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Variable: `persp-avoid-killing-last-buffer-in-perspective`, default `t`; this
was formerly the experimental feature flag
`persp-feature-flag-prevent-killing-last-buffer-in-perspective` which defaulted
to `nil`.
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Discussion: https://github.com/nex3/perspective-el/issues/180.
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Remove leading tab.
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New ert test designed to test 'persp-switch-to-scratch-buffer'.
Test switching to a perspective's scratch buffer. Test if the scratch
buffer is created when there isn't one.
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Utility function to switch to the current perspective's scratch
buffer, or to create one if it does not exist yet. Add binding
"C-x x B" to call 'persp-switch-to-scratch-buffer'.
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Call 'persp-get-scratch-buffer', when needed, to get/create a
perspective's scratch buffer. The former function is able to
properly set a newly created perspective's scratch buffer.
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Test that the function 'persp-get-scratch-buffer' can get a scratch
buffer from different perspectives without modifying it. Test that
its created scratch buffer is conformant to a default scratch buffer.
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Delegate 'persp-get-scratch-buffer' to get/create a perspective's
scratch buffer named "*scratch* (NAME)". Modify 'persp-new' into
using this new function.
When a scratch buffer is created by 'persp-get-scratch-buffer' it
is properly set. An existing buffer is returned as is.
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Like 'command-line' does, enable the 'initial-major-mode' in the
scratch buffer only when the buffer is in 'fundamental-mode'.
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Like 'command-line-1' does, we need to 'substitute-command-keys' in
'initial-scratch-message'. Unsetting the scratch buffer's modified
flag is also a good idea.
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Use 'persp-new' directly to get an existing perspective, or to create
a new one.
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Do not modify an existing perspective, just return it. If the
perspective doesn't exist, create a new one.
A perspective's scratch buffer is not re-created, and the list
of buffer is preserved as is when the perspective exists.
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New ert test that verifies that the created scratch buffer conforms
to the startup scratch buffer.
The scratch buffer should be created with 'initial-scratch-message'
command key descriptions resolved to command names. Also, its mode
should be 'initial-major-mode'. It shouldn't have a modified flag.
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Use 'persp-forget-buffer' rather than 'persp-remove-buffer' to
disassociate a buffer with other perspectives.
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Use 'persp-forget-buffer' rather than 'persp-remove-buffer' to
disassociate a buffer with other perspectives.
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Update docstring. Use 'persp-forget-buffer' to disassociate a buffer
that is shared with other perspectives.
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Test 'persp-forget-buffer' and 'persp-remove-buffer', also test the
function 'persp-set-buffer'.
The function 'persp-forget-buffer' should disassociate buffers with
perspectives, never killing them.
The function 'persp-remove-buffer' should disassociate buffers when
they are shared between perspectives and kill unshared buffers, aka
buffers not found in any other perspective.
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New function to disassociate a buffer with the current perspective,
without killing it when it's not left in any perspective.
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Prevent killing or removing the last buffer left in perspectives,
unless a perspective is killed, to avoid adding a buffer of other
perspectives to the perspective where the last buffer is removed.
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A buffer should not be killable when it's a perspective's last left
buffer. This prevents adding a buffer from another perspective. A
perspective can be killed, though, even if it has only one buffer.
It should be possible to remove buffers from perspectives, unless a
buffer is the perspective's last left buffer.
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Up to Emacs 27.2, 'switch-to-buffer-preserve-window-point' allows
'delete-window' to update 'window-prev-buffers' of all windows if
it isn't set to nil.
After calling 'persp-reset-windows', 'window-prev-buffers' should
be empty to prevent perspectives from pulling in buffers of other
perspectives.
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A dirty 'window-prev-buffers' may allow a perspective to pull in
buffers from other perspectives.
Till Emacs 27.2, 'delete-window' may update 'window-prev-buffers'
for all windows. This means that after 'persp-reset-windows' the
single window left may end up with a dirty 'window-prev-buffers',
unless 'switch-to-buffer-preserve-window-point' is nil.
Upstream commit 8f63f0078a23421eada97b4da51b9308b82532ce reverted
window/winner changes (Revert 0454bfd3313) in Emacs (bug#23621).
So, what said above should not apply any more after that commit,
and 'switch-to-buffer-preserve-window-point' could not be used."
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A one way loop, with pre-defined start and end, prevents any infinite
ping-pong.
This is not just syntactic sugar. In a "while buried buffer found in
window" loop, there is the risk that when the buffer is buried in one
window, it may be un-buried in another (for "mystic" reasons) and the
loop will never end.
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If burying the 'current-buffer' inside 'with-selected-window', then
force update the current buffer after, since 'with-selected-window'
may restore the buried buffer as current buffer after executing its
BODY.
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Before executing BODY, 'make-persp' saves the current buffer, and then
restores it after. Hence, if the 'current-buffer' is changed in BODY,
that change is lost. Notify this in the docstring.
Force 'persp-activate' to update the current buffer with the buffer in
the current window.
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Switching to a new perspective should set the 'current-buffer' to the
perspective's scratch buffer. Removing a buffer should switch to the
next one available in the perspective setting it as current buffer.
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Follow the style used for 'persp-add-buffer'. BUFFER-OR-NAME is a
standard name for an argument that could either be a buffer or the
buffer's name. The logic of the function remains unchanged except
that a killed buffer passed as argument is discarded now.
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Thoroughly test 'persp-set-buffer'. It should not allow to share
buffers between perspectives, and a non-existing buffer passed as
argument should be discarded.
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Do not accept unexisting buffers as argument. If the buffer doesn't
exist or was killed, discard it and display a reminder.
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Thoroughly test 'persp-add-buffer'. It should allow to share buffers
between perspectives, a non-existing buffer passed as argument should
be discarded.
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Test the utility function 'persp-get-buffer-names'. Expect the list
of a perspective's live buffers.
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New utility function to return a perspective's list of live buffers
for a specific frame or for the selected one. As argument, accepts
a name or a proper perspective data, if nil or if not given default
to the current perspective. If a frame is nil or not given default
to the selected frame.
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