Merge pull request #1538 from xonsh/fix_color_indexes

Fix color indexes on Windows

news/fix_get_color_index.rst

@@ -0,0 +1,14 @@
+**Added:** None
+
+**Changed:** None
+
+**Deprecated:** None
+
+**Removed:** None
+
+**Fixed:** 
+
+* Fix a startup problem on windows caused by a refactor of Prompt_toolkit. 
+  https://github.com/jonathanslenders/python-prompt-toolkit/commit/a9df2a2
+
+**Security:** None

xonsh/tools.py

@@ -1271,7 +1271,10 @@ def _get_color_indexes(style_map):
     for token in style_map:
         attr = pt_style.token_to_attrs[token]
         if attr.color is not None:
-            index = table.lookup_color(attr.color, attr.bgcolor)
+            try:
+                index = table.lookup_color(attr.color, attr.bgcolor)
+            except AttributeError:
+                index = table.lookup_fg_color(attr.color)
             try:
                 rgb = (int(attr.color[0:2], 16),
                        int(attr.color[2:4], 16),