Merged revisions 74613,74615,74619-74620,74622 via svnmerge from
svn+ssh://svn.python.org/python/branches/py3k

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  r74613 | georg.brandl | 2009-09-01 09:34:27 +0200 (Di, 01 Sep 2009) | 1 line

  #6814: remove traces of xrange().
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  r74615 | georg.brandl | 2009-09-01 09:42:40 +0200 (Di, 01 Sep 2009) | 9 lines

  Recorded merge of revisions 74614 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r74614 | georg.brandl | 2009-09-01 09:40:54 +0200 (Di, 01 Sep 2009) | 1 line

    #6813: better documentation for numberless string formats.
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  r74619 | georg.brandl | 2009-09-01 10:02:03 +0200 (Di, 01 Sep 2009) | 1 line

  #6754: remove old struct member nb_inplace_divide.
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  r74620 | georg.brandl | 2009-09-01 10:03:26 +0200 (Di, 01 Sep 2009) | 1 line

  #6732: fix return value of module init function in example.
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  r74622 | georg.brandl | 2009-09-01 10:11:14 +0200 (Di, 01 Sep 2009) | 73 lines

  Merged revisions 74542,74544-74548,74550,74554-74555,74578,74588,74590,74603,74616-74618,74621 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r74542 | georg.brandl | 2009-08-23 23:28:56 +0200 (So, 23 Aug 2009) | 1 line

    Restore alphabetic order.
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    r74544 | georg.brandl | 2009-08-24 19:12:30 +0200 (Mo, 24 Aug 2009) | 1 line

    #6775: fix python.org URLs in README.
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    r74545 | georg.brandl | 2009-08-24 19:14:29 +0200 (Mo, 24 Aug 2009) | 1 line

    #6772: mention utf-8 as utf8 alias.
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    r74546 | georg.brandl | 2009-08-24 19:20:40 +0200 (Mo, 24 Aug 2009) | 1 line

    #6725: spell "namespace" consistently.
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    r74547 | georg.brandl | 2009-08-24 19:22:05 +0200 (Mo, 24 Aug 2009) | 1 line

    #6718: fix example.
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    r74548 | georg.brandl | 2009-08-24 19:24:27 +0200 (Mo, 24 Aug 2009) | 1 line

    #6677: mention "deleting" as an alias for removing files.
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    r74550 | georg.brandl | 2009-08-24 19:48:40 +0200 (Mo, 24 Aug 2009) | 1 line

    #6677: note that rmdir only removes empty directories.
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    r74554 | georg.brandl | 2009-08-27 20:59:02 +0200 (Do, 27 Aug 2009) | 1 line

    Typo fix.
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    r74555 | georg.brandl | 2009-08-27 21:02:43 +0200 (Do, 27 Aug 2009) | 1 line

    #6787: reference fix.
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    r74578 | tarek.ziade | 2009-08-29 15:33:21 +0200 (Sa, 29 Aug 2009) | 1 line

    fixed #6801: symmetric_difference_update also accepts pipe
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    r74588 | georg.brandl | 2009-08-30 10:35:01 +0200 (So, 30 Aug 2009) | 1 line

    #6803: fix old name.
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    r74590 | georg.brandl | 2009-08-30 13:51:53 +0200 (So, 30 Aug 2009) | 1 line

    #6801: fix copy-paste oversight.
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    r74603 | georg.brandl | 2009-08-31 08:38:29 +0200 (Mo, 31 Aug 2009) | 1 line

    other -> others where multiple arguments are accepted.
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    r74616 | georg.brandl | 2009-09-01 09:46:26 +0200 (Di, 01 Sep 2009) | 1 line

    #6808: clarification.
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    r74617 | georg.brandl | 2009-09-01 09:53:37 +0200 (Di, 01 Sep 2009) | 1 line

    #6765: hint that log(x, base) is not very sophisticated.
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    r74618 | georg.brandl | 2009-09-01 10:00:47 +0200 (Di, 01 Sep 2009) | 1 line

    #6810: add a link to the section about frame objects instead of just a description where to find it.
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    r74621 | georg.brandl | 2009-09-01 10:06:03 +0200 (Di, 01 Sep 2009) | 1 line

    #6638: fix wrong parameter name and markup a class.
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diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 95d27f1..6cb6cb6 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -194,7 +194,7 @@
 The grammar for a replacement field is as follows:
 
    .. productionlist:: sf
-      replacement_field: "{" `field_name` ["!" `conversion`] [":" `format_spec`] "}"
+      replacement_field: "{" [`field_name`] ["!" `conversion`] [":" `format_spec`] "}"
       field_name: arg_name ("." `attribute_name` | "[" `element_index` "]")*
       arg_name: (`identifier` | `integer`)?
       attribute_name: `identifier`
@@ -202,7 +202,7 @@
       conversion: "r" | "s" | "a"
       format_spec: <described in the next section>
 
-In less formal terms, the replacement field starts with a *field_name* that specifies
+In less formal terms, the replacement field can start with a *field_name* that specifies
 the object whose value is to be formatted and inserted
 into the output instead of the replacement field.
 The *field_name* is optionally followed by a  *conversion* field, which is
@@ -223,7 +223,7 @@
 
    "First, thou shalt count to {0}" # References first positional argument
    "Bring me a {}"                  # Implicitly references the first positional argument
-   "From {} to {}"                  # Same as "From {0] to {1}"
+   "From {} to {}"                  # Same as "From {0} to {1}"
    "My quest is {name}"             # References keyword argument 'name'
    "Weight in tons {0.weight}"      # 'weight' attribute of first positional arg
    "Units destroyed: {players[0]}"  # First element of keyword argument 'players'.
@@ -243,6 +243,7 @@
 
    "Harold's a clever {0!s}"        # Calls str() on the argument first
    "Bring out the holy {name!r}"    # Calls repr() on the argument first
+   "More {!a}"                      # Calls ascii() on the argument first
 
 The *format_spec* field contains a specification of how the value should be
 presented, including such details as field width, alignment, padding, decimal