new file mode 100755
--- /dev/null
+++ b/.lib/stubs/asciidoctor
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+install_it() {
+ [ -w "$(gem env gemdir)" ] ||
+ opt="--user-install"
+
+ gem install -q ${opt:-} asciidoctor
+ asdf reshim ruby || :
+}
+
+. ~/.lib/sh/stubexec.sh
new file mode 100755
--- /dev/null
+++ b/.lib/stubs/timetrap
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+install_it() {
+ [ -w "$(gem env gemdir)" ] ||
+ opt="--user-install"
+
+ gem install -q ${opt:-} timetrap
+ asdf reshim ruby || :
+}
+
+. ~/.lib/sh/stubexec.sh