 <at> hotmail.com>
To: 59212 <at> debbugs.gnu.org
Subject: bug#59212: 29.0.50; [PATCH] Set default value of bookmark Type
Date: Sat, 12 Nov 2022 17:55:41 -0300

Stefan Kangas <stefankangas <at> gmail.com> writes:
> I'm not Karl, but I've experimented with something similar before and I
> found two things:
>
> 1. I had to add a type for Dired bookmarks (which are not Files) to
>    avoid confusion.
>
> 2. Using a default name (I also used "Files", IIRC), just made my long
>    list of bookmarks more busy with little benefit.  If anything, it
>    made it harder to navigate, as it was harder to make out the
>    "special" types of bookmarks.
>
> So all in all, I was not a huge fan of the change.
>
> If we want to add this, I suggest adding a defcustom so that users can
> enable or disable this functionality to their liking (or change "Files"
> into something else).  I might prefer to disable it, for example.

1. Good point about Dired. Would be nice to have a Type for regular
files and another one for directories. Is there any approach to
differentiate files from directories that do not rely on IO calls? Some
kind of portable string-check, I guess. I am aware of 'file-directory-p'
and 'file-regular-p', but both will try to read FILENAME, which could
degrade performance in case of long Bookmark lists (and there is also
Tramp).

2. Thanks for the inputs. It's not clear for me what do you mean by
"more busy" or "harder to navigate". How do you normally navigate in
long Bookmark lists? What are the use-cases where a visual distinction
between empty and non-empty strings of the Type column is useful? What
about the distinction between Types Eshell, DocView and VC, where the
user has to read the contents of the Type column?

I am against adding a new defcustom for such trivial thing, Emacs has
already too much. I think this proposed change is a better default to
novices, and advanced users can add an advice around
bookmark-type-from-full-record. If we want to customize this behavior, I
propose something like a defcustom that offers an alist of
'((TYPE . DISPLAY-STRING)).

I also suggest to add a new 'type choice to bookmark-sort-flag, which I
can do in a new wishlist.

---
Gabriel

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