diff --git a/.github/sh/library/variables.inc.sh b/.github/sh/library/variables.inc.sh
new file mode 100644
index 00000000..a5ac4ce0
--- /dev/null
+++ b/.github/sh/library/variables.inc.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env sh
+
+# For setting single line variables in the environment or output
+set_sl_var() { local f='%s=%s\n' ; printf -- "${f}" "$@" ; } ;
+
+# Used together to set multiple line variables in the environment or output
+mk_delim() { printf -- '"%s_EOF_%d_"' "$1" "${RANDOM}" ; } ;
+open_ml_var() { local f=''\%'s<<'\%'s\n' ; printf -- "${f}" "$2" "$1" ; } ;
+close_ml_var() { local f='%s\n' ; printf -- "${f}" "$1" ; } ;
+