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authorBill Wohler <wohler@newt.com>2006-03-14 19:35:08 +0000
committerBill Wohler <wohler@newt.com>2006-03-14 19:35:08 +0000
commit70949f309abf3fd2f7c27a253d3ee5d1bf30d83b (patch)
tree0942ab6fb9f1ada300ef7904ef0fc15c79170987 /lispref
parent44e3f44013ee5d526d2666e2ec8ed4962f9a6c77 (diff)
downloademacs-70949f309abf3fd2f7c27a253d3ee5d1bf30d83b.tar.gz
(Defining Images): In image-load-path-for-library, always return list
of directories. Update example.
Diffstat (limited to 'lispref')
-rw-r--r--lispref/ChangeLog5
-rw-r--r--lispref/display.texi19
2 files changed, 14 insertions, 10 deletions
diff --git a/lispref/ChangeLog b/lispref/ChangeLog
index 5b5a316c95e..9d07a2d59c8 100644
--- a/lispref/ChangeLog
+++ b/lispref/ChangeLog
@@ -1,3 +1,8 @@
+2006-03-14 Bill Wohler <wohler@newt.com>
+
+ * display.texi (Defining Images): In image-load-path-for-library,
+ always return list of directories. Update example.
+
2006-03-14 Alan Mackenzie <acm@muc.de>
* modes.texi: New node, "Region to Fontify" (for Font Lock).
diff --git a/lispref/display.texi b/lispref/display.texi
index dcf54f60d1d..294a6d64e7e 100644
--- a/lispref/display.texi
+++ b/lispref/display.texi
@@ -4138,22 +4138,21 @@ First it searches for @var{image} in a path suitable for
Then this function returns a list of directories which contains first
the directory in which @var{image} was found, followed by the value of
@code{load-path}. If @var{path} is given, it is used instead of
-@code{load-path}. If @var{path} is @code{t}, then the function just
-returns the directory that contains @var{image}.
-@c ??? Meaningm it does not return a list?
+@code{load-path}.
-If @var{no-error} is non-@code{nil}, this function returns @code{nil}
-if a suitable path can't be found, rather than signaling an error.
+If @var{no-error} is non-@code{nil} and a suitable path can't be
+found, don't signal an error. Instead, return a list of directories as
+before, except that @code{nil} appears in place of the image directory.
Here is an example that uses a common idiom to provide compatibility
with versions of Emacs that lack the variable @code{image-load-path}:
@example
-(let ((load-path
- (image-load-path-for-library "mh-e" "mh-logo.xpm"))
- (image-load-path
- (image-load-path-for-library "mh-e" "mh-logo.xpm"
- 'image-load-path)))
+;; Avoid errors on Emacsen without `image-load-path'.
+(if (not (boundp 'image-load-path)) (defvar image-load-path nil))
+
+(let* ((load-path (image-load-path-for-library "mh-e" "mh-logo.xpm"))
+ (image-load-path (cons (car load-path) image-load-path)))
(mh-tool-bar-folder-buttons-init))
@end example
@end defun