Commit 9a613d3e authored by Wenjamin Petrenko's avatar Wenjamin Petrenko Committed by Noam Postavsky

Prevent `modify-file-local-variable-prop-line' from adding extra ';'

* lisp/files-x.el (modify-file-local-variable-prop-line): Handle
whitespace when checking if there's already a ';' before the
variable (Bug#23294).

Copyright-paperwork-exempt: yes
parent 624e7dc7
......@@ -377,7 +377,9 @@ from the -*- line ignoring the input argument VALUE."
((eq variable 'mode) (goto-char beg))
((null replaced-pos) (goto-char end))
(replaced-pos (goto-char replaced-pos)))
(if (and (not (eq (char-before) ?\;))
(if (and (save-excursion
(skip-chars-backward " \t")
(not (eq (char-before) ?\;)))
(not (equal (point) (marker-position beg)))
;; When existing `-*- -*-' is empty, beg > end.
(not (> (marker-position beg) (marker-position end))))
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