case man page on IRIX

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     case(n)			 Tcl (7.0)		       case(n)

     _________________________________________________________________

     NAME
	  case - Evaluate one of several scripts, depending on a given
	  value

     SYNOPSIS
	  case string ?in? patList body ?patList body ...?

	  case string ?in? {patList body ?patList body ...?}
     _________________________________________________________________

     DESCRIPTION
	  Note: the case command is obsolete and is supported only for
	  backward compatibility.  At some point in the future it may
	  be removed entirely.	You should use the switch command
	  instead.

	  The case command matches string against each of the patList
	  arguments in order.  Each patList argument is a list of one
	  or more patterns.  If any of these patterns matches string
	  then case evaluates the following body argument by passing
	  it recursively to the Tcl interpreter and returns the result
	  of that evaluation.  Each patList argument consists of a
	  single pattern or list of patterns.  Each pattern may
	  contain any of the wild-cards described under string match.
	  If a patList argument is default, the corresponding body
	  will be evaluated if no patList matches string.  If no
	  patList argument matches string and no default is given,
	  then the case command returns an empty string.

	  Two syntaxes are provided for the patList and body
	  arguments.  The first uses a separate argument for each of
	  the patterns and commands; this form is convenient if
	  substitutions are desired on some of the patterns or
	  commands.  The second form places all of the patterns and
	  commands together into a single argument; the argument must
	  have proper list structure, with the elements of the list
	  being the patterns and commands.  The second form makes it
	  easy to construct multi-line case commands, since the braces
	  around the whole list make it unnecessary to include a
	  backslash at the end of each line.  Since the patList
	  arguments are in braces in the second form, no command or
	  variable substitutions are performed on them;	 this makes
	  the behavior of the second form different than the first
	  form in some cases.

     KEYWORDS
	  case, match, regular expression

     Page 1					     (printed 2/19/99)

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