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Diffstat (limited to 'doc/lispref/display.texi')
| -rw-r--r-- | doc/lispref/display.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi index 86f490677d1..d2e075c54ec 100644 --- a/doc/lispref/display.texi +++ b/doc/lispref/display.texi @@ -3480,6 +3480,12 @@ function finishes are the ones that really matter. For efficiency, we recommend writing these functions so that they usually assign faces to around 400 to 600 characters at each call. + +When the buffer text includes very long lines, these functions are +called with the buffer narrowed to a relatively small region around +@var{pos}, and with narrowing locked, so the functions cannot use +@code{widen} to gain access to the rest of the buffer. +@xref{Narrowing}. @end defvar @node Basic Faces |