X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=lib%2Fscripts%2Ftex_copy.py;h=224406840c34c0d0a2e3194fe32f7480247604c9;hb=dce6c8875c71c43610971408da5d59018fb9dc38;hp=c91e298cabd69d6bc0707dcd929271e12facc3d6;hpb=37dc5aeabe851b30f9c2d0f2952992515e572e36;p=lyx.git

diff --git a/lib/scripts/tex_copy.py b/lib/scripts/tex_copy.py
index c91e298cab..224406840c 100644
--- a/lib/scripts/tex_copy.py
+++ b/lib/scripts/tex_copy.py
@@ -11,7 +11,7 @@
 # Full author contact details are available in file CREDITS
 
 # Usage:
-# tex_copy.py from file> <to file> <latex name>
+# tex_copy.py <from file> <to file> <latex name>
 
 # This script will copy a file <from file> to <to file>.
 # <to file> is no exact copy of <from file>, but any occurence of <basename>
@@ -54,6 +54,8 @@ def main(argv):
     latex_base, latex_ext = os.path.splitext(latex_file)
 
     # Read the input file and write the output file
+    if(not os.path.isfile(abs_from_file)):
+         error("%s is not a valid file.\n" % abs_from_file)
     from_file = open(abs_from_file, 'rb')
     to_file = open(abs_to_file, 'wb')
     lines = from_file.readlines()