[Python-checkins] cpython (merge 3.4 -> 3.5): Issue #25034: Merge from 3.4.

[eric.smith]

https://hg.python.org/cpython/rev/65d7b4fd0332
changeset:   98394:65d7b4fd0332
branch:      3.5
parent:      98390:a4bf231d81d3
parent:      98393:9eae18e8af66
user:        Eric V. Smith <eric at trueblade.com>
date:        Tue Sep 29 10:30:04 2015 -0400
summary:
  Issue #25034: Merge from 3.4.

files:
  Lib/string.py           |  11 ++++++-----
  Lib/test/test_string.py |   2 ++
  Misc/ACKS               |   1 +
  Misc/NEWS               |   3 +++
  4 files changed, 12 insertions(+), 5 deletions(-)


diff --git a/Lib/string.py b/Lib/string.py
--- a/Lib/string.py
+++ b/Lib/string.py
@@ -188,7 +188,7 @@
 
     def vformat(self, format_string, args, kwargs):
         used_args = set()
-        result = self._vformat(format_string, args, kwargs, used_args, 2)
+        result, _ = self._vformat(format_string, args, kwargs, used_args, 2)
         self.check_unused_args(used_args, args, kwargs)
         return result
 
@@ -235,14 +235,15 @@
                 obj = self.convert_field(obj, conversion)
 
                 # expand the format spec, if needed
-                format_spec = self._vformat(format_spec, args, kwargs,
-                                            used_args, recursion_depth-1,
-                                            auto_arg_index=auto_arg_index)
+                format_spec, auto_arg_index = self._vformat(
+                    format_spec, args, kwargs,
+                    used_args, recursion_depth-1,
+                    auto_arg_index=auto_arg_index)
 
                 # format the object and append to the result
                 result.append(self.format_field(obj, format_spec))
 
-        return ''.join(result)
+        return ''.join(result), auto_arg_index
 
 
     def get_value(self, key, args, kwargs):
diff --git a/Lib/test/test_string.py b/Lib/test/test_string.py
--- a/Lib/test/test_string.py
+++ b/Lib/test/test_string.py
@@ -58,6 +58,8 @@
                          'foo{1}{num}{1}'.format(None, 'bar', num=6))
         self.assertEqual(fmt.format('{:^{}}', 'bar', 6),
                          '{:^{}}'.format('bar', 6))
+        self.assertEqual(fmt.format('{:^{}} {}', 'bar', 6, 'X'),
+                         '{:^{}} {}'.format('bar', 6, 'X'))
         self.assertEqual(fmt.format('{:^{pad}}{}', 'foo', 'bar', pad=6),
                          '{:^{pad}}{}'.format('foo', 'bar', pad=6))
 
diff --git a/Misc/ACKS b/Misc/ACKS
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1012,6 +1012,7 @@
 Trent Nelson
 Chad Netzer
 Max Neunhöffer
+Anthon van der Neut
 George Neville-Neil
 Hieu Nguyen
 Johannes Nicolai
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -21,6 +21,9 @@
 Library
 -------
 
+- Issue #25034: Fix string.Formatter problem with auto-numbering and
+  nested format_specs. Patch by Anthon van der Neut.
+
 - Issue #25233: Rewrite the guts of asyncio.Queue to be more understandable and correct.
 
 - Issue #25203: Failed readline.set_completer_delims() no longer left the

-- 
Repository URL: https://hg.python.org/cpython