Merged revisions 80521 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r80521 | r.david.murray | 2010-04-26 22:45:53 -0400 (Mon, 26 Apr 2010) | 13 lines

  Merged revisions 80512 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r80512 | r.david.murray | 2010-04-26 17:17:14 -0400 (Mon, 26 Apr 2010) | 7 lines

    Issue #6656: fix locale.format_string to handle escaped percents and mappings.

    Refactors format_string.  Includes tests for the two problems noted in
    the issue, but as far as I can see there are no other tests that confirm
    that format_string conforms to normal % formatting rules.
  ........
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1 files changed, 22 insertions, 14 deletions

diff --git a/Lib/locale.py b/Lib/locale.py
index f74207d..8c44625 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -224,22 +224,30 @@ def format_string(f, val, grouping=False):
     percents = list(_percent_re.finditer(f))
     new_f = _percent_re.sub('%s', f)
 
-    if isinstance(val, tuple):
-        new_val = list(val)
-        i = 0
-        for perc in percents:
-            starcount = perc.group('modifiers').count('*')
-            new_val[i] = format(perc.group(), new_val[i], grouping, False, *new_val[i+1:i+1+starcount])
-            del new_val[i+1:i+1+starcount]
-            i += (1 + starcount)
-        val = tuple(new_val)
-    elif isinstance(val, collections.Mapping):
+    if isinstance(val, collections.Mapping):
+        new_val = []
         for perc in percents:
-            key = perc.group("key")
-            val[key] = format(perc.group(), val[key], grouping)
+            if perc.group()[-1]=='%':
+                new_val.append('%')
+            else:
+                new_val.append(format(perc.group(), val, grouping))
     else:
-        # val is a single value
-        val = format(percents[0].group(), val, grouping)
+        if not isinstance(val, tuple):
+            val = (val,)
+        new_val = []
+        i = 0
+        for perc in percents:
+            if perc.group()[-1]=='%':
+                new_val.append('%')
+            else:
+                starcount = perc.group('modifiers').count('*')
+                new_val.append(_format(perc.group(),
+                                      val[i],
+                                      grouping,
+                                      False,
+                                      *val[i+1:i+1+starcount]))
+                i += (1 + starcount)
+    val = tuple(new_val)
 
     return new_f % val