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start-cosmic: handle ANSI-C quoted strings returned by systemd #183

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start-cosmic: handle ANSI-C quoted strings returned by systemd #183

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4275214
Use mapfile to read environment variables
twouters Jan 28, 2026
a823516
start-cosmic: handle ANSI-C quoted strings returned by systemd
thefossguy Jan 30, 2026
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25 changes: 16 additions & 9 deletions data/start-cosmic
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Original file line number Diff line number Diff line change
Expand Up @@ -67,18 +67,25 @@ if command -v systemctl >/dev/null; then
# For environment variables already imported into the user's
# session, if the value imported differs from the value in this
# environment, update it.
existing_env_vars=( $(systemctl --user show-environment | tr '\n' ' ') )
mapfile -t existing_env_vars < <(systemctl --user show-environment)
for env_var in "${existing_env_vars[@]}"; do
env_var_name="$(echo "${env_var}" | awk -F '=' '{print $1}')"
env_var_val_str_to_compare="${env_var_name}=${!env_var_name:-}"
env_var_name="${env_var%%=*}"
env_var_value=${!env_var_name:-}

if [[ "${env_var}" != "${env_var_val_str_to_compare}" ]]; then
# Update only if the value in current environment is non-empty
env_var_unassigned_str="${env_var_name}="
if [[ "${env_var_val_str_to_compare}" != "${env_var_unassigned_str}" ]]; then
systemctl --user import-environment "${env_var_name}" ||:
fi
# Skip current iteration if the environment variable's value
# in the current envionment is unset.
if [[ -z "${env_var_value}" ]]; then
continue
fi

env_var_val_str_to_compare="${env_var_name}=${env_var_value}"
env_var_val_str_to_compare_ansi_c_quoted="${env_var_name}=\$'$(printf '%q' "${env_var_value}")'"
if [[ "${env_var}" == "${env_var_val_str_to_compare}" ]]; then
continue
elif [[ "${env_var}" == "${env_var_val_str_to_compare_ansi_c_quoted}" ]]; then
continue
fi
systemctl --user import-environment "${env_var_name}" ||:
done
fi

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