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project-compile: Don't let-bind compile-command

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* 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.
This commit is contained in:
Sean Whitton 2025-11-30 17:36:33 +00:00
parent 27f0a3fd86
commit 16b19ceb28
1 changed files with 20 additions and 12 deletions
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26
lisp/progmodes/project.el
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@ -1639,18 +1639,26 @@ If non-nil, it overrides `compilation-buffer-name-function' for
"Run `compile' in the project root."
(declare (interactive-only compile))
(interactive)
(let ((default-directory (project-root (project-current t)))
(let* ((default-directory (project-root (project-current t)))
(compilation-buffer-name-function
(or project-compilation-buffer-name-function
compilation-buffer-name-function))
;; Specifically ignore the value of `compile-command' if we were
;; invoked from a `vc-compilation-mode' buffer because for
;; `project-compile' we know the user wants to build the
;; project, not re-run a VC pull or push operation (bug#79658).
(compile-command (if (derived-mode-p 'vc-compilation-mode)
(with-temp-buffer compile-command)
compile-command)))
(call-interactively #'compile)))
(orig-current-buffer (and (derived-mode-p 'vc-compilation-mode)
(local-variable-p 'compile-command)
(current-buffer)))
(orig-compile-command (and orig-current-buffer compile-command)))
;; If invoked from a `vc-compilation-mode' buffer, we want to ignore
;; `compile-command' because for this command we know the user wants
;; to build the project, not re-run a VC pull or push (bug#79658).
;; Do this without let-binding `compile-command', however, in order
;; that the user's command to build the project is not immediately
;; thrown away. Essentially we want to turn the `setq' of
;; `compile-command' done by `compile' into a `setq-default'.
(when orig-current-buffer
(kill-local-variable 'compile-command))
(unwind-protect (call-interactively #'compile)
(with-current-buffer orig-current-buffer
(setq-local compile-command orig-compile-command)))))
;;;###autoload
(defun project-recompile (&optional edit-command)