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  Note: the case command is obsolete and is supported only for backward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.

SEE ALSO
  if switch