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elsif and else are uncuddled, no spaces on the inside of paretheses, and try to avoid one-liner conditionals that require braces. If braces are needed, use multiple lines. Open braces should appear on the same line of the condition, unless it's a multiple line condition. For example:

  if ($foo) {
     do_foo();
  }
  elsif ($bar_really_long_condition_that_lasts_longer_than_40_columns &&
         $foo_really_long_condition_that_lasts_longer_than_40_columns)
  {
     do_bar();
  }
  else {
     do_else();
  }

• (status of this guideline: proposed by DanielQuinlan. everyone happy with it?)
• (+1 – JustinMason)
  

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