* lisp/progmodes/project.el (project--read-file-name): Signal a
user-error and don't call project-read-file-name-function if the
file name collection is empty, since the default options for
project-read-file-name-function expect a cons (bug#80509).
(project-find-file-in): Avoid redundant consing for
vc-directory-exclusion-list in default case of include-all=nil.
* lisp/progmodes/project.el (vc-git-project-list-files): Prefer
git ls-files --deduplicate, available since Git 2.31 (2021), over
delete-consecutive-dups. Prefer string-prefix-p and string-suffix-p
over slower and more error-prone regexp matching. Prefer
string-match-p over string-match when either will do.
* lisp/progmodes/project.el (project--delete-zombie-projects):
Bind tramp-error-show-message-timeout to nil, to instruct Tramp
not to display the "failed to connect" and its message, hiding the
current prompt (bug#80340).
project-try-vc--search in a submodule directory tries to find the git
root directory, so the local variable root would be set to nil if it
didn't exist. Calling project--vc-merge-submodules-p on nil would lead
to a crash, so now the while loop aborts beforehand.
* lisp/vc/vc-hooks.el (vc-find-backend-function): Require vc for
default implementations (bug#80254). Report and fix due to
Daniel Mendler <mail@daniel-mendler.de>.
* lisp/progmodes/project.el: Describe the new cache in Commentary,
the "VC-aware project" section.
(project-vc-cache-timeout)
(project-vc-non-essential-cache-timeout): New variables.
(project--get-cached, project--set-cached):
New functions.
(project-try-vc, project--value-in-dir): Use them.
(project--read-dir-locals): New function, extracted from the
above. Return the full alist, to be saved to cache at once.
(project--clear-cache): New function.
(project-remember-projects-under)
(project-forget-zombie-projects, project-forget-projects-under):
Use it.
(project-uniquify-dirname-transform, project-mode-line-format):
Bind 'non-essential' to choose the longer caching strategy.
(project-name-cache-timeout, project-name-cached): Remove.
(project-mode-line-format): Switch to calling 'project-name'
directly, with the new caching in use.
Co-authored-by: Juri Linkov <juri@linkov.net>
* lisp/progmodes/project.el (project--remove-from-project-list):
Don't call 'abbreviate-file-name', expect it to be abbreviated
already. The file might be on an inaccessible filesystem.
(project-current): Call abbreviate-file-name here (bug#80340).
Optionally use find and grep directly instead of going through the
Semantic framework (bug#80246).
* lisp/progmodes/project.el (project--vc-ignores): Require 'vc' to
ensure that vc-default-ignore-completion-table is available.
* lisp/progmodes/xref.el (xref-references-in-directory-function):
New user option.
(xref-references-in-directory): Call it.
(xref-references-in-directory-grep): Implementation based on find/grep.
(xref-references-in-directory-semantic): Implementation using Semantic.
(xref-matches-in-directory): Add new argument DELIMITED.
Co-authored-by: Dmitry Gutov <dmitry@gutov.dev>
* etc/NEWS:
* doc/emacs/maintaining.texi (Projects):
* lisp/progmodes/project.el (project-mode-line): Update
documentation due to changes in bug#78545.
(project-name-cache-timeout): New variable.
(project-name-cached): New function (bug#78545).
(project-mode-line): New value 'non-remote'.
(project-mode-line-format): Don't show the remote project's name
when 'project-mode-line' is 'non-remote'. Use 'project-name-cached'.
Discussed in
https://lists.gnu.org/archive/html/emacs-devel/2025-12/msg00903.html.
* lisp/progmodes/project.el (project-files) <vc>: Look up the
value of 'project-vc-ignores' inside DIR rather than project root.
This allows this variable to be applied in external dirs as well.
(project-ignores) <vc>: Do likewise.
(project--value-in-dir): Ensure that DIR has a trailing slash.
The caller might pass the value without slash if produced
differently.
* test/lisp/progmodes/project-tests.el
(project-vc-ignores-in-external-directory): New test.
(project-vc-supports-files-in-subdirectory): Update the test,
considering the subtle change in behavior: the directory DIR
directly includes a .dir-locals.el which sets project-vc-ignores,
which wasn't previously applied because it wasn't set in the root.
Rework the implementation of `project-files<vc>` so as to
delegate more to the `project-list-files` operation, including
the default implementation.
This can change the behavior in some cases, because it changes
which ignore settings apply where and also it can now use
a dedicated VC backend implementation even for directories
that are outside of the project's root. But the effect should
hopefully be marginal and rather positive by making the behavior
more "regular".
* lisp/progmodes/project.el (project-vc--backend): New function.
(project-files) <vc>: Use it. Call VC's `project-list-files` operation
for all dirs with a backend and remove the `vc-not-supported` fallback.
Inline the `project--dir-ignores` call.
(vc-default-project-list-files): New function, extracted from
`project-files<vc>`.
(vc-git-project-list-files): Use it instead of signaling `vc-not-supported`.
(project--vc-ignores): New function, extracted from `project-ignores<vc>`.
Remove the `vc-not-supported` since the operation has a default
implementation. Use DIR's `ignore-completion-table` regardless
if we're at the root of the project.
(project-ignores) <vc>: Use it.
This reverts commit 821c0d36df.
Despite re-enacting what the modern Git versions seem to do under the
covers, the effect is not the same: filtering works differently.
* lisp/progmodes/project.el (project--vc-list-files):
Call backend function 'project-list-files'.
(project-files): Catch 'vc-not-supported' and default to
'project--files-in-directory' using the current project.
(vc-git-project-list-files, vc-hg-project-list-files):
New functions, extracted from 'project--vc-list-files'.
(https://lists.gnu.org/archive/html/emacs-devel/2025-12/msg00290.html)
* lisp/progmodes/project.el (project-files):
Use 'file-in-directory-p' to dispatch to 'project--vc-list-files'
when listing subdirectory files too (bug#79809).
* lisp/vc/vc-hooks.el (vc-file-setprop): Use cl-pushnew.
(vc--repo-setprop, vc--repo-getprop, vc--repo-clearprops): New
functions.
* lisp/vc/vc.el (vc--incoming-revision): Cache incoming
revisions.
* src/fns.c (Fput): State that VALUE is returned.
* lisp/progmodes/project.el (project-compile): Handle ignoring
compile-command from a vc-compilation-mode buffer in a way that
does not involve let-binding compile-command.
* lisp/progmodes/project.el (project-compile): Ignore
compile-command from vc-compilation-mode (bug#79658).
* lisp/vc/vc-dispatcher.el (vc-compilation-mode-hook): New
variable.
(vc-compilation-mode): Promote to its own derived mode. Don't
use define-derived-mode in order to preserve the BACKEND
argument to this function. Don't give it its own major mode
map, et cetera, for now.
* lisp/progmodes/project.el (project-prompter)
(project-prompt-project-dir, project-prompt-project-name):
* lisp/vc/vc.el (vc--prompt-other-working-tree): New ALLOW-EMPTY
optional argument.
(delete-working-tree, move-working-tree): Specify that callers
must ensure DIRECTORY is not the current working tree.
(vc-delete-working-tree, vc-move-working-tree): Pass ALLOW-EMPTY
non-nil to vc--prompt-other-working-tree. Bind
'default-directory' to another working tree when operating on
the current working tree.
(vc-delete-working-tree): Extra prompt when asked to delete the
current working tree. When deleting the current working tree,
call 'bury-buffer' one or more times at the end.
* lisp/progmodes/project.el: Fall back to adding 'project-buffer'
to 'completion-category-defaults' if 'define-completion-category'
is not available (bug#79409).
* lisp/vc/diff-mode.el (diff-find-matching-buffer): Rename ...
* lisp/progmodes/project.el
(project-change-to-matching-directory): ... to here. All uses
changed.
* lisp/vc/log-view.el (project-change-to-matching-directory):
Declare.
(log-view-mode): Use it.
* doc/emacs/vc1-xtra.texi (Other Working Trees): Document the
change.
* lisp/minibuffer.el (define-completion-category): New function.
(completion-category-get): New function, implements completion
category property lookup with (multiple) inheritance.
(completion-metadata-get, completion--styles)
(completion--cycle-threshold): Use it.
(completion-category-defaults): Mention it in docstring.
Remove entry for 'project-buffer' category, and instead...
* lisp/progmodes/project.el: ...have 'project-buffer' inherit
from 'buffer'.
* test/lisp/minibuffer-tests.el
(completion-category-inheritance): New test.
* etc/NEWS: Announce support for category inheritance.
* etc/NEWS: Mention the change.
* lisp/minibuffer.el (completion-category-defaults):
Add an entry for it.
* lisp/progmodes/project.el (project--buffers-completion-table):
Return category 'project-buffer'.
* lisp/progmodes/project.el (project--buffers-completion-table):
New function, use it to implement the no-internal/internal
fallback logic from 'internal-complete-buffer', apply the
category and cycle-sort-function (bug#77312).
(project--read-project-buffer): Use it. Skip 'read-buffer' in
favor of 'completing-read'. But make sure to honor
read-buffer-completion-ignore-case and use format-prompt when
the function is available. Unify two execution paths.
* etc/NEWS: Update 'project-prune-zombie-projects' entry.
* lisp/progmodes/project.el (project-prune-zombie-projects):
Change default value (bug#77566).
(project--ensure-read-project-list, project--write-project-list)
(project-prompt-project-dir, project-prompt-project-name):
Rework for use 'project-prune-zombie-projects' value.
(project-forget-zombie-projects): Move code...
(project--delete-zombie-projects): ... to this new function.
* lisp/progmodes/project.el (project--remember-dir)
(project-remember-project): New STABLE argument.
* lisp/vc/vc.el (vc-add-working-tree)
(vc--prompt-other-working-tree, vc-move-working-tree): Use it.
* lisp/progmodes/project.el
(project-find-matching-buffer-function): New variable.
(project-find-matching-file): Delete.
(dired-current-directory): Declare.
(project-find-matching-file-or-directory): New function. Like
the old 'project-find-matching-file', but also handle Dired
buffers (bug#79126). When matching file/directory does not
exist, try going up in the directory tree until we find
something that does.
(project-find-matching-buffer): New command.
* lisp/vc/vc.el (vc-switch-working-tree): Use it (bug#79126).
* etc/NEWS: Announce new command and new variable.
* lisp/progmodes/project.el (project-shell, project-eshell):
When a numeric prefix is supplied, the command switches to or
creates a session buffer whose name has that number as a suffix.
For instance, C-2 yields "*name-of-project-shell<2>*". As
before, a plain universal argument C-u creates a new session
with an automatically generated numeric suffix. This change
makes the behavior of the project-shell commands consistent with
how M-x eshell handles numeric prefixes.
* etc/NEWS: Announce the change. (bug#76500)
* lisp/progmodes/project.el (project-prompter)
(project-prompt-project-dir, project-prompt-project-name): New
PREDICATE and REQUIRE-KNOWN optional arguments.
* lisp/vc/vc.el (project-prompter): Declare.
(vc--prompt-other-working-tree): New function.
(vc-switch-working-tree, vc-delete-working-tree)
(vc-move-working-tree): Use it to prompt for the other working
tree in a way that respects 'project-prompter' (bug#79024).
* etc/NEWS: Announce all three optional arguments. Rework
description of new optional argument to 'project-current'.
