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update shell/README

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Denys Vlasenko 2010-05-20 12:56:14 +02:00
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commit 131ed3bcc9
1 changed files with 3 additions and 3 deletions
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shell/README
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@ -34,7 +34,7 @@ Shell Command Language
It says that shell must implement special built-ins. Special built-ins
differ from regular ones by the fact that variable assignments
done on special builtin is *PRESERVED*. That is,
done on special builtin are *PRESERVED*. That is,
VAR=VAL special_builtin; echo $VAR
@ -43,7 +43,7 @@ should print VAL.
(Another distinction is that an error in special built-in should
abort the shell, but this is not such a critical difference,
and moreover, at least bash's "set" does not follow this rule,
which is even codified in autoconf now...).
which is even codified in autoconf configure logic now...)
List of special builtins:
@ -73,7 +73,7 @@ unset [-fv] name...
In practice, no one uses this obscure feature - none of these builtins
gives any special reasons to play such dirty tricks.
However. This section says that *function invocation* should act
However. This section also says that *function invocation* should act
similar to special built-in. That is, variable assignments
done on function invocation should be preserved after function invocation.