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From: "Felix E. Klee" <felix.klee@inka.de>
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Subject: Reformatting Chat Protocol?
Date: Sun, 14 Nov 2010 06:42:03 -0800 (PST)
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In a text file, I want to reformat a block as follows. Its a chat
protocol with various lines longer than the value of `fill-column'.

From:

  [11.11.2010 17:01:37] bla bla bla bla bla bla bla bla bla bla bla
bla bla bla bla bla bla bla bla bla bla
  [11.11.2010 17:04:21] bla bla bla bla bla
  [11.11.2010 17:05:25] bla bla bla

Into:

  [11.11.2010 17:01:37] bla bla bla bla bla bla bla bla bla bla bla
    bla bla bla bla bla bla bla bla bla bla
  [11.11.2010 17:04:21] bla bla bla bla bla bla bla bla bla
  [11.11.2010 17:05:25] bla bla bla

Or:

  [11.11.2010 17:01:37] bla bla bla bla bla bla bla bla bla bla bla
                        bla bla bla bla bla bla bla bla bla bla
  [11.11.2010 17:04:21] bla bla bla bla bla bla bla bla bla
  [11.11.2010 17:05:25] bla bla bla

Any simple solution?