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11 changes: 11 additions & 0 deletions meta/recipes-core/systemd/systemd-systemctl/systemctl
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ locations = list()

class SystemdFile():
"""Class representing a single systemd configuration file"""

_clearable_keys = ['WantedBy']

def __init__(self, root, path, instance_unit_name):
self.sections = dict()
self._parse(root, path)
Expand Down Expand Up @@ -80,6 +83,14 @@ class SystemdFile():
v = m.group('value')
if k not in section:
section[k] = list()

# If we come across a "key=" line for a "clearable key", then
# forget all preceding assignments. This works because we are
# processing files in correct parse order.
if k in self._clearable_keys and not v:
del section[k]
continue

section[k].extend(v.split())

def get(self, section, prop):
Expand Down