(defun python-shell-multiline--apply-font-lock (limit)(if-let ((process (get-buffer-process (current-buffer)))(pmark (process-mark)))(if (> limit pmark)(let ((font-lock-keywords python-shell-multiline-font-lock-keywords)(font-lock-syntactic-face-function#'python-font-lock-syntactic-face-function)(start (max pmark (point))))(with-syntax-table python-mode-syntax-table(font-lock-flush start limit)(font-lock-ensure start limit))))))(setq-local font-lock-keywords '(python-shell-multiline--apply-font-lock)font-lock-keywords-only nilsyntax-propertize-function python-syntax-propertize-function)(setq python-shell-multiline-font-lock-keywords(symbol-value(font-lock-choose-keywords python-font-lock-keywords(font-lock-value-in-major-modefont-lock-maximum-decoration))))
On Apr 11, 2021, at 5:10 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:Python-font-lock-keywords is a variable defined in ‘python.el’.
Its value is
(python-font-lock-keywords-level-1 python-font-lock-keywords-level-1 python-font-lock-keywords-level-2 python-font-lock-keywords-maximum-decoration)
Not sure why jit-lock-function would be evaluating it like an sexp.
`python-font-lock-keywords` does not hold a valid value for use on
`font-lock-keywords` but a value to be used as the first element of
`font-lock-defaults`. This "first element" is used to initialize
`font-lock-keywords` but it depends on things like the
`font-lock-maximum-decoration`.
StefanOn Apr 11, 2021, at 12:31 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:But then, why bother round-tripping text out to a special-use buffer anyway,
vs. just letting font-lock operate in-situ in the shell buffer itself using
python-mode’s fairly simple font-lock-defaults. The only thing needed to
make this work is asking font-lock to ignore all the text with ‘field of
‘output?
Maybe you can try something like the following?
(defvar python--font-lock-keywords ...)
(defvar python-font-lock-keywords
'(python--apply-font-lock))
(defun python--apply-font-lock (limit)
(while (< (point) limit)
(let ((next-boundary (find-next-boundary limit)))
(if (we-should-skip-this-block)
(goto-char next-boundary)
(let ((font-lock-keywords python--font-lock-keywords))
(font-lock-ensure (point) limit))))))
-- Stefan