The number of existing Gradle properties is already in the double digits. More properties will be added in the future.
Although properties offer the benefit of precise user-side control and support gradual evolution practices, the high number of properties also presents challenges.

The main challenge on the user side is comprehensibility.

# Properties used to build to the RPM package
#

# Environment file
packaging.env.file=/etc/sysconfig/fess

# Default configuration directory and file to use in bin/plugin script

# Simple marker to check that properties are correctly overridden
packaging.type=rpm

# Custom header for package scripts
packaging.scripts.header=

# Properties used to build to the DEB package
#

# Environment file
packaging.env.file=/etc/default/fess

# Simple marker to check that properties are correctly overridden
packaging.type=deb

# Custom header for package scripts
packaging.scripts.header=#!/bin/sh${line.separator}set -e

labels.system_info_configuration=System Info
labels.system_info_env_title=Environment Variable Properties
labels.system_info_prop_title=System Properties
labels.system_info_fess_prop_title=App Properties
labels.system_info_bug_report_title=Bug Report Properties
labels.system_info_system_properties_does_not_exist=system.properties does not exist. Default values are applied.
labels.file_auth_configuration=File Authentication

# _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
# Lasta Di properties, you can set container's options
# _/_/_/_/_/_/_/_/_/_/

# location of smart-deploy mode e.g. maihama_env.properties: lasta_di.smart.deploy.mode
smart.deploy.mode.location = fess_env.properties: lasta_di.smart.deploy.mode

# package for smart deploy target e.g. org.docksidestage.app
smart.package1 = org.codelibs.fess.app

# script engine

labels.system_info_configuration=System Info
labels.system_info_env_title=Environment Variable Properties
labels.system_info_prop_title=System Properties
labels.system_info_fess_prop_title=App Properties
labels.system_info_bug_report_title=Bug Report Properties
labels.system_info_system_properties_does_not_exist=system.properties does not exist. Default values are applied.
labels.file_auth_configuration=File Authentication

# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

#
# Maven user properties
#
# The properties defined in this file will be made available through
# user properties at the very beginning of Maven's boot process.
#
maven.property = yes it is

maven.installation.conf = ${maven.home}/conf
maven.user.conf         = ${user.home}/.m2

app.cipher.algorithm=aes
# Secret key for encryption (change this value for production).
app.cipher.key=___change__me___
# Algorithm for digest calculation.
app.digest.algorithm=sha256
# Regex pattern for properties to encrypt.
app.encrypt.property.pattern=.*password|.*key|.*token|.*secret
# Regex pattern for sensitive values to mask in debug logs (case-insensitive match against property/env keys).

# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

#
# Maven user properties
#
# The properties defined in this file will be made available through
# user properties at the very beginning of Maven's boot process.
#

# Comma-separated list of files to include.

# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

#
# Maven system properties
#
# The properties defined in this file will be made available through
# system properties at the very beginning of Maven's boot process.
#

maven.installation.conf = ${maven.home}/conf
maven.user.conf         = ${user.home}/.m2