makelsr.py: refine a regexp and the message about unsafe snippets

diff --git a/buildscripts/makelsr.py b/buildscripts/makelsr.py
index 366653cfeb7831654da99c2623bf4900f87d4f78..6e3bf9aa4afbbf57ab9ed9736ebd97931e2be80f 100755 (executable)
--- a/buildscripts/makelsr.py
+++ b/buildscripts/makelsr.py
@@ -51,7 +51,7 @@ unconverted = []
 notags_files = []
 
 # mark the section that will be printed verbatim by lilypond-book
-end_header_re = re.compile ('(\\header {.*?"\\s*}\n)\n', re.M | re.S)
+end_header_re = re.compile ('(\\header {.+?(?:"\\s*|\\s+)}\n)\n', re.M | re.S)
 
 def mark_verbatim_section (ly_code):
        return end_header_re.sub ('\\1% begin verbatim\n', ly_code)
@@ -144,7 +144,8 @@ dump_file_list ('lsr-unsafe.txt', unsafe)
 sys.stderr.write ('''
 
 Unsafe files printed in lsr-unsafe.txt: CHECK MANUALLY!
-  xargs git-diff < lsr-unsafe.txt
+  git add input/lsr
+  xargs git-diff HEAD < lsr-unsafe.txt
 
 ''')