diff --git a/init-repo-tools b/init-repo-tools
new file mode 100755
index 0000000..062a345
--- /dev/null
+++ b/init-repo-tools
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+#
+# Call this your shell config, e.g. ~/.zshrc, and eval the results, e.g.:
+#
+#   eval "$(/path/to/this/repo/init-repo-tools)"
+#
+# Bash scripts can't change the working directory of their callers. This is
+# right and proper, but changing working directory is `repo`'s entire purpose,
+# so we need to work around that restriction.
+#
+cat <<-EOS
+repo () {
+    cd \$($(dirname $(realpath ${BASH_SOURCE[0]}))/repo \$@)
+}
+EOS
diff --git a/init.bash b/init.bash
deleted file mode 100644
index 9bc46e2..0000000
--- a/init.bash
+++ /dev/null
@@ -1,6 +0,0 @@
-# Source this into your shell config, e.g. ~/.zshrc
-
-# Bash scripts can't change the working directory of their callers. This is
-# right and proper, but we need to work around it in this case.
-#
-repo () { cd $($(dirname ${BASH_SOURCE[0]})/repo $@) }