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add support for rbenv shell -

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`rbenv shell -` allows you to switch to the previously activated ruby
version.  Similar to `cd -` or `git checkout -`.

This tries to implement `rbenv shell -` as proposed in #854.  However,
adding support seemed to break the "shell change version" test.  I'm not
very good at Bash programming, can someone tell me what is wrong with
what I'm doing?  I'd like to add a bit more functionality to this, but
I'm really just cargo cult programming Bash.

Thank you!

fix tests
This commit is contained in:
Aaron Patterson
2016-01-12 11:03:50 -08:00
parent c38833179b
commit 6a912bf104
2 changed files with 87 additions and 11 deletions
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41
libexec/rbenv-sh-shell
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@@ -39,25 +39,50 @@ fi
if [ "$version" = "--unset" ]; then
case "$shell" in
fish )
echo "set -e OLD_RBENV_VERSION"
echo "set -e RBENV_VERSION"
;;
* )
echo "unset OLD_RBENV_VERSION"
echo "unset RBENV_VERSION"
;;
esac
exit
fi
if [ "$version" = "-" ]; then
if [ -z "$OLD_RBENV_VERSION" ]; then
echo "rbenv: OLD_RBENV_VERSION not set" >&2
exit 1;
fi
case "$shell" in
fish )
rbenv_version=$RBENV_VERSION
echo "set -e OLD_RBENV_VERSION \"$rbenv_version\""
echo "set -e RBENV_VERSION \"$OLD_RBENV_VERSION\""
;;
* )
rbenv_version=$RBENV_VERSION
echo "export OLD_RBENV_VERSION=\"$rbenv_version\""
echo "export RBENV_VERSION=\"$OLD_RBENV_VERSION\""
;;
esac
exit
fi
# Make sure the specified version is installed.
if rbenv-prefix "$version" >/dev/null; then
case "$shell" in
fish )
echo "setenv RBENV_VERSION \"${version}\""
;;
* )
echo "export RBENV_VERSION=\"${version}\""
;;
esac
if [ "$version" != "$RBENV_VERSION" ]; then
case "$shell" in
fish )
echo "setenv RBENV_VERSION \"${version}\""
;;
* )
echo "export OLD_RBENV_VERSION=\"$RBENV_VERSION\""
echo "export RBENV_VERSION=\"${version}\""
;;
esac
fi
else
echo "false"
exit 1