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; Minor copyedits of documentation related to long-line handling

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* src/xdisp.c (syms_of_xdisp) <fontification-functions>:
* etc/NEWS: Fix documentation related to long lines.  (Bug#56682)
This commit is contained in:
Eli Zaretskii 2022-07-29 13:20:38 +03:00
parent 02b180e955
commit 01ca1c70ae
2 changed files with 14 additions and 14 deletions
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20
etc/NEWS
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@ -355,19 +355,19 @@ option) and can be set to nil to disable Just-in-time Lock mode.
* Changes in Emacs 29.1
---
** Emacs is now capable of editing files with arbitrarily long lines.
The display of long lines has been optimized, and Emacs no longer
chokes when a buffer on display contains long lines. The variable
'long-line-threshold' controls whether and when these display
** Emacs is now capable of editing files with very long lines.
The display of long lines has been optimized, and Emacs should no
longer choke when a buffer on display contains long lines. The
variable 'long-line-threshold' controls whether and when these display
optimizations are in effect.
If you still experience slowdowns while editing files with long lines,
this is due to line truncation, or to one of the enabled minor modes,
or to the current major mode. Try turning off line truncation with
'C-x x t', or try disabling all known slow minor modes with 'M-x
so-long-minor-mode', or try disabling all known slow minor modes and
the major mode with 'M-x so-long-mode', or visit the file with 'M-x
find-file-literally' instead of the usual 'C-x C-f'.
this may be due to line truncation, or to one of the enabled minor
modes, or to the current major mode. Try turning off line truncation
with 'C-x x t', or try disabling all known slow minor modes with
'M-x so-long-minor-mode', or try disabling both known slow minor modes
and the major mode with 'M-x so-long-mode', or visit the file with
'M-x find-file-literally' instead of the usual 'C-x C-f'.
Note that the display optimizations in these cases may cause the
buffer to be occasionally mis-fontified.

8
src/xdisp.c
View file

@ -36660,10 +36660,10 @@ fontify a region starting at POS in the current buffer, and give
fontified regions the property `fontified' with a non-nil value.
Note that, when the buffer contains one or more lines whose length is
above `long-line-threshold', these functions only have access to a
small portion of the buffer around POS, and cannot use `widen' to gain
access to other portions of buffer text because the narrowing of the
buffer is locked (see `narrow-to-region'). */);
above `long-line-threshold', these functions are called with the buffer
narrowed to a small portion around POS, and the narrowing is locked (see
`narrow-to-region'), so that these functions cannot use `widen' to gain
access to other portions of buffer text. */);
Vfontification_functions = Qnil;
Fmake_variable_buffer_local (Qfontification_functions);