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Fix recently introduced Python font lock breakage of chained assignments

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* lisp/progmodes/python.el (python-font-lock-assignment-matcher):
Fix fontification of chained assignments (bug#54992).
This commit is contained in:
kobarity 2022-05-21 15:23:21 +02:00 • committed by Lars Ingebrigtsen
parent 22ae842b34
commit a8acb9516e
2 changed files with 13 additions and 3 deletions
lisp/progmodes
python.el

9
lisp/progmodes/python.el
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@ -606,12 +606,15 @@ builtins.")
Search for next occurrence if REGEXP matched within a `paren'
context (to avoid, e.g., default values for arguments or passing
arguments by name being treated as assignments) or is followed by
an '=' sign (to avoid '==' being treated as an assignment."
an '=' sign (to avoid '==' being treated as an assignment. Set
point to the position one character before the end of the
occurrence found so that subsequent searches can detect the '='
sign in chained assignment."
(lambda (limit)
(cl-loop while (re-search-forward regexp limit t)
unless (or (python-syntax-context 'paren)
(equal (char-after) ?=))
return t)))
return (progn (backward-char) t))))
(defvar python-font-lock-keywords-maximum-decoration
`((python--font-lock-f-strings)
@ -706,7 +709,7 @@ an '=' sign (to avoid '==' being treated as an assignment."
;; [a] = 5
;; [*a] = 5, 6
(,(python-font-lock-assignment-matcher
(python-rx (or line-start ?\;) (* space)
(python-rx (or line-start ?\; ?=) (* space)
(or "[" "(") (* space)
grouped-assignment-target (* space)
(or ")" "]") (* space)