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Package unloading. Index next-line, previous-line, forward-line.

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Dave Love 2003-10-06 16:46:25 +00:00
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lispref/tips.texi
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@ -210,7 +210,16 @@ off, and make it autoload (@pxref{Autoload}). Design the package so
that simply loading it has no visible effect---that should not enable
the feature.@footnote{Consider that the package may be loaded
arbitrarily by Custom for instance.} Users will request the feature by
invoking the command.
invoking the command, which will often be constructed as a minor mode.
@cindex unloading packages
If your package contains functions which do modify oridinary Emacs
behavior, for instance by adding functions to hooks, define a function
@code{@var{feature}-unload-hook} where @var{feature} is the name of
the feature the package provides. This function should undo any such
changes, e.g.@: by turning off a minor mode, when
@findex unload-feature
@code{unload-feature} is used.
@item
It is a bad idea to define aliases for the Emacs primitives. Use the
@ -248,6 +257,9 @@ will be 14 characters or less, which is short enough to fit on all kinds
of Unix systems.
@item
@findex next-line
@findex previous-line
@findex forward-line
Don't use @code{next-line} or @code{previous-line} in programs; nearly
always, @code{forward-line} is more convenient as well as more
predictable and robust. @xref{Text Lines}.