From 436dcfa11731bbef6f1f10222b497944cc8e3c4e Mon Sep 17 00:00:00 2001
From: Jauhien Piatlicki <jauhien@gentoo.org>
Date: Tue, 19 Aug 2014 13:26:12 +0200
Subject: add unset action

---
 src/modules/rust.eselect | 46 ++++++++++++++++++++++++++++++++--------------
 1 file changed, 32 insertions(+), 14 deletions(-)

diff --git a/src/modules/rust.eselect b/src/modules/rust.eselect
index e334e9b..0734798 100644
--- a/src/modules/rust.eselect
+++ b/src/modules/rust.eselect
@@ -109,21 +109,9 @@ set_symlink() {
 	fi
 }
 
-# set the rust version
-
-set_version() {
-	local target=$1
-
-	if is_number "${target}"; then
-		local targets=( $(find_targets) )
-		target=${targets[target-1]}
-	fi
-
-	[[ -z ${target} || ! -x "${EROOT}/usr/bin/rustc-${target}" ]] \
-		&& die -q "Target \"$1\" doesn't appear to be valid!"
-
-	local datadir="${EROOT}/usr/share/rust-${target}"
+# unset the rust version
 
+unset_version() {
 	remove_symlink "${EROOT}"/usr/bin/rustc
 	remove_symlink "${EROOT}"/usr/bin/rustdoc
 	remove_symlink "${EROOT}/${SITELISP}"/rust-mode
@@ -138,10 +126,28 @@ set_version() {
 	remove_symlink "${EROOT}/${SITEVIM}/doc/rust.txt"
 
 	remove_symlink "${EROOT}/${SITEZSH}/_rust"
+}
+
+# set the rust version
+
+set_version() {
+	local target=$1
+
+	if is_number "${target}"; then
+		local targets=( $(find_targets) )
+		target=${targets[target-1]}
+	fi
+
+	[[ -z ${target} || ! -x "${EROOT}/usr/bin/rustc-${target}" ]] \
+		&& die -q "Target \"$1\" doesn't appear to be valid!"
+
+	unset_version
 
 	ln -s "${EROOT}/usr/bin/rustc-${target}" "${EROOT}/usr/bin/rustc" || die -q "rustc symlink setting failed"
 	ln -s "${EROOT}/usr/bin/rustdoc-${target}" "${EROOT}/usr/bin/rustdoc" || die -q "rustdoc symlink setting failed"
 
+	local datadir="${EROOT}/usr/share/rust-${target}"
+
 	set_symlink "${datadir}/emacs/site-lisp/rust-mode" "${EROOT}/${SITELISP}/rust-mode" && \
 		set_symlink "${datadir}/emacs/site-lisp/site-gentoo.d/50rust-mode-gentoo.el" \
 		"${EROOT}/${SITELISP}/site-gentoo.d/50rust-mode-gentoo.el" && \
@@ -232,3 +238,15 @@ do_update() {
 	local targets=( $(find_targets) )
 	do_set ${#targets[@]}
 }
+
+### unset action ###
+
+describe_unset() {
+	echo "Unset active rust version"
+}
+
+do_unset() {
+    [[ $# -gt 0 ]] && die -q "Too many parameters"
+
+	unset_version || die -q "Couldn't unset active version"
+}
-- 
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