Introduce a new macro (%p) representing the parent value of a given key

1 files changed, 6 insertions, 0 deletions

diff --git a/src/etoolkit/etoolkit.py b/src/etoolkit/etoolkit.py
index d8221a5..9b95a73 100755
--- a/src/etoolkit/etoolkit.py
+++ b/src/etoolkit/etoolkit.py
@@ -342,6 +342,12 @@ class EtoolkitInstance:
             if not value:
                 # perhaps unset instead of skipping?
                 continue
+            if isinstance(value, str) and '%p' in value:
+                macros['%p'] = (
+                    self._parent.get_environ().get(key, '')
+                    if self._parent is not None
+                    else ''
+                )
             if isinstance(value, str) and value.startswith('enc-val$1$'):
                 value = self._decrypt_value(value)
             if isinstance(value, str) and value.endswith(':'):