Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / python / book_latex.py

diff --git a/python/book_latex.py b/python/book_latex.py
index a47c950e248152e2f01158880e58d52cab835265..ec5412b1d8192bee41e292e31bc62a78798cc45d 100644 (file)
--- a/python/book_latex.py
+++ b/python/book_latex.py
@@ -189,11 +189,12 @@ def get_latex_textwidth (source, global_options):
 
     progress (_ ("Running `%s' on file `%s' to detect default page settings.\n")
               % (global_options.latex_program, tmpfile))
-    cmd = 'TEXINPUTS="%s:$TEXINPUTS" %s %s' \
-        % (global_options.input_dir, global_options.latex_program, tmpfile)
+    cmd = '%s %s' % (global_options.latex_program, tmpfile)
     debug ("Executing: %s\n" % cmd)
     run_env = os.environ.copy()
     run_env['LC_ALL'] = 'C'
+    run_env['TEXINPUTS'] = '%s:%s' % \
+                           (global_options.input_dir, run_env.get('TEXINPUTS',""))
 
     ### unknown why this is necessary
     universal_newlines = True
@@ -206,7 +207,13 @@ def get_latex_textwidth (source, global_options):
         output_filename = os.path.join(output_dir, 'output.txt')
         # call command
         cmd += " > %s" % output_filename
+        oldtexinputs = os.environ.get ('TEXINPUTS')
+        os.environ['TEXINPUTS'] = run_env['TEXINPUTS']
         returncode = os.system(cmd)
+        if oldtexinputs:
+            os.environ['TEXINPUTS'] = oldtexinputs
+        else:
+            del os.environ['TEXINPUTS']
         parameter_string = open(output_filename).read()
         if returncode != 0:
             warning (_ ("Unable to auto-detect default settings:\n"))