Consider pdf as optional file.

diff --git a/scripts/lilypond-book.py b/scripts/lilypond-book.py
index 4864d36e6c30f0b41cd65e93d5a786b04b12346e..b6a8fe236c5cec73f98f1adf642ecaabd1c8d3e3 100644 (file)
--- a/scripts/lilypond-book.py
+++ b/scripts/lilypond-book.py
@@ -1173,8 +1173,7 @@ class LilypondSnippet (Snippet):
             for number in range(1, system_count + 1):
                 systemfile = '%s-%d' % (base, number)
                 require_file (systemfile + '.eps')
-                if 'pdf' in self.format:
-                    require_file (systemfile + '.pdf')
+                consider_file (systemfile + '.pdf')
         except Missing:
             return None