bashrc: Added an autosource function that allows us to source other files similar to how you would import python modules

.bash_functions/bool_eval.sh

@@ -0,0 +1,28 @@
+# Basic safe boolean evaluation. See this Gist for details:
+# https://gist.github.com/gliech/184dc7566821442202f21dfe15e2b7ff
+function truthy {
+  if [[ "${1,,}" == @(y|yes|on|true|1) ]]; then
+    return 0
+  fi
+  return 1
+}
+
+function falsy {
+  if [[ "${1,,}" == @(n|no|off|false|0) ]]; then
+    return 0
+  fi
+  return 1
+}
+
+function true_false_default {
+  case "${1,,}" in
+    y | yes | on | true | 1)
+      return 0 ;;
+    n | no | off | false | 0)
+      return 1 ;;
+  esac
+  shift
+  eval "$@"
+  return 1
+}
+