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[bug #28115] printf breakage: variable precision: %.*s conversion.


From: Kaz Kylheku
Subject: [bug #28115] printf breakage: variable precision: %.*s conversion.
Date: Sat, 28 Nov 2009 11:30:23 +0000
User-agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618)

URL:
  <http://savannah.gnu.org/bugs/?28115>

                 Summary: printf breakage: variable precision: %.*s
conversion.
                 Project: GNU Core Utilities
            Submitted by: kkylheku
            Submitted on: Sat 28 Nov 2009 03:30:20 AM PST
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Using a coreutils 7.3, I discovered printf breakage:

The following should print 21 dashes.

printf '%.*s\n' 21 -------------------------------------------

It works if the * precision is literally replaced by 21, as in:

printf '%.21s\n' -------------------------------------------

Oops!





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