improve preview mode comments

[ikiwiki.git] / IkiWiki / Plugin / sparkline.pm

diff --git a/IkiWiki/Plugin/sparkline.pm b/IkiWiki/Plugin/sparkline.pm
index 42665ac63699efe2752dd177fdf1f998068aa418..1b1d04cba6e7c2e2510a51758a9cfd5439eb4ce5 100644 (file)
--- a/IkiWiki/Plugin/sparkline.pm
+++ b/IkiWiki/Plugin/sparkline.pm
@@ -158,7 +158,8 @@ sub preprocess (@) {
                        writefile($fn, $config{destdir}, $png, 1);
                }
                else {
-                       # can't write the file, so embed it in a data uri
+                       # in preview mode, embed the image in a data uri
+                       # to avoid temp file clutter
                        eval q{use MIME::Base64};
                        error($@) if $@;
                        return "<img src=\"data:image/png;base64,".