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Diffstat (limited to 'lispref/display.texi')
| -rw-r--r-- | lispref/display.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lispref/display.texi b/lispref/display.texi index 03b8188588f..4fa586136c7 100644 --- a/lispref/display.texi +++ b/lispref/display.texi @@ -2703,6 +2703,10 @@ This removes only images that were put into @var{buffer} the way display them again more efficiently. It removes an image from the cache when it hasn't been displayed for a specified period of time. +When an image is looked up in the cache, its specification is compared +with cached image specifications using @code{equal}. This means that +all images with equal specifications share the same image in the cache. + @defvar image-cache-eviction-delay @tindex image-cache-eviction-delay This variable specifies the number of seconds an image can remain in the |