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Documentation updates from Beni Cherniavsky

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axel
2006-09-20 00:52:03 +10:00
parent 81d61c467b
commit 7a5823fd60
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doc_src/switch.txt
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@@ -1,8 +1,7 @@
\section switch switch - conditionally execute a block of commands
\subsection switch-synopsis Synopsis
<tt>switch VALUE; [case [WILDCARD...]; [COMMANDS...];...] end</tt>
<tt>switch VALUE; [case [WILDCARD...]; [COMMANDS...]; ...] end</tt>
\subsection switch-description Description
@@ -22,12 +21,17 @@ Note that fish does not fall through on case statements. Though the
syntax may look a bit like C switch statements, it behaves more like
the case stamantes of traditional shells.
Also note that command substitutions in a case statement will be
evaluated even if it's body is not taken. This may seem
counterintuitive at first, but it is unavoidable, since it would be
impossible to know if a case command will evaluate to true before all
forms of parameter expansion have been performed for the case command.
\subsection switch-example Example
If the variable \$animal contains the name of an animal, the
following code would attempt to classify it:
If the variable \$animal contains the name of an animal, the following
code would attempt to classify it:
<p>
<pre>
switch $animal
case cat
@@ -42,10 +46,7 @@ switch $animal
echo I have no idea what a $animal is
end
</pre>
</p>
<p>
If the above code was run with \c \$animal set to \c whale, the output
would be \c mammal.
</p>