fixed -dbackend to only respond to known backends

jdh2358 · jdh2358 · commit a7b574c32e6e · 2004-11-04T15:09:07.000Z
svn path=/trunk/matplotlib/; revision=661
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,6 +1,9 @@
 New entries should be added at the top
 
 ==============================================================
+2004-11-04 Changed -dbackend processing to only use known backends, so
+           we don't clobber other non-matplotlib uses of -d, like -debug.
+
 2004-11-04 backend_agg.py: added IMAGE_FORMAT to list the formats that the 
            backend can save to.
            backend_gtkagg.py: added support for saving JPG files by using the
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -756,15 +756,22 @@ def rcdefaults():
 # Allow command line access to the backend with -d (matlab compatible
 # flag)
 
+_knownBackends = {
+    'PS':1, 'GTK':1, 'Template':1, 'GD':1,
+    'WX':1, 'Paint':1, 'Agg':1, 'GTKAgg':1, 'SVG':1,
+    'TkAgg':1, 'WXAgg':1, 'FltkAgg':1, 'Cairo':1, 'GTKCairo':1,}
+
 if hasattr(sys,'argv'):         # mod_python doesn't have argv attr
+    known = _knownBackends.keys()
     for s in sys.argv[1:]:
         if s.startswith('-d'):  # look for a -d flag
-            rcParams['backend'] = s[2:].strip()
-            break
+            name = s[2:].strip()
+            # we don't want to assume all -d flags are backends, eg -debug
+            if name in  known:
+                rcParams['backend'] = name            
+                break
+            
 
-_knownBackends = {'PS':1, 'GTK':1, 'Template':1, 'GD':1,
-                  'WX':1, 'Paint':1, 'Agg':1, 'GTKAgg':1, 'SVG':1,
-                  'TkAgg':1, 'WXAgg':1, 'FltkAgg':1, 'Cairo':1, 'GTKCairo':1,}
 
 def use(arg):
     """
