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Use 'font-lock-extend-region-functions' in python-mode

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* lisp/progmodes/python.el (python-font-lock-extend-region): Change
arguments and return value for 'font-lock-extend-region-functions'.
(python-mode): Change from
'font-lock-extend-after-change-region-function' to
'font-lock-extend-region-functions'.  (Bug#63622)
This commit is contained in:
kobarity 2023-05-24 22:06:51 +09:00 • committed by Eli Zaretskii
parent b7b82ecb2b
commit aa5158630e
1 changed files with 19 additions and 15 deletions
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34
lisp/progmodes/python.el
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@ -869,18 +869,22 @@ decorators, exceptions, and assignments.")
Which one will be chosen depends on the value of
`font-lock-maximum-decoration'.")
(defun python-font-lock-extend-region (beg end _old-len)
"Extend font-lock region given by BEG and END to statement boundaries."
(save-excursion
(save-match-data
(goto-char beg)
(python-nav-beginning-of-statement)
(setq beg (point))
(goto-char end)
(python-nav-end-of-statement)
(setq end (point))
(cons beg end))))
(defvar font-lock-beg)
(defvar font-lock-end)
(defun python-font-lock-extend-region ()
"Extend font-lock region to statement boundaries."
(let ((beg font-lock-beg)
(end font-lock-end))
(goto-char beg)
(python-nav-beginning-of-statement)
(beginning-of-line)
(when (< (point) beg)
(setq font-lock-beg (point)))
(goto-char end)
(python-nav-end-of-statement)
(when (< end (point))
(setq font-lock-end (point)))
(or (/= beg font-lock-beg) (/= end font-lock-end))))
(defconst python-syntax-propertize-function
(syntax-propertize-rules
@ -6704,9 +6708,9 @@ implementations: `python-mode' and `python-ts-mode'."
`(,python-font-lock-keywords
nil nil nil nil
(font-lock-syntactic-face-function
. python-font-lock-syntactic-face-function)
(font-lock-extend-after-change-region-function
. python-font-lock-extend-region)))
. python-font-lock-syntactic-face-function)))
(add-hook 'font-lock-extend-region-functions
#'python-font-lock-extend-region nil t)
(setq-local syntax-propertize-function
python-syntax-propertize-function)
(setq-local imenu-create-index-function