[nongnu] elpa/rust-mode beec95a 231/486: Allow disabling rustfmt with a dir-local/file-local variable

[ELPA Syncer]

branch: elpa/rust-mode
commit beec95a510a239f3ac6670bcd4ad4345a5495ae1
Author: Steven Allen <steven@stebalien.com>
Commit: Steven Allen <steven@stebalien.com>

    Allow disabling rustfmt with a dir-local/file-local variable
---
 rust-mode.el | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/rust-mode.el b/rust-mode.el
index 56657d6..13b8c3b 100644
--- a/rust-mode.el
+++ b/rust-mode.el
@@ -1258,12 +1258,12 @@ This is written mainly to be used as 
`end-of-defun-function' for Rust."
 (defun rust-enable-format-on-save ()
   "Enable formatting using rustfmt when saving buffer."
   (interactive)
-  (add-hook 'before-save-hook #'rust-format-buffer nil t))
+  (setq-local rust-format-on-save t))
 
 (defun rust-disable-format-on-save ()
   "Disable formatting using rustfmt when saving buffer."
   (interactive)
-  (remove-hook 'before-save-hook #'rust-format-buffer t))
+  (setq-local rust-format-on-save nil))
 
 ;; For compatibility with Emacs < 24, derive conditionally
 (defalias 'rust-parent-mode
@@ -1317,9 +1317,7 @@ This is written mainly to be used as 
`end-of-defun-function' for Rust."
   (setq-local parse-sexp-lookup-properties t)
   (setq-local electric-pair-inhibit-predicate 
'rust-electric-pair-inhibit-predicate-wrap)
   (add-hook 'after-revert-hook 'rust--after-revert-hook 'LOCAL)
-
-  (when rust-format-on-save
-    (rust-enable-format-on-save)))
+  (add-hook 'before-save-hook 'rust--before-save-hook nil t))
 
 ;;;###autoload
 (add-to-list 'auto-mode-alist '("\\.rs\\'" . rust-mode))
@@ -1341,6 +1339,9 @@ This is written mainly to be used as 
`end-of-defun-function' for Rust."
     (funcall font-lock-ensure-fn))
   )
 
+(defun rust--before-save-hook ()
+  (when rust-format-on-save (rust-format-buffer)))
+
 ;; Issue #6887: Rather than inheriting the 'gnu compilation error
 ;; regexp (which is broken on a few edge cases), add our own 'rust
 ;; compilation error regexp and use it instead.