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Clarify documentation of 'font-lock-maximum-decoration'

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* doc/emacs/display.texi (Font Lock): Explain how to make the
customization of 'font-lock-maximum-decoration' effective for an
existing buffer.  (Bug#23783)
This commit is contained in:
Eli Zaretskii 2016-06-18 12:50:57 +03:00
parent 2ad3d0182d
commit 65c96cc025
1 changed files with 9 additions and 3 deletions
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doc/emacs/display.texi
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@ -847,9 +847,15 @@ to alter the amount of fontification applied by Font Lock mode, for
major modes that support this feature. The value should be a number
(with 1 representing a minimal amount of fontification; some modes
support levels as high as 3); or @code{t}, meaning ``as high as
possible'' (the default). You can also specify different numbers for
particular major modes; for example, to use level 1 for C/C++ modes,
and the default level otherwise, use the value
possible'' (the default). To be effective for a given file buffer,
the customization of @code{font-lock-maximum-decoration} should be
done @emph{before} the file is visited; if you already have the file
visited in a buffer when you customize this variable, kill the buffer
and visit the file again after the customization.
You can also specify different numbers for particular major modes; for
example, to use level 1 for C/C++ modes, and the default level
otherwise, use the value
@example
'((c-mode . 1) (c++-mode . 1)))