update automake

Author: desertstsung

tools/completions/Makefile.am

@@ -1,7 +1,8 @@
-PREFIX=/usr/share
+PREFIX=${datadir}
 EXTRA_DIST = \
 	fish-completion.fish \
-	zsh-completion.zsh
+	zsh-completion.zsh \
+	bash-completion.sh
 
 .PHONY: install-zsh-completion
 install-zsh-completion:
@@ -10,3 +11,7 @@ install-zsh-completion:
 .PHONY: install-fish-completion
 install-fish-completion:
 	install -Dm644 fish-completion.fish $(PREFIX)/fish/vendor_completions.d/chafa.fish
+
+.PHONY: install-bash-completion
+install-bash-completion:
+	install -Dm644 bash-completion.sh $(PREFIX)/bash-completion/completions/chafa