fix bash installation for bash 3.2

Author: ABevier

README.md

@@ -3,7 +3,7 @@
 * [`install.sh`](./install.sh) is delivered when you `curl tea.xyz`.
 * This repository also provides the `tea` GitHub Action.
 
-# GitHub Action 0.15.1
+# GitHub Action 0.15.2
 
 ```yaml
 - uses: teaxyz/setup@v0

install.sh

@@ -420,6 +420,7 @@ check_shell_magic() {
 	bash)
 		__TEA_SH_FILE="$HOME/.bashrc"
 		__TEA_BTN_TXT="add one-liner to your \`~/.bashrc\`?"
+		__TEA_ONE_LINER="test -d \"$TEA_DESTDIR_WRITABLE\" && source /dev/stdin <<<\"\$(\"$TEA_DESTDIR_WRITABLE/tea.xyz/v*/bin/tea\" --magic=$SHELL --silent)\""
 		;;
 	elvish)
 		__TEA_SH_FILE="$HOME/.config/elvish/rc.elv"