svn commit: r218344 - stable/8/bin/sh
jilles at FreeBSD.org
Sat Feb 5 21:02:13 UTC 2011
Date: Sat Feb 5 21:02:13 2011
New Revision: 218344
MFC r216630: Explain why it is a bad idea to use aliases in scripts.
stable/8/bin/sh/ (props changed)
--- stable/8/bin/sh/sh.1 Sat Feb 5 21:00:35 2011 (r218343)
+++ stable/8/bin/sh/sh.1 Sat Feb 5 21:02:13 2011 (r218344)
@@ -462,9 +462,10 @@ would become
Aliases provide a convenient way for naive users to
create shorthands for commands without having to learn how
to create functions with arguments.
-They can also be
-used to create lexically obscure code.
-This use is discouraged.
+Using aliases in scripts is discouraged
+because the command that defines them must be executed
+before the code that uses them is parsed.
+This is fragile and not portable.
An alias name may be escaped in a command line, so that it is not
replaced by its alias value, by using quoting characters within or
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