* lisp/progmodes/project.el (project-known-project-roots):
Rename from 'project-known-roots'. Update the docstring. Make
sure the returned value is a list of strings. Update the caller
(bug#41821).
* lisp/progmodes/project.el (project-kill-buffers-ignores):
Rename from project-kill-buffers-skip-conditions (bug#41868).
Update both references.
Add a :package-version attribute.
* lisp/progmodes/project.el (project-known-roots): New autoloaded function.
* lisp/vc/vc-hooks.el (vc-known-roots): New function.
* lisp/vc/vc.el (vc-root-diff, vc-print-root-log):
* lisp/vc/vc-dir.el (vc-dir): Use 'vc-known-roots' for default
values for read-directory-name.
* lisp/progmodes/project.el (project-shell): Improve docstring to
include information about an implementation detail.
* list/progmodes/project.el (project-eshell): Modelled after
'project-shell', change default behavior such that we don't create too
many eshell buffers by default. Use universal argument to create
subsequent buffers.
* lisp/progmodes/project.el (project-shell):
Pop to an existing shell buffer by default.
If there's none, or if universal argument is used, open a subsequent
shell buffer and jump to it. Prefix shell buffer name with the base
name of project root directory. (Bug#41858)
* lisp/progmodes/project.el
(project-switch-to-buffer): Pass the "other buffer" as DEF to
read-buffer if it belongs to the current project (bug#41879).
* lisp/progmodes/project.el
(project-kill-buffers-skip-conditions): New variable.
(project--buffer-list): New function.
(project-kill-buffers): New command (bug#41868).
Save the project list file as lisp data instead of line separated
strings to make it more extendable in the future.
* lisp/progmodes/project.el (project--read-project-list)
(project--write-project-list, project--add-to-project-list-front)
(project--remove-from-project-list): Adjust to `project--list' now
being an alist.
* lisp/progmodes/project.el (project-switch-commands): Use
characters for keys instead of string for better future
compatibility with 'read-multiple-choice'.
(project-switch-project): Adjust to above change.
* lisp/progmodes/project.el (project): New custom group.
(project-vc): Use it as parent.
(project-vc-merge-submodules): Tag with Emacs version.
(project-read-file-name-function): Assign to the 'project' group.
(project-list-file): New user option (bug#41600).
(project--write-project-list, project--read-project-list): Use it.
* lisp/progmodes/project.el (project--ensure-file-exists): Remove.
(project--read-project-list): Set 'project--list' to nil when the
project list file doesn't exist.
(project-compile): Add args and interactive spec like in 'compile'.
(project-switch-commands): Bind project-vc-dir to "v",
project-shell to "s", and rebind project-find-regexp from "s" to "r".
* doc/emacs/maintaining.texi (Project File Commands):
Describe project-vc-dir and project-shell.
* lisp/progmodes/project.el (project--read-project-list): Simplify the
previous commit by utilizing the optional OMIT-NULLS argument to
'split-string'.
* lisp/progmodes/project.el (project-dired, project-eshell)
(project--read-project-list, project--write-project-list)
(project--add-to-project-list-front)
(project--remove-from-project-list): Adapt to the new 'project-root'.
* lisp/progmodes/project.el (project-switch-commands): Rename from
'project-switch-menu'.
(project--keymap-prompt, project-switch-project): Update after the
renaming.
* lisp/progmodes/project.el: Require seq.
(project--switch-alist): Remove in favor of the public
'project-switch-menu'.
(project-add-switch-command): Remove; not needed now that
'project-switch-menu' is a public alist.
(project-switch-menu): New variable mapping keys to project switching
menu entries.
(project--keymap-prompt, project-switch-project): Adjust to the new
'project-switch-menu' format.
* lisp/progmodes/project.el:
(project-find-regexp): Add to the list of 'switch' commands.
(project-switch-project): Use call-interactively so that the
former can read its arguments.
