case - Evaluate one of several scripts, depending on a given value
case string ?in? patList body ?patList body ...?
case string ?in? {patList body ?patList body ...?}
case(1t) Tcl Built-In Commands case(1t)
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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 ...?}
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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Note: the case command is obsolete and is supported only for backward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 argu-
ments are in braces in the second form, no command or variable substi-
tutions are performed on them; this makes the behavior of the second
form different than the first form in some cases.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/tcl-8 |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
switch(n)
KEYWORDS
case, match, regular expression
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from http://prdownloads.sourceforge.net/tcl/tcl-
core8.6.7-src.tar.gz.
Further information about this software can be found on the open source
community website at https://www.tcl.tk/.
Tcl 7.0 case(1t)