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* set-text-properties and jit-lock-mode
@ 2016-02-21 18:02 Alan Schmitt
  2016-02-21 19:04 ` Alan Mackenzie
  2016-02-21 20:30 ` Eli Zaretskii
  0 siblings, 2 replies; 8+ messages in thread
From: Alan Schmitt @ 2016-02-21 18:02 UTC (permalink / raw)
  To: emacs-devel

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Hello,

I'm tracking down a bug in ledger-mode and I'm now at the point where I
think I need some help about some emacs core code.

The problem: if jit-lock-mode it t, then using set-text-properties to
change the face does not work.

To reproduce: start emacs with -Q. In the scratch buffer, type "foo".
Then evaluate:
(set-text-properties 192 195 (list 'face 'italic))

Nothing changes, and when I do a `describe-char' on one letter of "foo"
I don't see the face.

If I then evaluate
(setq jit-lock-mode nil)
(set-text-properties 192 195 (list 'face 'italic))

then I see the face change to italic, confirmed by `describe-char'.

As `set-text-properties' is a function in C, I don't know how to look at
its source (any pointers on how to do this would be great). Is it
supposed not to work for faces when jit-lock is on?

Thanks,

Alan

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OpenPGP Key ID : 040D0A3B4ED2E5C7
Monthly Athmospheric CO₂ (2016-01, Mauna Loa Obs.): 402.52

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^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2016-02-24  3:40 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-02-21 18:02 set-text-properties and jit-lock-mode Alan Schmitt
2016-02-21 19:04 ` Alan Mackenzie
2016-02-22  7:29   ` Alan Schmitt
2016-02-24  3:40   ` Stefan Monnier
2016-02-21 20:30 ` Eli Zaretskii
2016-02-22  7:38   ` Alan Schmitt
2016-02-22  8:51     ` Anders Lindgren
2016-02-22  9:02       ` Alan Schmitt

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