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[PATCH] make OLDPWD influence 'cd -'



I found OLDPWD's value doesn't influence 'cd -' if changed before run,
like what bash will do:
[hpt@hpt]~% echo $OLDPWD
/home/hpt
[hpt@hpt]~% vared OLDPWD
/tmp
[hpt@hpt]~% echo $OLDPWD
/tmp
[hpt@hpt]~% cd -
~
[hpt@hpt]~% pwd
/home/hpt

This patch will let zsh check OLDPWD before run 'cd -', so let OLDPWD
influence it:
[hpt@hpt]~% echo $OLDPWD
/home/hpt
[hpt@hpt]~% vared OLDPWD
/tmp
[hpt@hpt]~% cd -
/tmp
[hpt@hpt]/tmp% pwd
/tmp
[hpt@hpt]/tmp%



Attachment: 0001-make-OLDPWD-settable.patch
Description: Binary data



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