#+title: Change log of Beframe
#+author: Protesilaos Stavrou
#+email: info@protesilaos.com
#+options: ':nil toc:nil num:nil author:nil email:nil

This document contains the release notes for each tagged commit on the
project's main git repository: <https://github.com/protesilaos/beframe>.

The newest release is at the top.  For further details, please consult
the manual: <https://protesilaos.com/emacs/beframe>.

* Version 1.2.0 on 2024-10-23
:PROPERTIES:
:CUSTOM_ID: h:c6250209-9bb9-4243-bec0-e925adeffaeb
:END:

Beframe is in a stable state. This version includes three new commands
as well as quality-of-life improvements.

** Assume or unassume buffers using a regular expression
:PROPERTIES:
:CUSTOM_ID: h:a9d20070-6d73-4033-9a9a-430b36e9b466
:END:

There two more commands to assume/unassume buffers from/to the current
frame:

- ~beframe-assume-buffers-matching-regexp~
- ~beframe-unassume-buffers-matching-regexp~

They both work by matching a regular expression against the global
list of buffer names. When called with a prefix argument, the regular
expression is matched against the buffer name or the name of the
buffer's major mode.

This is a convenient way to, for example, collect all email or IRC
buffers in a single frame and work with them as you will.

** Delete buffers matching a regular expression
:PROPERTIES:
:CUSTOM_ID: h:a1ad4562-3dfa-4483-b19a-08c0a9ef3e99
:END:

Following the same principle as above, we have the command
~beframe-kill-buffers-matching-regexp~. The regular expression is
matched against the buffer name or the name of the major mode when
called with a prefix argument.

Since this is a destructive operation, the command prompts for
confirmation to operate on the buffers it has found. Users who do not
like this check can set the new user option ~beframe-kill-buffers-no-confirm~
to a non-nil value.

Note that Emacs may still prompt for further confirmation if the given
buffer is unsaved, has a running process, and the like. Also note that
this operation applies to all frames because buffers are shared by the
Emacs session even though Beframe only exposes those that pertain to a
particular frame (when ~beframe-mode~ is enabled).

** Commands that assume/unassume buffers report on their status
:PROPERTIES:
:CUSTOM_ID: h:24b217b5-bf57-4b11-bbb4-014ac2ba4f2d
:END:

All relevant commands will now log a message about what they did. If,
for example, ~beframe-assume-buffers-matching-regexp~ assumes two new
buffers into the current frame, the message will be something like:

: Assumed into current frame 2 buffers: (name-of-buffer-one name-of-buffer-two)

Similarly:

: Unassumed from current frame 2 buffers: (name-of-buffer-one name-of-buffer-two)

If the command does not change the frame's buffer list, it will report
as much:

: Did not modify the frame's buffer list

** Several internal refinements
:PROPERTIES:
:CUSTOM_ID: h:1c5ed1dd-d7ec-43ad-a734-18162efc528a
:END:

- The way we derive the "global buffers" (buffers that are available
  in all frames, per the user option ~beframe-global-buffers~) is more
  efficient. Thanks to Bruno Boal for the contribution in pull request
  7: <https://github.com/protesilaos/beframe/pull/7>. Bruno has
  assigned copyright to the Free Software Foundation.

- We now have a single function to get a list of buffers, given
  certain parameters. Part of this work is by Bruno Boal, from the
  aforementioned pull request. The rest is from me, which includes the
  addition of the functionality about matching buffers with a regular
  expression (as seen in the new commands described herein).

- Inferring the name of a project among those known to =project.el= no
  longer fails when the path is abbreviated (like =~/path/to/repo=).
  Thanks to Fritz Grabo for the contribution and for Bruno Boal for
  double-checking it. This was done in pull request 6:
  <https://github.com/protesilaos/beframe/pull/6>. The change is
  small, meaning that Fritz does not need to assign copyright to the
  Free Software Foundation.

- The subroutines to assume/unassume buffers are consolidated into one
  function. It not only provides a single point of entry, but also
  takes care to carry out its operation only when it will yield a
  change to the current frame's buffer list.

* 1.1.0 on 2024-05-06
:PROPERTIES:
:CUSTOM_ID: h:6cdbd605-8a3c-4e71-849e-e17b75805b2f
:END:

This is a small release that adds some quality-of-life refinements to
a stable package.

** The ~beframe-global-buffers~ is more flexible
:PROPERTIES:
:CUSTOM_ID: h:ce67d817-c394-460f-af35-994459a8903b
:END:

This is a user option to specify which buffers should appear in all
frames. These "global" buffers are thus not associated only with the
frame in which they where displayed in.

Before, the value of this user option was a list of strings that were
matching buffer names literally. Now it is a list of strings which are
understood as regular expressions as well as a list of symbols
representing major modes.

Consider this example:

#+begin_src emacs-lisp
(setq beframe-global-buffers '("\\*scratch\\*" ".*notmuch.*" emacs-lisp-mode))
#+end_src

It matches a buffer with the literal name =*scratch*=, all buffers
that include =notmuch= in their name, and all buffers whose major mode
is ~emacs-lisp-mode~ or derived therefrom.

You can now more easily put all buffers in the global list, such as
for email or IRC.

** The ~beframe-prefix-map~ is now a command
:PROPERTIES:
:CUSTOM_ID: h:c50ef266-4bd2-4413-bca5-e8118c84586f
:END:

Before, this symbol was defined as a variable, which held the value of
the key bindings. Users where expected to bind this variable to a
key, such as:

#+begin_src emacs-lisp
(define-key global-map (kbd "C-c b") beframe-prefix-map)
#+end_src

This would set up =C-c b= as a prefix for all the key bindings inside
of ~beframe-prefix-map~. However, any changes to that map would not be
automatically included in the prefix. The above binding had to be
evaluated again (because we were binding a fixed value directly,
instead of having the indirection of a symbol that points to a value).

Now the ~beframe-prefix-map~ is implemented as a variable and a
command. The variable holds the value of the key bindings, while the
command is meant to be assigned to a key. For users, the change is
trivial:

#+begin_src emacs-lisp
(define-key global-map (kbd "C-c b") 'beframe-prefix-map)
#+end_src

Notice the added single quote before ~beframe-prefix-map~. While only
an extra character in the user's configuration, this is a major change
because any changes made to the key map will now be automatically
available under the defined prefix. No need to evaluate the key
binding again.

* 1.0.0 on 2023-11-17
:PROPERTIES:
:CUSTOM_ID: h:9a00ab34-a07f-4bb3-9397-6b1383fcebca
:END:

~beframe~ is in a stable state. This release formalises a set of
stability enhancements and quality-of-life improvements.

** The menu bar helps you discover Beframe commands
:PROPERTIES:
:CUSTOM_ID: h:e1aec53d-ed00-4eed-8763-78f7ad9c307d
:END:

A submenu with Beframe commands is available to users of
~menu-bar-mode~. It is available at =Buffers > BEFRAME buffers=. Check
the original announcement, which includes screenshots:
<https://protesilaos.com/codelog/2023-10-08-emacs-beframe-menu/>.

[ As an aside, never tell a new user to add ~(menu-bar-mode -1)~ to
  their Emacs init file. It is not helpful. ]

** The sample integration with ~consult~ can flip between recent buffers
:PROPERTIES:
:CUSTOM_ID: h:377b869e-a552-41e7-8e52-343a434a77af
:END:

In the manual of ~beframe~ there is a section about augmenting the
~consult-buffer~ command with a new source of beframed buffers
(buffers specific to the current frame). Edgar Vincent made a change
that sorts buffers by last viewed, meaning that the previous buffer is
at the top of the list. The change is within the ~15 line limit and
thus Edgar does not need to assign copyright to the Free Software
Foundation. Discussed on the mailing list:
<https://lists.sr.ht/~protesilaos/general-issues/%3C878r97fxmc.fsf%40protesilaos.com%3E>.

Refer to the manual for the code to integrate ~beframe~ with ~consult~:
<https://protesilaos.com/emacs/beframe#h:1c2d3d64-aa7b-4585-a418-ccedbb548b38>.

NOTE that you do not need ~consult~ to use ~beframe~: (i) the
~beframe-mode~ makes the regular ~switch-to-buffer~ work in a beframed
way and/or (ii) use the ~beframe-buffer-menu~ to get a list of the
beframed buffers (call the latter command with a prefix key (=C-u= by
default) to select a frame whose buffers you want to list).

** The ~beframe-rename-function~ can take a ~nil~ value
:PROPERTIES:
:CUSTOM_ID: h:d64e0861-15a7-40ad-8ece-aba232840fb8
:END:

This was always the intent, though the code did not honour it. Thanks
to Karthik Chikmagalur for reporting the bug on the mailing list:
<https://lists.sr.ht/~protesilaos/general-issues/%3C87a5w8yi1n.fsf%40gmail.com%3E>.

** General refinements
:PROPERTIES:
:CUSTOM_ID: h:494d4a62-567e-4886-af96-fa9e93e48083
:END:

- Commands that prompt for a frame (e.g. ~beframe-assume-frame-buffers~)
  no longer try to perform their work if a single Emacs frame is
  available. Instead, they return a ~user-error~.

- The buffer that was current when a new frame was created is no
  longer part of the new frame's buffer list. This means that the new
  frame starts clean, including only the buffer specified in the user
  option ~beframe-global-buffers~.

- The code that renames a new frame based is better at inferring the
  correct name. It now finds the =project.el= name, if available. The
  manual explains how to use Beframe with projects:
  <https://protesilaos.com/emacs/beframe#h:5b751614-8749-4aa8-aaed-f181beaddc57>
  (to me, this is a killer feature).

- Simplified how frames are set up. This guarantees that our functions
  are called in the desired order.

* 0.3.0 on 2023-05-21
:PROPERTIES:
:CUSTOM_ID: h:59120517-f6e0-4bb8-a495-c5eb40654d6a
:END:

** Use more descriptive names for assume/unassume commands
:PROPERTIES:
:CUSTOM_ID: h:a3b24770-40a2-4c97-8403-62bbf79720fa
:END:

Beframe limits the buffer list to buffers that are visited in the
current frame.  I provide commands to assume (add) or unassume
(remove) buffers from other frames, making for a powerful and flexible
workflow:

- In bulk :: Assume/unassume the (i) entire buffer list of a frame, or
  the (ii) consolidated buffer list of all frames.

- Selectively :: Use minibuffer completion to compile a list of
  buffers to assume/unassume (iii) from the given frame, or (iv)
  buffers from the consolidated buffer list.

The commands that operate selectively are renamed to better describe
what they do.  We thus have:

| Deprecated name                   | New name                                           |
|-----------------------------------+----------------------------------------------------|
| beframe-assume-buffers            | beframe-assume-frame-buffers-selectively           |
| beframe-assume-buffers-all-frames | beframe-assume-buffers-selectively-all-frames      |
| beframe-unassume-buffers          | beframe-unassume-current-frame-buffers-selectively |

To avoid potential confusion, the following command aliases are
discontinued:

- ~beframe-add-buffers~
- ~beframe-remove-buffers~
- ~beframe-add-frame-buffers~
- ~beframe-remove-frame-buffers~

** Provide the ~beframe-prefix-map~
:PROPERTIES:
:CUSTOM_ID: h:a34d0635-4022-41b0-bb41-3b6286c954cc
:END:

This is a keymap that binds the Beframe commands to recommended keys.
As with all Emacs key bindings, those are configurable.

I call it a "prefix" keymap because it is not bound anywhere and
cannot be used by default.  The user must explicitly bind it to a key,
which will be treated as a prefix key.  For example:

#+begin_src emacs-lisp
(define-key global-map (kbd "C-c b") beframe-prefix-map)
#+end_src

With the above code, =C-c b= becomes the prefix key that invokes
Beframe commands.  Type =C-c b C-h= to show the available key
bindings (by default =C-h= as a suffix to an incomplete key sequence
produces a Help buffer that links to all the available bindings).

The ~beframe-prefix-map~ and ~beframe-mode~ are used independent of
each other.

** Miscellaneous
:PROPERTIES:
:CUSTOM_ID: h:b5dcf56b-3668-4f3e-9743-771ce9b1eeb0
:END:

- Simplify how ~beframe-rename-function~ is added by the
  ~beframe-mode~.
- Refine the application of ~beframe-create-frame-scratch-buffer~ by
  the ~beframe-mode~.
- Tweak the ~beframe-buffer-sort-visibility~ function to be consistent
  with the style of =beframe.el=.
- Rewrite parts of the manual to reference the aforementioned.

* 0.2.0 on 2023-03-27
:PROPERTIES:
:CUSTOM_ID: h:ba53a28d-7e85-4c9b-9770-22abb9263473
:END:

There were no release notes for the initial version of Beframe.  Watch
the video demo I produced on 2023-02-28 to get an overview of what
this package is all about:
<https://protesilaos.com/codelog/2023-02-28-emacs-beframe-demo/>.

In short: beframe your buffers, not your outlook.  Oops that is for
the philosophy blog! 🙃

** A beframed buffer menu
:PROPERTIES:
:CUSTOM_ID: h:345543c7-f61c-4656-964e-53f338ec7850
:END:

The command ~beframe-buffer-menu~ produces a dedicated buffer with a
list of buffers for the current frame.  This is the counterpart of
~beframe-switch-buffer~.  When called with a prefix argument (=C-u=
with default key bindings), it prompts for a frame whose buffers it
will display.

** Frame-specific scratch buffer
:PROPERTIES:
:CUSTOM_ID: h:69df2c63-c509-4063-bf24-b6aa39c6cfca
:END:

The user option ~beframe-create-frame-scratch-buffer~ allows
~beframe-mode~ to create a frame-specific scratch buffer that runs the
~initial-major-mode~.  This is done upon the creation of a new frame
and the scratch buffer is named after the frame it belongs to.  For
example, if the frame is called =modus-themes=, the corresponding
scratch buffer is =*scratch for modus-themes*=.  Set this user option
to ~nil~ to disable the creation of such scratch buffers.

The user option ~beframe-kill-frame-scratch-buffer~ is the counterpart
of ~beframe-create-frame-scratch-buffer~.  It kills the frame-specific
scratch buffer after the frame is deleted.  Set this user option to
~nil~ to disable the killing of such buffers.

** Assuming and unassuming buffers
:PROPERTIES:
:CUSTOM_ID: h:b0546404-2e70-44e4-84c9-e7fbf0786d04
:END:

Beframe makes it possible to add or remove buffers from the list of
buffers associated with the current frame.  This provides for a
flexible workflow where buffers can be initially beframed yet
consolidated into new lists on demand.

*** Assuming buffers
:PROPERTIES:
:CUSTOM_ID: h:4ec70ff0-531c-4a9c-9509-0ee49d26da71
:END:

To assume buffers is to include them in the buffer list associated
with the current frame.

- The command ~beframe-assume-frame-buffers~ (alias
  ~beframe-add-frame-buffers~) prompts for a frame and then copies its
  buffer list into the current frame.

- The command ~beframe-assume-buffers~ (alias ~beframe-add-buffers~)
  adds buffers from a given frame to the current frame.  In
  interactive use, the command first prompts for a frame and then asks
  about the list of buffers therein.  The to-be-assumed buffer list is
  compiled with ~completing-read-multiple~.  This means that the user
  can select multiple buffers, each separated by the ~crm-separator~
  (typically a comma).

- The command ~beframe-assume-buffers-all-frames~ prompts with
  minibuffer completion for a list of buffers to assume.  The
  interface is the same as that of ~beframe-assume-buffers~ except
  that there is no prompt for a frame: buffers belong to the
  consolidated buffer list (all frames).

- The command ~beframe-assume-all-buffers-no-prompts~ unconditionally
  assumes the consolidated buffer list.

*** Unassuming buffers
:PROPERTIES:
:CUSTOM_ID: h:b98f5c92-23d6-464a-9001-9531e513dd73
:END:

To unassume buffers is to omit them from the buffer list associated with
the current frame.

- The command ~beframe-unassume-frame-buffers~ (alias
  ~beframe-remove-frame-buffers~) prompts for a frame and then removes
  its buffer list from the current frame.

- The command ~beframe-unassume-buffers~ (alias
  ~beframe-remove-buffers~) removes buffers from the current frame.
  In interactive use, the to-be-unassumed buffer list is compiled with
  ~completing-read-multiple~.  This means that the user can select
  multiple buffers, each separated by the ~crm-separator~ (typically a
  comma).

- The command ~beframe-unassume-all-buffers-no-prompts~ unconditionally
  unassumes the consolidated buffer list, but preserves the list
  stored in the user option ~beframe-global-buffers~.

** Sort beframed buffers from Lisp
:PROPERTIES:
:CUSTOM_ID: h:a72b304d-4dc4-48c2-8d29-7ccac1984422
:END:

This is courtesy of Tony Zorman:
<https://lists.sr.ht/~protesilaos/general-issues/%3C87edq4n3qt.fsf%40hyperspace%3E>.

#+begin_quote
commit dfa4678c208e1e5c41413f2d39416f84c21f28ff
Author: Tony Zorman <soliditsallgood@mailbox.org>
Date:   Sat Mar 4 11:48:17 2023 +0100

  Add the ability to sort the buffer list

  Some completion libraries, like consult, give the user the option to
  sort the list of buffers according to some strategy.  For example,
  sorting by visibility—in the sense that one is first shown hidden
  buffers, then visible ones, and only then the current buffer—may be
  preferrable when deciding to switch buffers via consult-buffer.

  Since beframe.el can be used as a consult source (see the manual),
  endowing beframe--buffer-list with an arbitrary sort function greatly
  improves the synergy between the two libraries.

 beframe.el | 56 ++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 42 insertions(+), 14 deletions(-)
#+end_quote

The manual explains how this works in practice:
<https://protesilaos.com/emacs/beframe#h:1c2d3d64-aa7b-4585-a418-ccedbb548b38>.
Thanks to Tony Zorman for including the reference to the sorting mechanism!
