[lilypond-book] Make latex mode run in case of warnings.

diff --git a/python/book_latex.py b/python/book_latex.py
index dfb6fc0ac741617c530ef69701a43a1eaa2790c9..1faa57639bda653ec807c9844232b672c9bd762a 100644 (file)
--- a/python/book_latex.py
+++ b/python/book_latex.py
@@ -6,6 +6,11 @@ import os
 import book_base as BookBase
 from book_snippets import *
 import lilylib as ly
+global _;_=ly._
+
+progress = ly.progress
+warning = ly.warning
+error = ly.error
 
 # Recognize special sequences in the input.
 #